【Test Your Knowledge】Basic Chemical Engineering Knowledge (30)
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1 horsepower = _________ watts = ___________ kilogram-meters per second. 2. The compressor is usually connected with ______________ at its outlet; this allows ___________ in the exhaust pipe, and it also helps to remove ____________ from the gas. 3. There are two methods for adjusting the flow rate of a centrifugal pump, namely ___________________ and ____________________. 4. When the reboiler is in operation, the __________ valve should be opened first to remove ________, and then the __________ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that ______________ are all ____________________. 6. A ____________ should be installed at the suction inlet of the compressor, in order to prevent ________________ in the gas from causing wear and scratches on ________. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the series code for ___________, 45 represents ___________, and 4 represents ____________. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the tube side should be arranged as ___________, while the shell side should be _________. 9. In the multi-effect evaporation process, parallel feeding refers to the _____________ and _______________________ of each effect. 10. The main approaches to energy conservation in the chemical industry are: ________, _______, and _______. Answer key: 1. 735, 75 2. A buffer tank – to stabilize the gas flow rate and to allow water and oil to settle and separate. 3. To change the characteristics of the piping system as well as those of the centrifugal pump. 4. Condensate discharge, water accumulation, steam inlet. 5. The solution and steam flow from the first stage to the subsequent stages. 6. Filters – to remove dust, iron filings, etc.; cylinders. 7. Multi-stage pump – the head provided by each stage, the number of stages in the pump. 8. Hot fluid, cold fluid. 9. Raw liquid is added in, while the concentrated liquid is discharged. 10. Rational use of energy, safe use of energy, full utilization of energy. Last edited by zhangyong6404 on 2009-4-13 at 16:30.]
1 horsepower = __735_______ watts = _____75______ kilogram-meters per second. 2. Compressors usually have a __bypass_____________ connected at the outlet; this allows _____________ in the exhaust pipe, and it also helps to remove ____________ from the gas. 3. There are two methods for adjusting the flow rate of a centrifugal pump: ____adjusting the opening degree of the outlet valve_______ and _____adjusting the speed_____ . 4. When the reboiler is in operation, the ___vent___ valve should be opened first to remove _non-condensable gases_, and then the ___drain___ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the __solution and steam__ flow ___in the same direction__. 6. A __filter__ should be installed at the suction inlet of the compressor, in order to prevent particles present in the gas from entering the lower cylinders, thereby avoiding wear and damage to those cylinders. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the _________ series code, 45 represents _________, and 4 represents the __number of impeller stages__. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the _tube side__, while the cold fluid should flow through the _shell side__. 9. In the multi-effect evaporation process, parallel feeding refers to the addition of the feed solution and steam to each effect separately. 10. The main approaches to energy conservation in the chemical industry are: _insulation__, _recycling_, and _______.
1. 1 horsepower = ___735______ watts = ______75_____ kilogram-meters per second. 2. Compressors are usually connected to a ____buffer tank____ at the outlet; this helps to keep the ___flow rate in the exhaust pipe stable__ and also enables the __oil and water in the gas to settle and separate__. 3. There are two methods for adjusting the flow rate of a centrifugal pump: ______ changing the pipeline characteristic curve _____ and ______ altering the pump’s characteristic curve ___. 4. When the reboiler is in operation, the __cooling water discharge__ valve should be opened first to remove any _accumulated water_, and then the ___air intake__ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the ____solution and steam__ flow ____from the first effect to the last effect__. 6. A _filter_ should be installed at the suction inlet of the compressor, in order to prevent _solid particles_ in the gas from causing wear and scratches on the _cylinders_. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the series code for __multi-stage pumps__, 45 denotes the __head per stage__, and 4 indicates the __number of stages in the pump__. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the tube side, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, parallel feeding refers to the __addition of feed liquid__ and the __removal of concentrated liquid__ in each effect. 10. The main approaches to energy conservation in the chemical industry are: _rational use of energy_, _safe use of energy_, and _full utilization of energy_.
