[Soda ash knowledge] Daily question (169) 2010.3.31

advantage: 1. The process is simple and does not require auxiliary equipment such as separators, ammonia purification towers, vacuum machines, and air compressors. ； 2. Low power consumption, about 1 ton of soda ash 10KW.h electricity, while a vacuum filter requires approximately 15KW.h electricity ； 3. The moisture content of heavy alkali is low, generally below 12%, and the calcination process can * * Reduce energy consumption and even eliminate back-alkali and simplify process equipment. However, vacuum filtration heavy alkali has high moisture content, generally 14 to 20%. ； shortcoming: 1. The heavy alkali crystal particles are fine, and the centrifugal filter needs a specially made metal filter, otherwise the leakage will affect the output. 2. The automation and continuity are poor, while the vacuum filter is easy to produce automatically and continuously. 3. The production capacity of the unit equipment is small. A large centrifuge can produce 200t of soda ash per day, while a large vacuum filter can produce 400 to 600t of soda ash per day. 4. The loss of ammonia is large because there is no ammonia recovery device. 5. The loss of alkali is large. Due to the large centrifugal force, crystals easily pass through the medium. The general loss is about 2 to 3.5%, while the loss of the vacuum filter is about 1 to 2.5%.

1. Strict requirements for crystal particles 2. Easy to miss fine crystals 3. High salt content.

advantage: 1. The process is simple and does not require auxiliary equipment such as separators, ammonia purification towers, vacuum machines, and air compressors. ； 2. Low power consumption, about 1 ton of soda ash 10kw.h , while the vacuum filter requires approximately 15kw.h electricity ； 3. The moisture content of heavy alkali is low, generally below 12%, and the calcination process can * * Reduce energy consumption and even eliminate alkali return to simplify process equipment. However, vacuum filtration heavy alkali has high moisture content, generally 14%-20%. shortcoming: 1. The heavy alkali crystal particles are fine, and the centrifugal filter needs a specially made metal filter, otherwise the leakage will be large and the output will be affected. ； 2. The automation and continuous performance are poor, while the vacuum filter is easy to automate continuous production. ； 3. The production capacity of unit equipment is small. A large centrifuge can produce 200t of soda ash per day, while a large vacuum filter can produce 400-600t of soda ash per day. ； 4. Ammonia loss is large because there is no ammonia recovery device ； 5. The alkali loss is high. Due to the large centrifugal force, the crystals easily pass through the medium. The general loss is about 2.0%-3.5%, while the vacuum filter loss is about 1.0%-2.5%.

answer: 1. Advantages: 1. The process is simple and does not require auxiliary equipment such as separators, ammonia purification towers, vacuum machines, and air compressors. ； 2. Low power consumption, each ton of soda ash consumes about 10 kilowatt hours, while the vacuum filter consumes about 15 kilowatt hours of electricity per ton of soda ash. ； 3. The moisture content of heavy alkali is low, generally below 12%, and the calcining process can * * Reduce energy consumption and even eliminate alkali return to simplify process equipment. However, vacuum filtration heavy alkali has high moisture content, generally between 14 and 20%. 2. The disadvantage is: 1. The particles of heavy alkali crystals are fine, and the centrifugal filter needs a special metal filter, otherwise the leakage will be large and the output will be affected. ； 2. The continuity of automation is poor, while the vacuum filter is easy to automate continuous production. ； 3. The production capacity of the unit equipment is small. The large centrifuge can produce 200 tons of soda ash per day, while the large vacuum filter can produce 400~600 tons of soda ash per day. 4. Because there is no recycling equipment, the ammonia loss is large. ； 5. Ammonia loss is large. Due to the large centrifugal force, crystals easily pass through the medium. The general loss is about 2.5~3.0%, while the vacuum filter loss is about 10.~2.5%. 1# steinback

advantage: 1. The process is simple and does not require auxiliary equipment such as separators, ammonia purification towers, vacuum machines, and air compressors. ； 2. Low power consumption, about 10kwh per ton of soda ash, while the vacuum filter uses about 15kwh per ton of soda ash. ； 3. The moisture content of heavy alkali is low, generally below 12%, and the calcination process can * * Reduce energy consumption and even eliminate back-alkali to simplify process equipment. However, vacuum filtration heavy alkali has high moisture content, generally 14-20%. shortcoming: 1. The heavy alkali crystal particles are fine, and the centrifugal filter needs a specially made metal filter, otherwise the leakage will be large and the output will be affected. ； 2. Poor automation and continuity, while vacuum filters are easy to automate and produce continuously. ； 3. The production capacity of the unit equipment is small. The daily output of a large centrifuge is 200t of soda ash, while the daily output of a large vacuum filter can reach 400-600t of soda ash; 4. The loss of ammonia is large because there is no ammonia recovery device. ； 5. The alkali loss is high. Due to the large centrifugal force, the crystals easily pass through the medium. The general loss is about 2.0-3.5%, while the vacuum filter loss is about 1.0-2.5%.

