Circulating cooling system of HCL synthesis furnace

Abstract

The invention discloses a circulating cooling system of an HCL synthesis furnace. The system structurally comprises a furnace body, wherein a cooling channel for circulating cooling water in and out is formed in the furnace body, the system further structurally comprises a cooling tower and a neutralizing tower, the interior of the cooling tower is divided into a cold water area and a hot water area, a water inlet pipe communicating with the interior of the cooling channel is arranged on the cold water area, a water suction pump is arranged between the cold water area and the hot water area, a refrigerating machine is arranged in the hot water area, a stirring piece and a PH neutralizing piece are arranged in the neutralizing tower, a hot water outlet pipe is connected between the neutralizing tower and the cooling channel in a communicating mode, and a hot water inlet pipe is connected between the neutralizing tower and the hot water area in a communicating mode. According to the system, the cyclic utilization of the cooling water is achieved, moreover, the discharge of acidic wastewater is avoided, and the environment is effectively protected.

Description

Technical field: [0001] The invention relates to the technical field of synthesis furnace production, in particular to a circulating cooling system of an HCL synthesis furnace. Background technique: [0002] HCl is an important inorganic chemical raw material in the chlor-alkali industry, widely used in dyestuff, medicine, food, printing and dyeing, leather, metallurgy and other industries. HCl synthesis furnace is the key equipment for HCl production. h 2 and Cl 2 Combustion in the synthesis furnace produces HCl gas with a temperature as high as 2300°C. After gradually cooling to 140°C, it is purified and washed, and finally synthesizes hydrochloric acid with water. [0003] At present, the HCl synthesis furnace generally adopts a heat-resistant and impermeable graphite cylinder coated steel plate and an interlayer water-cooled structure to ensure the purity of HCl and system safety. The cooling water in the interlayer water-cooled structure is heated by the high tempera...

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Problems solved by technology

[0003] At present, the HCl synthesis furnace generally adopts a heat-resistant and impermeable graphite cylinder coated steel plate and an interlayer water-cooled structure to ensure the purity of HCl and system safety. The cooling water in the interlayer water-cooled structure is heated by the high temperature inside the synthesis furnace. After the exchange, in view of the existence of HCL, it is easy to dissolve in hot water, resulting in the cooling water changing from neutral to acidic after heat exchange with the synthesis furnace. It is difficult to realize the recycling of cooling water, which not only wastes water resources, but also It is easy to pollute the environment if it is discharged outside

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