Burner, entrained-bed gasifier and combustion method for entrained-bed gasifier

Abstract

The invention provides a burner, an entrained-bed gasifier and a combustion method for an entrained-bed gasifier. The burner includes a first pipe body, a second pipe body, a third pipe body, a fourth pipe body and a fifth pipe body . The first pipe body is the first gasification agent passage, the second pipe body is sleeved on the outside of the first pipe body, the pulverized coal passage is between the second pipe body and the first pipe body, and the third pipe body is sleeved on the second pipe body. On the outside of the tube body, there is a fuel channel between the third tube body and the second tube body, the fourth tube body is sleeved outside the third tube body, and the second gasification agent channel is between the fourth tube body and the third tube body , the fifth pipe body is sleeved on the outside of the fourth pipe body, and there is a coolant channel between the fifth pipe body and the fourth pipe body. The burner can complete the functions of ignition, start-up, and coal feeding, so the combustion process is simplified and the combustion efficiency is improved. Two gasification agent channels are set to make the pulverized coal and the gasification agent mix twice, which improves the efficiency of the pulverized coal and gasification. The mixing effect of chemical agent is beneficial to improve the carbon conversion efficiency of pulverized coal.

Description

technical field [0001] The invention relates to combustion technology, in particular to a burner, an entrained-bed gasifier and a combustion method for the entrained-bed gasifier. Background technique [0002] In the entrained bed gasifier equipment, the burner is one of the important components, which is used to complete the functions of ignition, start-up and coal feeding. [0003] In the prior art, the burner of the entrained bed gasifier includes three independent burners: an ignition burner, a start-up burner and a coal feeding burner, and these three burners respectively complete the functions of ignition, starting operation and coal feeding. First, the ignition burner is responsible for igniting the fuel, and then the start-up burner continues to inject fuel into the furnace of the entrained bed gasifier. The fuel continues to burn in the furnace to generate heat, so that the temperature in the furnace continues to rise. When the temperature reaches the coal feeding ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a burner, an entrained-flow gasifier and a combustion method for an entrained-bed gasifier, which are used to solve the problems in the prior art that the burner has a large structure, complicated operation and low carbon conversion efficiency of pulverized coal

Images