Method for reducing harmful materials in by-product hydrochloric acid in production process of chlorobenzene
A technology of production process and harmful substances, which is applied in the field of reducing harmful substances in by-product hydrochloric acid, can solve the problems of not meeting the production demand of hydrochloric acid, poor quality of by-product hydrochloric acid, and increasing production costs, so as to improve resource utilization and reduce production costs , the effect of reducing material loss
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[0016] Example 1:
[0017] The method for reducing harmful substances in the by-product hydrochloric acid in the chlorinated benzene production process of this embodiment: pressurize the atmospheric hydrogen chloride gas separated from the chlorinated benzene system to 0.08 MPa through a Roots blower, and then condense it in a first-stage condenser. Condensate water and low-boiling substances, pass through a gas-liquid separator to separate and treat, the gaseous hydrogen chloride is continuously pressurized to 1MPa by a compressor, and organic impurities are further removed by a secondary condenser, and then enter the adsorption tower from the bottom of the adsorption tower with adsorbent Qualified hydrogen chloride gas is extracted from the top of the tower. The hydrogen chloride gas is absorbed by the absorption tower to obtain the qualified by-product hydrochloric acid, and then enters the hydrochloric acid storage tank after being cooled by the cooler. The recovered benzene s...
Example Embodiment
[0018] Example 2:
[0019] The method for reducing harmful substances in the by-product hydrochloric acid in the chlorinated benzene production process of this embodiment: pressurize the atmospheric hydrogen chloride gas separated from the chlorinated benzene system to 0.12 MPa through a Roots blower, and then condense it by a first-stage condenser. After condensing water and low-boiling substances, passing through the gas-liquid separator, the gaseous hydrogen chloride is continuously pressurized to 1.5MPa through the compressor, and the organic impurities are further removed by the secondary condenser, and then enters the adsorption from the bottom of the adsorption tower with adsorbent. The tower produces qualified hydrogen chloride gas from the top of the tower. The hydrogen chloride gas is absorbed by the absorption tower to obtain qualified by-product hydrochloric acid, cooled by a cooler, and then enters the hydrochloric acid storage tank. The recovered benzene series organ...
Example Embodiment
[0020] Example 3:
[0021] The method for reducing harmful substances in the by-product hydrochloric acid in the chlorinated benzene production process in this embodiment: pressurize the atmospheric hydrogen chloride gas separated from the chlorinated benzene system to 0.1 MPa by a Roots blower, and then condense it in a first-stage condenser. After condensing water and low-boiling substances, passing through a gas-liquid separator, the gaseous hydrogen chloride is continuously pressurized to 1.2MPa through a compressor, and organic impurities are further removed by a secondary condenser, and then enters the adsorption from the bottom of the adsorption tower with adsorbent. The tower produces qualified hydrogen chloride gas from the top of the tower. The hydrogen chloride gas is absorbed by the absorption tower to obtain qualified by-product hydrochloric acid, cooled by a cooler, and then enters the hydrochloric acid storage tank. The recovered benzene series organics enter the be...
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