【Weekly Image】Image 2 of July 2017
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What is the device in the picture above? Say the name and earn 10 wealth! State the precautions and receive an additional 5 wealth points! Answer: Introduction to automatic backwash filter equipment: It filters out substances such as gums and large particles of mechanical impurities from crude oil, with a typical precision of 25 microns. Some problems encountered and insights gained during the actual use of the equipment: The factors that generally affect backwashing include the proportion of gasoline, the properties of the crude oil, the content of mechanical impurities, the number of backwash filters, and the amount of feed material used in the reaction. a. Sticking fault of the programmable valve; the program gets stuck and remains in the flushing mode, resulting in a disruption in gasoline supply. b. The sludge pump in the tank that has been flushed cannot be started, which may lead to overflow of the tank during flushing. c. Excessive differential pressure can cause the filter screens to become blocked by mechanical impurities and gums; steam or nitrogen is required for backwashing~~~ If steam is used, liquid must be removed from it in advance. http://down.hcbbs.cc/attachment/forum/201706/10/203353z7y06fdo70r6eod0.jpg Petrochemical sector – New ideas for energy savings: the “Creative Thinking” campaign (the second phase is currently in full swing). http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1666758 (Source: Haichuan Chemical Industry Forum) 2017: “My Technical Upgrades” in the coal chemical industry. http://bbs.hcbbs.com/thread-1786290-1-1.html (Source: Haichuan Chemical Industry Forum website)
Membrane separation: (1) It takes place at room temperature, resulting in minimal loss of active ingredients; it is particularly suitable for the separation and concentration of heat-sensitive substances such as antibiotics in pharmaceuticals, as well as juices, enzymes, and proteins. (2) There is no phase change, so the original flavor is preserved, and energy consumption is very low – the cost is approximately 1/3 to 1/8 of that of evaporation concentration or freeze concentration. (3) No chemical reactions occur; it is a typical physical separation process that does not require chemical reagents or additives, ensuring that the product remains unpolluted. (4) It offers good selectivity, enabling separation at the molecular level, and possesses superior properties that cannot be replaced by conventional filtration methods. (5) It is highly adaptable – the processing scale can be adjusted as needed, and the process can be carried out continuously or intermittently. It is simple to operate and easy to automate. (6) Energy consumption is low – it only requires electrical power, with energy usage being extremely low; the cost is approximately 1/3 to 1/8 of that of evaporation concentration or freeze concentration
This post was last edited by chuanhengmpq on 2017-7-8 at 19:27. Membrane separation systems include: ultrafiltration, nanofiltration, RO reverse osmosis, SWRO seawater desalination, and DTRO disc-type systems. These systems are used to remove impurities and salts from materials. I have never seen such equipment before.
Membrane separation systems include: ultrafiltration, nanofiltration, RO reverse osmosis, SWRO desalination, and DTRO disc-type systems – all used to remove impurities and salts from materials
The tubular backwash filter consists of a tank, a filter element assembly, pipelines connected to the equipment locally, automatic valves, a control cabinet, and other components. Multiple filter tubes are installed inside the filter housing; the dirty fluid flows from the outside of the filter tubes toward their interior, and finally exits through the liquid collection chamber of the filter. Control is based on differential pressure/time control (differential pressure takes precedence); when the differential pressure between the inlet and outlet of the filter reaches the set threshold, the filter enters reverse flushing mode. The filter cartridge unit that requires backwashing stops filtering to carry out backwashing.