1 horsepower = _735________ watts = ___75________ kilogram-meters per second. 2. Compressors are usually connected to a ____buffer tank___________ at their outlet; this helps to keep the __flow rate in the exhaust pipe stable___________, and it also facilitates the ___separation of oil and water from the gas_________. 3. There are two methods for adjusting the flow rate of a centrifugal pump: __changing the pump’s characteristic curve___________________ and ___adjusting the pipeline’s characteristic curve_________________. 4. When the reboiler is in operation, the _____vent valve_________ should be opened first to remove __non-condensable gases__, and then the ___drain_______ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the feed liquid and steam __________ are ______ transferred from the first effect to the last effect ________________. 6. A __filter__________ should be installed at the suction inlet of the compressor, in order to prevent __solid particles__________________ in the gas from causing wear and scratches on the __cylinders_________. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the series code for ___multi-stage pumps________, 45 denotes the ____head_______, and 4 indicates the number of stages _________. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the ______ tube side_________, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, parallel feeding refers to the ____________ of the feed liquid in each effect and the ________ of steam in each effect. 10. The main approaches to energy conservation in the chemical industry are: ___rational use of energy___, safe use of energy _______, and ____full utilization of energy___.
1. 1 horsepower = ___735______ watts = ______75_____ kilogram-meters per second. 2. Compressors are usually connected to a ____buffer tank____ at the outlet; this helps to keep the ___flow rate in the exhaust pipe stable__ and also enables the __oil and water in the gas to settle and separate__. 3. There are two methods for adjusting the flow rate of a centrifugal pump: ______ changing the pipeline characteristic curve _____ and ______ altering the pump’s characteristic curve ___. 4. When the reboiler is in operation, the __cooling water discharge__ valve should be opened first to remove any _accumulated water_, and then the ___air intake__ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the ____solution and steam__ flow ____from the first effect to the last effect__. 6. A _filter_ should be installed at the suction inlet of the compressor, in order to prevent __solid impurities__ in the gas from causing wear and scratches on the ___cylinders__. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the series code for __multi-stage pumps__, 45 denotes the __head per stage__, and 4 indicates the __number of stages in the pump__. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the tube side, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, parallel feeding refers to the __addition of feed liquid__ and the __removal of concentrated liquid__ in each effect. 10. The main approaches to energy conservation in the chemical industry are: _rational use of energy_, _safe use of energy_, and _full utilization of energy_.
1 horsepower = 735 watts = 75 kg·m/second. 2. A buffer tank is usually connected to the outlet of the compressor; this helps to stabilize the __flow rate in the exhaust pipe, and it also aids in separating ___oil and water from the gas. 3. There are two methods for adjusting the flow rate of a centrifugal pump: changing the pump’s characteristic curve ____ and the ___ pipeline characteristic curve. 4. When the reboiler is in operation, the _____ vent valve should be opened first to remove any __ non-condensable gases, and then the ___ drain valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the feed liquid and steam ______ flow from the first effect to the last effect. 6. A __filter should be installed at the suction inlet of the compressor, in order to prevent __solid particles__ in the gas from causing wear and scratches on the __cylinders__. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the code for the ___ multi-stage pump series, 45 denotes the ____ head, and 4 indicates the number of stages in the pump. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the tube side, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, parallel feeding refers to the _____ and ____ of the feed liquid in each effect with heating steam. 10. The main approaches to energy conservation in the chemical industry include: ___rational use of energy___, safe use of energy _______, and ____full utilization of energy_____.
1. 1 horsepower = ___735______ watts = ______75_____ kilogram-meters per second. 2. Compressors are usually connected to a ____buffer tank____ at the outlet; this helps to keep the ___flow rate in the exhaust pipe stable__ and also enables the __oil and water in the gas to settle and separate__. 3. There are two methods for adjusting the flow rate of a centrifugal pump: ______ changing the pipeline characteristic curve _____ and ______ altering the pump’s characteristic curve ___. 4. When the reboiler is in operation, the __cooling water discharge__ valve should be opened first to remove any _accumulated water_, and then the ___air intake__ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the ____solution and steam__ flow ____from the first effect to the last effect__. 6. A _filter_ should be installed at the suction inlet of the compressor, in order to prevent _solid particles_ in the gas from causing wear and scratches on the _cylinders_. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the series code for __multi-stage pumps__, 45 denotes the __head per stage__, and 4 indicates the __number of stages in the pump__. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the tube side, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, parallel feeding refers to the __addition of feed liquid__ and the __removal of concentrated liquid__ in each effect. 10. The main approaches to energy conservation in the chemical industry are: _rational use of energy_, _safe use of energy_, and _full utilization of energy_.
