Novel coal gas phenol water treatment device

Abstract

The invention discloses a novel coal gas phenol water treatment device, which comprises a coal gas producer, the coal gas outlet of which is in connection with the inlet of a dust collector. A dust collector outlet is connected to a phenol water evaporator, the outlet of which is in connection with the inlet of a coal gas cooler. The outlet of the coal gas cooler is connected to an oil-water separator, the phenol water outlet of which is in connection with the phenol water evaporator. The treatment device is characterized in that the lower end of the coal gas producer is provided with a water seal pipe, the lower end of which is positioned in a water seal tank, and the side wall of the water seal pipe is provided with an air inlet pipe. The phenol water outlet of the oil-water separator is connected to the phenol water evaporator and is then connected to a spraying nozzle on the side wall of the water seal pipe. Characterized by simple and practical structure, and low cost, the coal gas phenol water treatment device of the invention reutilizes the phenol water in coal gas production so as to meet the demand of reducing phenol water discharge and improve the discharge environmental protection standards of enterprises, thus both being in line with the environmental protection requirements of production and reducing the sewage treatment cost of enterprises.

Description

technical field [0001] The invention relates to the field of coal chemical sewage treatment, in particular to a novel gasifier phenol water treatment device. Background technique [0002] In the coal chemical industry such as methanol and dimethyl ether, single-stage gas generators were often used in the past. The phenol produced is mixed with circulating cooling water in the washing tower and then enters the cooling water pool. As time goes by, the phenol in the cooling water pool The concentration of phenolic water will be higher and higher, and when the concentration reaches a certain level, the cooling effect of the cooling water will be reduced. In the treatment process, the cooling water with high concentration of phenol is generally discharged, and the cooling effect of the cooling water is maintained by replenishing new tap water. Therefore, when the cooling water is discharged, the phenol is also discharged together, thereby causing damage to the surrounding environ...

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Problems solved by technology

[0004] At present, most of the gasifiers used in the market are double-stage gasifiers, and the phenol produced is condensed into phenolic water with a high concentration by the cooler, that is, about 100kg of phenolic water will be produced per ton of coal burning, although the phenolic water The amount is less, but the total phenol content has not decreased, and the problem of phenol water pollution and treatment cannot be fundamentally solved, which has seriously affected the normal production of the enterprise

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