Ammonium sulfate production system and preparation method thereof
A production system and ammonium sulfate technology, applied in the field of ammonium sulfate, can solve problems such as increasing production costs, environmental pollution, etc., and achieve the effects of reducing pollution, eliminating the release of waste ammonia, and fully recycling
Active Publication Date: 2015-05-20
山东沃蓝生物集团有限公司
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Problems solved by technology
[0002] The ammonia gas produced by urea condensation, the high-temperature flue gas produced by urea condensation furnace and the dilute sulfuric acid produced in the refining process of cyanuric acid are troublesome to deal with, which will increase the production cost, and direct discharge will cause serious environmental pollution
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[0019] The present invention provides a kind of ammonium sulfate production system, and this system comprises the saturator 1 that is used to generate ammonium sulfate, and this saturator 1 is respectively connected with the tail gas output device 2 of the ammonia-containing tail gas that cyanuric acid device produces, the mother liquor pool 3 of splendid attire sulfuric acid , the cooling absorption tower 4 that removes ammonia in the tail gas is connected, and the cooling absorption tower 4 is also connected with the concentrated acid water output device 5 and the mother liquor pool 3 of the concentrated acid water generated by the cyanuric acid device, and the saturator 1 is also connected with the second effect evaporation The device 6, the crystallization kettle 7, the centrifuge 8, and the dryer 9 are connected in sequence. Wherein the second-effect evaporator 6 comprises a first-effect evaporator and a corresponding first-effect heat exchanger, a second-effect evaporator...
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The invention particularly relates to an ammonium sulfate production system and a preparation method thereof. The ammonium sulfate production system comprises a saturator for generating ammonium sulfate. The ammonium sulfate production system is characterized in that the saturator is respectively connected with an exhaust output device for outputting ammonia-containing exhaust generated by an cyanuric acid device, a mother solution tank containing sulfuric acid, and a cooling absorption tower for removing ammonia in the exhaust; the cooling absorption tower is also connected with a concentrated acid water output device for outputting concentrated acid water generated by the cyanuric acid device, and the mother solution tank; and the saturator is also sequentially connected with a dual-effect evaporator, a crystallization kettle, a centrifugal machine and a drier. The invention fully utilizes waste heat of flue gas, and cancels the existing hot blast furnace for drying ammonium sulfate. The waste acid water is sufficiently recycled; and the invention greatly enhances the saturation degree of the ammonium sulfate solution, and uses the dual-effect evaporator instead of the original single-effect kettle-type evaporation device, thereby greatly lowering the vapor consumption.
Description
(1) Technical field [0001] The invention relates to the technical field of ammonium sulfate, in particular to an ammonium sulfate production system and a preparation method thereof. (2) Background technology [0002] The ammonia gas produced by urea condensation, the high-temperature flue gas produced by urea condensation furnace and the dilute sulfuric acid produced in the refining process of cyanuric acid are troublesome to deal with, which will increase the production cost, and direct discharge will cause serious environmental pollution. (3) Contents of the invention [0003] In order to make up for the deficiencies of the prior art, the invention provides an ammonium sulfate production system that protects the environment and reduces costs and a preparation method thereof. [0004] The present invention is achieved through the following technical solutions: [0005] An ammonium sulfate production system, including a saturator for generating ammonium sulfate, which is ...
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IPC IPC(8): C01C1/242
CPCY02P20/129
Inventor 杨一言郭振国
Owner 山东沃蓝生物集团有限公司