System and method for purifying and recycling HCL-containing waste gas
A waste gas purification and waste gas technology, applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve the problems of high treatment cost, complicated HCL-containing waste gas purification process, waste of useful components, etc., to reduce investment and operating costs. Effect
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[0024] The following examples are shown to specifically illustrate certain embodiments of the present invention, and should not be construed as limiting the scope of the present invention. The content disclosed in the present invention can be improved in terms of materials, methods and reaction conditions at the same time, and all these improvements should fall within the spirit and scope of the present invention.
[0025] Such as figure 1 As shown, a system for purifying and recovering HCL-containing waste gas includes an absorption tower 201 and a stripping tower 202. The lower inlet of the absorption tower 201 is respectively connected with HCL-containing waste gas and silicon tetrachloride liquid through pipelines. The communication pipeline between the HCL exhaust gas and the absorption tower 201 is also provided with a first heat exchanger 101, the first heat exchanger 101 is connected with a circulating cooling water source 401, and the bottom outlet of the absorption tower...
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