1 horsepower = _735________ watts = ___75________ kilogram-meters per second. 2. The compressor is usually connected to an _expansion tank_____________ at its outlet; this allows for the _buffering of gases__ in the exhaust pipe, as well as aiding in the _separation of liquids__ from the gases. 3. There are two methods for adjusting the flow rate of a centrifugal pump: __adjusting the outlet valve___________________ and ____________________. 4. When the reboiler is in operation, the _exit________ valve should be opened first to remove the condensate________, and then the __entry________ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that _ each evaporator_________________ is equipped with a ____feeder______________________. 6. An __expansion tube__________ should be installed at the suction inlet of the compressor, in order to prevent _excessive flow velocity____________________ in the gas from causing wear and damage to the __impeller_________. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the __number of stages_________ and the series code; 45 represents the __impeller diameter_________, while 4 denotes the ___number of stages_________. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the cold fluid should flow through the tube side, while the hot fluid should flow through the shell side. 9. In the multi-effect evaporation process, cross-flow feeding refers to the __addition of raw material___________ in each effect and the ___removal of product__________________ from it. 10. The main approaches to energy conservation in the chemical industry are: _improving energy efficiency_______, _reducing waste______ , and _recovering energy_______.
1 horsepower = __735 watts = _75_ kilogram-meters per second. 2. A _buffer tank_ is usually connected to the outlet of the compressor; this helps to maintain a _stable gas pressure_ in the exhaust pipe and also facilitates the _separation of liquids_ from the gas. 3. There are two methods for adjusting the flow rate of a centrifugal pump: __adjusting the opening degree of the outlet valve__ and __adjusting the speed of the pump__. 4. When the reboiler is in operation, the ___exit_ valve should be opened first to remove __remaining gas_, and then the __inlet_ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the material and steam __are fed from the first effect to the last effect__. 6. A _filter_ should be installed at the suction inlet of the compressor, in order to prevent __impurities__ present in the gas from causing wear and scratches on the _cylinders_ as a result of gas compression. 7. The nameplate of a certain pump indicates 100D45×4, where D denotes the series code for _multi-stage pumps_, 45 represents the _single-stage head_, and 4 indicates _four stages_. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the tube side, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, parallel feeding refers to the fact that in each effect, the flow direction of the material and the steam is the same. 10. The main approaches to energy conservation in the chemical industry are: _equipment_, __technology_, and __recycling_.
1. 735.499 watts； 75 kilograms per meter per second. 2. Buffer tank ； Gas flow rate is stable ； The entrained oil bubbles and water bubbles are separated. 3. The characteristic curve of the pipeline is altered ； Change the pump’s characteristic curve 4. Bleed valve ； non-condensable gas ； Steam trap. 5. Raw material liquid and steam ； It is added to the first effect, flows sequentially through the subsequent effects, and the finished product is obtained from the last effect. 6. Filter ； Inhaling dust, iron shavings, etc ； Pistons, cylinders, etc. 7. Multi-stage pumps ； Head per stage ； Series number: 4 8, thermal fluid ； Cold fluid 9, feed to the raw material liquid ； Release the finished solution 10. Make rational use of energy ； Safe energy use ； Full utilization of energy
1 735, 75 2 Buffer tanks; stabilization of gas flow rate; separation of oil and water bubbles entrained in the gas 3 Modification of the characteristic curves of the pipelines and pumps 4 Venting, non-condensable gases, water separation 5 Materials and steam, from the first stage to the last stage 6 Filters; particles carried in reach the lower cylinders 7 Multi-stage pumps; head per stage, with 4 stages in total 8 Hot fluids, cold fluids 9 Addition of raw liquid and steam respectively 10 Rational use of energy； Safe energy use ； Full utilization of energy
