Sulfuric acid automatic acid preparation system and control method
A technology for mixing acid and sulfuric acid, applied in chemical instruments and methods, sulfur trioxide/sulfuric acid, mixer accessories, etc., can solve the problems affecting the safety of sulfuric acid mixing equipment, and achieve automatic operation, controllable operating temperature, and production safety. Effect
Active Publication Date: 2020-10-02
ZHENGZHOU UNIV
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These documents all involve the particularity of the dilution of concentrated sulfuric acid (concentrated sulfuric acid and dilute sulfuric acid are corrosive, and dilution produces a large amount of dilution heat, which requires the detection and control of dilute sulfuric acid concentration, etc.), but most of the work focuses on continuous acid preparation and dilute sulfuric acid concentration. less consideration is given to the impact of operating temperature on the material of acid dispensing equipment and the corrosion of pipelines, as well as the impact of changes in ambient temperature and cooling water parameters on production load and production continuity, which also seriously affect the operation of sulfuric acid acid dispensing equipment and personnel safety
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[0013] The embodiments described in the present invention will be described below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to this embodiment, and other embodiments obtained by the control method also belong to the protection scope of the present invention.
[0014] The sulfuric acid automatic acid distribution system and control method described in the present invention are shown in figure 1 and figure 2 . The sulfuric acid automatic acid distribution system consists of concentrated sulfuric acid storage tank 01, concentrated sulfuric acid pump 02, sulfuric acid flow transmitter 03, dilution cooler 04, dilute sulfuric acid storage tank 05, circulating cooling water tower 06, circulating water pump 07, process water regulating valve 08, Process water flow transmitter 09, acid distribution control system 10, temperature detection transmitter 11, temperature regulator 12, frequency converter 13, ratio device ...
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The invention relates to an automatic sulfuric acid compounding system and a control method. The acid distribution system includes concentrated sulfuric acid storage tank, concentrated sulfuric acid pump, dilution cooler, dilute sulfuric acid storage tank, circulating cooling water tower, circulating water pump, acid distribution control system and related pipelines. When preparing acid, the sulfuric acid pump pumps concentrated sulfuric acid into the dilution cooler, and detects the flow rate of concentrated sulfuric acid, controls the flow rate of process water through the ratio control system, dilutes the concentrated sulfuric acid to the specified concentration, and flows into the dilute sulfuric acid storage tank after cooling. The control method controls the output of the concentrated sulfuric acid pump through the temperature regulator and frequency converter according to the sulfuric acid outlet temperature of the dilution cooler to realize the adjustment of the added amount of concentrated sulfuric acid; at the same time, according to the acid concentration and the added amount of concentrated sulfuric acid, the system is controlled through the follow-up ratio Adjust the flow rate of process water to realize acid mixing operation. The method can realize the requirements of acid compounding concentration and removal of acid dilution heat, and can ensure the safety of acid compounding operation and equipment.
Description
technical field [0001] The invention belongs to the field of chemical production, and relates to an automatic acid dispensing system and a control method for concentrated sulfuric acid, in particular to an automatic control method combining the operating temperature of the acid dispensing system with a follow-up ratio control system. Background technique [0002] In the chemical industry, a large amount of dilute sulfuric acid is often used, so manufacturers need to prepare 98% concentrated sulfuric acid into a given concentration of dilute acid. The preparation of dilute sulfuric acid often adopts batch operation, that is, first add quantitative water to a fixed container, then slowly add quantitative concentrated sulfuric acid, and mix and stir under cooling conditions. This method of acid preparation has many disadvantages, such as a large amount of dilution heat will be generated rapidly during acid preparation, causing the temperature of the diluent to be too high, solu...
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Login to View More IPC IPC(8): B01F15/04B01F15/00C01B17/69
CPCC01B17/69B01F35/2215B01F35/831
Inventor 范忠雷
Owner ZHENGZHOU UNIV