Cooling and washing equipment for high-temperature coal gas

Abstract

The invention discloses cooling and washing equipment for high-temperature coal gas. The cooling and washing equipment is characterized by comprising a pressure bearing casing, wherein a washing water inlet and a synthesis gas outlet are formed in two sides of the pressure bearing casing respectively; a liquid discharge opening and a slug discharge opening are formed in the bottom; the upper part of the pressure bearing casing is a gasification chamber, and the bottom of the pressure bearing casing is a dreg pool; the lower side of the gasification chamber is connected with a water ejecting ring; the water ejecting ring comprises an outer water ejecting ring and an inner water ejecting ring; the washing water inlet is communicated with the inner water ejecting ring; an opening is formed in the upper side of the inner water ejecting ring; the inner water ejecting ring is communicated with the outer water ejecting ring through the opening; the lower side of the water ejecting ring is connected with a downcomer; at least one atomization nozzle is arranged on the outer side of the outer water ejecting ring at the position outside the downcomer. According to the invention, double-layer structure water ejecting rings which are communicated in the inner part are adopted, the requirement that the cooling water enters the downcomer from the inner layer is met, and the requirement of water supply for the atomization nozzle on the outer layer is met; the downcomer with the double ring wall structure can effectively overcome uneven distribution of the water film, and can effectively protect the downcomer from burning damage.

Description

technical field [0001] The invention relates to high-temperature gas cooling and washing equipment, which belongs to the technical field of entrained bed coal gasification. Background technique [0002] Large-scale pressurized entrained bed coal gasification technology has become an important way and development direction of clean and efficient coal conversion in my country, and has very important practical and strategic significance for saving energy and reducing greenhouse gas emissions. [0003] The coal gasification reaction in the entrained bed gasification device that uses coal and other hydrocarbons as raw materials is usually carried out at a high temperature of 1200-1700 ° C. The high-temperature crude synthesis gas generated by the reaction needs to be cooled to a specific temperature before it can enter subsequent production operations craft. Different types of gasifiers have different cooling methods for high-temperature crude syngas according to process require...

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve are the technical problems that the downcomer is easy to burn through, the synthesis gas is ash-carrying, and the internal components of the washing and cooling chamber are easily damaged in the existing device for cooling and washing high-temperature gas.

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