High-temperature gas washing and cooling device

Abstract

The invention discloses a high-temperature gas washing and cooling device. The high-temperature gas washing and cooling device comprises a housing. The top of the housing is provided with an opening for receiving gas needing to be washed and cooled. The middle of the housing is provided with a gas-guide tube. An inlet of the gas-guide tube is in a butt joint relationship with the opening. A washing and cooling water distribution ring is arranged at the butt joint position. A lower part of the housing is provided with a static slag breaking device. Multiple pressure atomizers for spraying water mist into the housing to reduce a temperature of the gas needing to be washed and cooled are arranged on the periphery of the housing. Each one of the pressure atomizers comprises a main body, the main body is provided with a port communicated with a washing and cooling water source, an annular flow deflector is arranged in the main body, a front end of the annular flow deflector is provided with a nozzle, and the nozzle points to an outlet of the gas-guide tube. Through combination of vertical falling film spray flowing and pressure atomization, the high-temperature gas washing and cooling device effectively improves heat and mass transmission effects, reduces slag-caused blocking possibility and improves a cooling chamber blocking resistance capability.

Description

technical field [0001] The invention relates to a high-temperature gas washing and cooling device. Background technique [0002] The gasifier is mostly used to process crude synthetic gas, which is produced from hydrocarbons such as coal, natural gas, shale gas, petroleum coke, biomass, sludge, etc. 2 , CO, CO 2 As the main component, its general pressure is 0.2-12MPa, and the temperature is 1000-1800°C. The coal gas contains ash, and its dry gas composition is CO+H 2 =75~94%, CO 2 =2~23%, N 2 , Ar, H 2 S, COS, NH 3 , HCl, CH4, HCN, HCOOH, etc. 3-5%. [0003] In order to use synthetic gas for the production of synthetic ammonia, methanol, oil products, olefins and other chemical industries, combined cycle power generation (IGCC), metallurgical industry (direct reduction ironmaking) and other industrial fields, it must be washed first to remove the ash entrained in it and fly ash. [0004] At present, the chilling process is the most widely used and most mature techn...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a high-temperature gas washing and cooling device in order to overcome the high probability of slag plugging in the slag port or in the pipe in the prior art, which causes high-temperature gas bias flow and then affects the long-term operation of the device.

Images