Device and method for recovering sulfuric acid from waste sulfuric acid generated in process of producing disperse red 60# dyes
A technology of waste sulfuric acid and disperse red, applied in the field of sulfuric acid devices, can solve the problems of inoperable vacuum concentration equipment, carbonization and accumulation of organic impurities, affecting the recycling of sulfuric acid, etc., and achieves the effects of good energy saving effect, realization of reuse, and short process flow.
Inactive Publication Date: 2013-10-30
辽阳环亚废酸再生科技有限公司
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[0002] The content of sulfuric acid in the waste sulfuric acid produced during the production of disperse red 60# dye is about 54%, and also contains about 1% of organic impurities. The color of waste sulfuric acid is black brown, and there are granular precipitates at the bottom. Amino-2-bromo-4-hydroxyanthraquinone, if the vacuum concentration method is used for recycling, the organic impurities cannot be significantly destroyed and reduced, and a large number of bubbles are generated, the normal vacuum concentration equipment cannot be operated, and the device is expensive, and the organic impurities are carbonized Accumulation, affecting the recycling of sulfuric acid
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[0016] With reference to the accompanying drawings, the described device for recovering sulfuric acid in waste sulfuric acid includes a concentration furnace F301, a concentration pot R301 is installed on the concentration furnace F301, a pot cover is arranged on the top of the concentration pot R301, a fractionation tower T301 is arranged on the pot cover, and a fractionation tower T301 is installed in the fractionation tower. There are fillers, the fillers can be high silicon cast iron or glass or fluoroplastics, the bottom of the fractionation tower is connected to the concentration pot, the tube side of the dilute sulfuric acid preheater E303 is connected to the feed port of the fractionation tower T301 through pipelines, and the shell side of the dilute sulfuric acid preheater There is a pipeline connected to the shell-side inlet of the concentrated sulfuric acid cooler E301. The concentrated sulfuric acid cooler has a cooling water inlet and outlet for connection with the ...
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The invention relates to a device and method for recovering sulfuric acid in waste sulfuric acid generated in the process of producing disperse red 60# dyes, mainly solving the problem that the waste sulfuric acid generated when disperse red 60# dyes are produced can not be recycled. The device comprises a concentrating pan, a fractionating tower, a dilute sulfuric acid preheater, a concentrated sulfuric acid cooler, a concentrated sulfuric acid buffer tank, a concentrated sulfuric acid head tank, a waste sulfuric acid head tank, a medicament head tank and the like. The method is characterized in that concentrated sulfuric acid in the concentrated sulfuric acid buffer tank is circularly preheated in the concentrated sulfuric acid head tank, the preheater, the fractionating tower, the concentrating pan and the concentrated sulfuric acid cooler; the sulfuric acid enters the fractionating tower after being evaporated, and the waste sulfuric acid in the concentrating pan is sent to the waste sulfuric acid head tank and then enters the preheater; the waste sulfuric acid enters the fractionating tower; the waste sulfuric acid enters the concentrating pan after being concentrated, and a medicament is added to the concentrating pan; and the hot sulfuric acid enters the cooler after being cooled and then enters the concentrated sulfuric acid buffer tank, and part of the sulfuric acid is sent to the head tanks and part of the sulfuric acid is sent to a product storage tank by a pump. The device and the method have the advantage that the sulfuric acid in the waste sulfuric acid can be effectively recovered.
Description
Technical field: [0001] The invention relates to a device for recovering sulfuric acid in waste sulfuric acid produced in the production of disperse red 60# dye and a recovery method thereof. Background technique: [0002] The content of sulfuric acid in the waste sulfuric acid produced during the production of disperse red 60# dyestuff is about 54%, and also contains about 1% of organic impurities. The color of waste sulfuric acid is dark brown, and there are granular precipitates at the bottom. Amino-2-bromo-4-hydroxyanthraquinone, if the vacuum concentration method is used for recycling, the organic impurities cannot be significantly destroyed and reduced, and a large number of bubbles are generated, the normal vacuum concentration equipment cannot be operated, and the device is expensive, and the organic impurities are carbonized Accumulation affects the recycling of sulfuric acid. Invention content: [0003] The technical problem to be solved by this invention is to ...
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IPC IPC(8): C01B17/90
Inventor 程舒扬张立超程茂平赵少华刘东周淑荣
Owner 辽阳环亚废酸再生科技有限公司