Advantages: ① The process is simple and does not require auxiliary equipment such as separators, ammonia purification towers, vacuum machines, and air compressors; ② Low power consumption, about 10 kw·h per ton of soda ash, while the vacuum filter requires about 151 kw·h per ton of soda ash.； ③The moisture content of heavy alkali is low, generally below 12%, and the calcining process can * * Reduce energy consumption and even eliminate alkali return to simplify process equipment. However, vacuum filtration heavy alkali has high moisture content, generally 14%-20%. Disadvantages: ① The particles of heavy alkali crystals are fine, and the centrifugal filter needs a specially made metal filter, otherwise the amount of leakage will be large and the output will be affected. ； ②Automation and continuity are poor, while vacuum filters are prone to automated continuous production ； ③The production capacity of unit equipment is small. A large centrifuge can produce 200 t of soda ash per day, while a large vacuum filter can produce 400-600 t of soda ash per day. ； ④Ammonia loss is large because there is no ammonia recovery device ； ⑤The alkali loss is relatively large. Due to the large centrifugal force, the crystals easily pass through the medium. The general loss is about 2.0%-3.5%, while the vacuum filter loss is about 1.0%-2.5%.

Explain the advantages and disadvantages of centrifugal filter: Advantages: ① The process is simple and does not require auxiliary equipment such as separators, ammonia purification towers, vacuum machines, and air compressors; ② Low power consumption, about 10kW.h per ton of soda ash, while the vacuum wave filter requires about 15kW per ton of soda ash. h electricity; ③The moisture content of heavy alkali is low, generally below 12%, and the calcining process can * * Reduce energy consumption and even eliminate alkali return to simplify process equipment. However, vacuum filtration heavy alkali has high moisture content, generally 14%-20%. shortcoming: ①Heavy alkali crystals have fine particles, and the centrifugal filter requires a specially made metal filter, otherwise the leakage will be large and the output will be affected; ② Automation and continuity are poor, while the vacuum filter is easy to automate and produce continuously. ； ③The production capacity of unit equipment is small. A large centrifuge can produce 200t of soda ash per day, while a large vacuum filter can produce 400-600t of soda ash per day; ④ Ammonia loss is large because there is no ammonia recovery device ； ⑤The alkali loss is relatively large. Due to the large centrifugal force, the crystals easily pass through the medium. The general loss is about 2.0%-3.5%, while the vacuum filter loss is about 1.0%-2.5%.

advantage: 1. The process is simple and does not require auxiliary equipment such as separators, ammonia purification towers, vacuum machines, and air compressors. ； 2. Low power consumption, about 1 ton of soda ash 10KW.h electricity, while a vacuum filter requires approximately 15KW.h electricity ； 3. The moisture content of heavy alkali is low, generally below 12%, and the calcination process can * * Reduce energy consumption and even eliminate back-alkali and simplify process equipment. However, vacuum filtration heavy alkali has high moisture content, generally 14 to 20%. ； shortcoming: 1. The heavy alkali crystal particles are fine, and the centrifugal filter needs a specially made metal filter, otherwise the leakage will affect the output. 2. The automation and continuity are poor, while the vacuum filter is easy to produce automatically and continuously. 3. The production capacity of the unit equipment is small. A large centrifuge can produce 200t of soda ash per day, while a large vacuum filter can produce 400 to 600t of soda ash per day. 4. The loss of ammonia is large because there is no ammonia recovery device. 5. The loss of alkali is large. Due to the large centrifugal force, crystals easily pass through the medium. The general loss is about 2 to 3.5%, while the loss of the vacuum filter is about 1 to 2.5%.

Centrifugal filters are often used to separate suspensions containing a large amount of solids and larger particles. When the dirty liquid to be purified enters the high-speed rotating separator, due to the centrifugal force, the solid particles are trapped on the wall of the separator, while the clean liquid flows out from the top of the separator. 　　Centrifugal filters are mainly used for primary filtration of sandy water flow and can separate sand and stones in the water. 　　Filtration principle: Centrifugal filters work on the principle of gravity and centrifugal force to remove solid particles heavier than water. Water enters the centrifuge body tangentially from the water inlet pipe, and the rotation generates centrifugal force, which pushes the sediment and other high-density solid particles to move toward the pipe wall, forming a swirling flow, prompting the sand and stones to enter the sand collection tank, and the clean water flows into the water outlet along the flow, that is, the separation of water and sand is completed. Sand removal should be carried out regularly, and the sand removal time should be determined according to the water quality.

advantage: 1. The process is simple and does not require auxiliary equipment such as separators, ammonia purification towers, vacuum machines, and air compressors. ； 2. Low power consumption, about 1 ton of soda ash 10KW.h electricity, while a vacuum filter requires approximately 15KW.h electricity ； 3. The moisture content of heavy alkali is low, generally below 12%, and the calcination process can * * Reduce energy consumption and even eliminate back-alkali and simplify process equipment. However, vacuum filtration heavy alkali has high moisture content, generally 14 to 20%. ； shortcoming: 1. The heavy alkali crystal particles are fine, and the centrifugal filter needs a specially made metal filter, otherwise the leakage will affect the output. 2. The automation and continuity are poor, while the vacuum filter is easy to produce automatically and continuously. 3. The production capacity of the unit equipment is small. A large centrifuge can produce 200t of soda ash per day, while a large vacuum filter can produce 400 to 600t of soda ash per day. 4. The loss of ammonia is large because there is no ammonia recovery device. 5. The loss of alkali is large. Due to the large centrifugal force, crystals easily pass through the medium. The general loss is about 2 to 3.5%, while the loss of the vacuum filter is about 1 to 2.5%.