735, 752: Buffer tanks; stabilization of gas flow rate; separation of oil and water bubbles carried along with the gas. 3: Modification of the characteristic curves of the pipelines and pumps. 4: Venting, removal of non-condensable gases, and drainage of water. 5: Transfer of materials and steam from the first stage to the last stage. 6: Filters; particles passed through them enter the subsequent cylinders. 7: Multi-stage pumps; head per stage, with a total of 4 stages. 8: Hot fluids, cold fluids. 9: Addition of raw liquid and steam respectively. 10: Rational use of energy； Safe energy use ； Full utilization of energy
1. 735, 75; 2. Buffer tank, stable gas flow rate, separation of oil and water bubbles entrained in the gas; 3. Modification of the pipeline’s characteristic curve, as well as the pump’s characteristic curve; 4. Vent valve, non-condensable gases, steam trap; 5. Feed liquid and steam are introduced into the first stage, flow sequentially through the subsequent stages, and the finished product is obtained from the last stage; 6. Filter, used to remove dust, iron shavings, etc.; piston, cylinder, etc.; 7. Multi-stage pump, with a head per stage, and a total of 4 stages; 8. Hot fluid, cold fluid; 9. Feed liquid is introduced, and the finished product is discharged; 10. Rational use of energy, safe use of energy, full utilization of energy
1 735, 75 2 Buffer tanks; stable gas flow rate; separation of oil and water bubbles entrained in the gas 3 Adjusting the opening of the outlet valve; adjusting the speed of the pump 4 Venting, non-condensable gases, and condensate 5 Materials and steam, from the first stage to the last stage 6 Filters; particles carried in enter the cylinders 7 Multi-stage pumps; head per stage, with 4 stages in total 8 Hot fluids, cold fluids 9 Adding the raw liquid and steam separately 10 Rational use of energy； Safe energy use ； Full utilization of energy
1 horsepower = 735 watts = 75 kg·m/second. 2. A buffer tank is usually connected to the outlet of the compressor; this helps to stabilize the __flow rate in the exhaust pipe, and it also aids in separating ___oil and water from the gas. 3. There are two methods for adjusting the flow rate of a centrifugal pump: changing the pump’s characteristic curve ____ and the ___ pipeline characteristic curve. 4. When the reboiler is in operation, the _____ vent valve should be opened first to remove any __ non-condensable gases, and then the ___ drain valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the feed liquid and steam ______ flow from the first effect to the last effect. 6. A __filter should be installed at the suction inlet of the compressor, in order to prevent __solid particles__ in the gas from causing wear and scratches on the __cylinders__. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the code for the ___ multi-stage pump series, 45 denotes the ____ head, and 4 indicates the number of stages in the pump. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the tube side, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, parallel feeding refers to the _____ and ____ of the feed liquid in each effect with heating steam. 10. The main approaches to energy conservation in the chemical industry include: ___rational use of energy___, safe use of energy _______, and ____full utilization of energy_____.
1 horsepower = (735) watts = (75) kg·m/second. 2. Compressors are usually connected to a _buffer tank_ at their outlet; this helps to maintain a stable gas flow rate in the exhaust pipe, and it also facilitates the separation of oil and water droplets contained in the gas, that is, oil-water separation. 3. There are two methods for adjusting the flow rate of a centrifugal pump, namely (adjusting the opening degree of the outlet valve) and (adjusting the speed of the pump). 4. When the reboiler is in operation, the vent valve should be opened first to remove non-condensable gases, and then the drain valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the material and steam flow (from the first effect to the last effect). 6. A (filter) should be installed at the suction inlet of the compressor to prevent (particles present in the gas) from entering the cylinder, thereby avoiding wear and scratches on the (cylinder). 7. The nameplate of a certain pump indicates 100D45×4, where D denotes the series code for (multi-stage pump), 45 represents the (single-stage head), and 4 indicates (four stages). 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the tube side, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, co-current feeding refers to the situation where the (material) and (steam) flow in the same direction. 10. The main approaches to energy conservation in the chemical industry are: (rational use of energy), (safe use of energy), and (full utilization of energy).
