Process for carnallite drying and special equipment
A special equipment and salt drying technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve problems such as high energy consumption, high operating costs, and low process efficiency, and achieve energy reduction consumption, the process is simple and easy to control, and the effect of reducing environmental pollution
Pending Publication Date: 2019-10-18
SHANGHAI JINGYU ENVIRONMENT ENG
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Problems solved by technology
[0006] The purpose of the present invention is to provide a process for the drying of mixed salts through the effective combination of stirring, drying, condensation and scrubbing processes in order to solve the problems of low efficiency, high energy consumption and high operating cost of the existing mixed salt drying process. , the process is simple and easy to control, which can effectively reduce environmental pollution, realize the reuse of water resources, reduce the energy consumption of the system, thereby reducing investment and operation costs and hazardous waste disposal costs
Method used
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[0028] as attached figure 2 As shown, a special equipment for the drying process of miscellaneous salts, which includes a stirring tank 1, a drum scraper dryer 2, a condenser 3, a scrubber 4, a liquid collection tank 5, a water inlet tank 6, and a salt collection system 7. Condensed water reuse system 8. Sewage discharge and collection system 9. First water inlet pump 10, second water inlet pump 11, circulation pump 12, induced draft fan 13;
[0029] The water inlet tank 6 is connected to the feeding end of the mixing tank 1, and the first water inlet pump 10 is installed on the connecting pipeline; the discharge port of the mixing tank 1 is connected to the feeding port of the drum scraper dryer 2, and the connecting pipeline is equipped with The second water inlet pump 11; the outlet of the drum scraper dryer 2 is connected to the salt collection system 7, the condensed water outlet of the drum scraper dryer 2 is connected to the inlet of the condensed water recycling syste...
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The invention discloses a process for carnallite drying and special equipment. Inlet water is mixed well through stirring of a stirring pot without producing crystallization, and then enter a drum scraper blade drying machine, dry salt is obtained by using steam heating, secondary steam produced by the drum scraper blade drying machine is condensed through a condenser and discharged to a mixed salt dissolving tank for use, secondary steam without condensation is introduced into a scrubber tower, and the obtained steam is air-drafted by an induced draft fan and injected into the atmosphere. According to the process for carnallite drying and the special equipment, effective combination of stirring, drying, condensing and scrubbing processes, the process is simple and easy to control, environmental pollution can be effectively reduced, water resources are reused, and energy consumption of a system is lowered.
Description
technical field [0001] The invention belongs to the technical field of industrial waste salt treatment, and specifically relates to a process and special equipment for drying miscellaneous salts. Background technique [0002] With the increasingly stringent environmental protection policies, the requirements for industrial wastewater treatment are getting higher and higher, such as petrochemical, coal chemical, metallurgy, pharmaceutical, printing and dyeing, papermaking and other industrial production wastewater must meet the treatment requirements of zero discharge, and the current industrial wastewater is processed After treatment, there are still a large amount of miscellaneous salts that cannot be disposed of. Miscellaneous salt contains a large amount of organic or inorganic impurities, which cannot be used as resources. Generally, it can only be treated as hazardous waste. If it is not disposed of, it will endanger the environment and cause waste of resources. [000...
Claims
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IPC IPC(8): C02F9/10B01D53/78C02F101/30
CPCC02F1/04C02F1/00B01D53/78C02F2101/30
Inventor 李鹏飞夏俊方方小琴周耀水张水水陆魁肖龙博
Owner SHANGHAI JINGYU ENVIRONMENT ENG