Quenching system applied to process of cracking coal by using plasma

Abstract

The invention discloses a quenching system applied to the process of cracking coal by using plasma, comprising a cracking gas inlet, a quencher body, a quencher inner core, a quencher device inner core support pillar, a quenching device cylinder, a quencher inner core atomization device, a quencher body atomization device, a cracking gas outlet, quenching medium inlet tubes, a quenching medium channel, a quenching gas inlet tube and a quenching gas channel. The quenching device is in an annular space type, the inner wall of the quencher body and the quencher inner core are both in conical shapes to from an annular channel, and the top end of the inner core is sealed so that the cracking gas can only flow through the annular channel. The quenching medium atomization devices are respectively installed on the quencher inner core and the quencher body, and single-medium nozzles, double-medium nozzles or an integrated atomization device can be adopted for the atomization devices. The invention better solves the problem that the quenching medium can not reach the central area of cracking gas in the process of cracking coal by using the plasma to cause reduced yield of acetylene, in addition, the amplification effect of the quenching system is smaller.

Description

technical field [0001] The invention belongs to the field of chemical equipment, in particular to a quenching system applied to the process of plasma cracking coal. Background technique [0002] Acetylene is a very important basic organic chemical raw material. At present, the production processes of acetylene mainly include: calcium carbide method, natural gas partial oxidation method, etc. The calcium carbide method is mature and reliable, the raw materials are easy to obtain, and the technical threshold is low. However, the calcium carbide method has problems such as high energy consumption and serious environmental pollution. Although the natural gas partial oxidation process has low pollution, the technology is complicated, the resources are few, and the investment cost is high. At present, domestic acetylene production is still dominated by calcium carbide method. The process of plasma cracking coal to acetylene has the advantages of short process, low resource con...

AI Technical Summary

Problems solved by technology

For the process of plasma cracking coal to acetylene, the flow rate of the cracking gas entering the quencher is as high as 100-300m / s, which is much higher than the injection speed of the quenching agent droplets, and the atomized quenching agent droplets can pass through the cracking The distance of the gas is very short, it is difficult to spray into the central area of ​​the cracked gas, so that part of the acetylene is decomposed at high temperature, and the yield is reduced

Moreover, this problem becomes more and more serious as the size of the installation increases.

Images