1. 735.499 watts； 75 kilograms per meter per second. 2. Buffer tank ； Gas flow rate is stable ； The entrained oil bubbles and water bubbles are separated. 3. The characteristic curve of the pipeline is altered ； Change the pump’s characteristic curve 4. Bleed valve ； non-condensable gas ； Steam trap. 5. Raw material liquid and steam ； It is added to the first effect, flows sequentially through the subsequent effects, and the finished product is obtained from the last effect. 6. Filter ； Inhaling dust, iron shavings, etc ； Pistons, cylinders, etc. 7. Multi-stage pumps ； Head per stage ； Series number: 4 8, thermal fluid ； Cold fluid 9, feed to the raw material liquid ； Release the finished solution 10. Make rational use of energy ； Safe energy use ； Full utilization of energy
1. 735.499 watts； 75 kilograms per meter per second. 2. Buffer tank ； Gas flow rate is stable ； The entrained oil bubbles and water bubbles are separated. 3. The characteristic curve of the pipeline is altered ； Change the pump’s characteristic curve 4. Bleed valve ； non-condensable gas ； Steam trap. 5. Raw material liquid and steam ； It is added to the first effect, flows sequentially through the subsequent effects, and the finished product is obtained from the last effect. 6. Filter ； Inhaling dust, iron shavings, etc ； Pistons, cylinders, etc. 7. Multi-stage pumps ； Head per stage ； Series number: 4 8, thermal fluid ； Cold fluid 9, feed to the raw material liquid ； Release the finished solution 10. Make rational use of energy ； Safe energy use ； Full utilization of energy
1 735, 75 2 Buffer tanks; stabilization of gas flow rate; separation of oil and water bubbles entrained in the gas 3 Modification of the characteristic curves of the pipelines and pumps 4 Venting, non-condensable gases, water separation 5 Materials and steam, from the first stage to the last stage 6 Filters; particles carried in reach the lower cylinders 7 Multi-stage pumps; head per stage, with 4 stages in total 8 Hot fluids, cold fluids 9 Addition of raw liquid and steam respectively 10 Rational use of energy； Safe energy use ； Full utilization of energy
1. 1 horsepower = ___735______ watts = ______75_____ kilogram-meters per second. 2. Compressors are usually connected to a ____separation buffer tank____ at their outlet; this helps to keep the ___gas flow rate stable__ in the exhaust pipe, and it also facilitates the __settling and separation of oil and water__ from the gas. 3. There are two methods for adjusting the flow rate of a centrifugal pump: ______ changing the pipeline characteristic curve _____ and ______ altering the pump’s characteristic curve ___. 4. When the reboiler is in operation, the __cooling water discharge__ valve should be opened first to remove any _accumulated water_, and then the ___air intake__ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the ____solution and steam__ flow ____from the first effect to the last effect__. 6. A _filter_ should be installed at the suction inlet of the compressor, in order to prevent _solid particles_ in the gas from causing wear and damage to the _impeller_. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the series code for __multi-stage horizontal centrifugal pumps__, 45 denotes the __head per stage__, and 4 indicates that there are __4 stages__ in total. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the tube side, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, parallel feeding refers to the __addition of feed liquid__ and the __removal of concentrated liquid__ in each effect. 10. The main approaches to energy conservation in the chemical industry are: _rational use of energy_, _safe use of energy_, and _full utilization of energy_.
1. 1 horsepower = ___735______ watts = ______75_____ kilogram-meters per second. 2. Compressors are usually connected to a ____buffer tank____ at the outlet; this helps to keep the ___flow rate in the exhaust pipe stable__ and also enables the __oil and water in the gas to settle and separate__. 3. There are two methods for adjusting the flow rate of a centrifugal pump: ______ changing the pipeline characteristic curve _____ and ______ altering the pump’s characteristic curve ___. 4. When the reboiler is in operation, the __cooling water discharge__ valve should be opened first to remove any _accumulated water_, and then the ___air intake__ valve should be opened. 5. In the multi-effect evaporation process, co-current feeding means that both the ____solution and steam__ flow ____from the first effect to the last effect__. 6. A _filter_ should be installed at the suction inlet of the compressor, in order to prevent __solid impurities__ in the gas from causing wear and scratches on the ___cylinders__. 7. The nameplate of a certain pump indicates 100D45×4, where D represents the series code for __multi-stage pumps__, 45 denotes the __head per stage__, and 4 indicates the __number of stages in the pump__. 8. The purpose of a certain heat exchanger is to heat a cold fluid; in order to reduce heat loss from the hot fluid, the hot fluid should flow through the tube side, while the cold fluid should flow through the shell side. 9. In the multi-effect evaporation process, parallel feeding refers to the __addition of feed liquid__ and the __removal of concentrated liquid__ in each effect. 10. The main approaches to energy conservation in the chemical industry are: _rational use of energy_, _safe use of energy_, and _full utilization of energy_.