Chlorcosane tail gas absorption technology and equipment
A technology for chlorinated paraffin and tail gas absorption, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of high labor intensity, poor control of hydrochloric acid concentration, etc., and achieve the effect of ensuring stability
Inactive Publication Date: 2010-08-25
LIAOCHENG LUXI CHEM ENG DESIGN
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Problems solved by technology
Disadvantages of the process: when the dilute acid reaches a certain concentration, the circulation absorption must be stopped, the absorption process is intermittent operation, the labor intensity is high, and the concentration of hydrochloric acid is not easy to control
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The invention relates to a chlorcosane tail gas absorption technology and equipment. Chlorcosane tail gas firstly enters a first-grade falling film absorber; after adsorbing hydrogen chloride gas, the first-grade falling film absorber recovers finished product acid and then the recovered finished product acid enters a concentrated acid slot, and residual hydrogen chloride gas enters a secondary-grade falling film absorber; dilute acid can be obtained after being adsorbed by the secondary-grade falling film absorber; recovered dilute acid enters into a dilute acid circulating slot; dilute acid in the dilute acid circulating slot is sent out by the dilute acid circulating pump, parts of dilute acid enter a secondary-grade falling film absorber for cycle absorption, and other parts enter the first-grade falling film absorber and are absorbed and then enter the concentrated acid slot. Compared with the prior art, the invention saves one concentrated acid circulating pump, realizes continuous discharging of finished acid and ensures the stability of acid concentration.
Description
Chlorinated paraffin tail gas absorption process and equipment Technical field: The invention relates to the treatment of tail gas in a chlorinated paraffin device, in particular to a process and equipment for absorbing the tail gas of chlorinated paraffin. Background technique: The tail gas produced by the chlorinated paraffin plant is mainly hydrogen chloride gas. Some domestic chlorinated paraffin manufacturers send this part of the tail gas into the hydrochloric acid synthesis furnace for combustion. The original tail gas absorption (acid absorption) process (see Figure 1) is: The exhaust gas enters the first and second falling film absorbers successively. The first falling film absorber absorbs 60-70% hydrogen chloride gas, and the second falling film absorber absorbs 30-40% hydrogen chloride gas to form concentrated acid and dilute acid respectively. Each is cyclically absorbed, and the acid used as the circulating liquid part is replenished with one-time water. After th...
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IPC IPC(8): B01D53/18
Inventor 牛军张雷李方臣孙富新管艳华谢培建闫志强
Owner LIAOCHENG LUXI CHEM ENG DESIGN
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