Plasma ignited composite burner system for dried pulverized coal gasification furnace

Abstract

The invention provides a composite burner system with a plasma ignition device for a dried pulverized coal gasification furnace. The system comprises an outer loop pipe, an inner loop pipe and a central pipe, wherein the bottom end of the central pipe is sleeved in the inner loop pipe; the bottom end of the inner loop pipe is sleeved in the outer loop pipe; the top end of the central pipe is provided with a plasma generator; the central pipe is connected with the plasma generator by a flange, and is provided with pipelines which are connected with a pulverized coal-air supply system, a central gasifying agent supply system and a replacement gas supply system respectively; the inner loop pipe is provided with a pipeline which is connected with the pulverized coal-carrier gas supply system;and the outer loop ring is provided with a pipeline which is connected with an outer loop gasifying agent supply system. The pulverized coal is directly ignited by plasma, an oil burning mode and a gas burning mode in the past can be directly replaced by a coal burning mode, and the starting cost of the dried pulverized coal gasification furnace is lowered; meanwhile, the functions of ignition, work start and operation in an overall process can be finished by only one burner, so that the production difficulty of equipment and the operation complexity are effectively lowered.

Description

technical field [0001] The invention relates to gasification furnace equipment, in particular to a composite burner system of a dry coal pulverized gasification furnace using a plasma ignition device. Background technique [0002] For the gasifier, the traditional feeding method generally adopts coal-water slurry feeding, and then dry coal powder feeding has appeared. Compared with coal-water slurry feeding, dry coal powder feeding has obvious technical advantages and is the future gasification The development trend of furnace feeding method. [0003] But at present, the operation process of dry pulverized coal gasifier is cumbersome and complicated. In the cold state, the ignition burner is first started to ignite the combustible gas emitted by it, and then the ignition burner ignites the start-up burner using fuel oil, and the gas is heated according to the heating curve. When the temperature and pressure reach the working conditions required by the process, the pulve...

AI Technical Summary

Problems solved by technology

For gasifiers that use dry pulverized coal feed, such as Shell gasifiers, in order to meet the needs of different process stages, three burners with different functions must be installed on the gasifier to complete the corresponding work, which causes Not only the number of burners is large, but also the body of the gasifier equipment has many openings, which brings disadvantages to the design, manufacture and safety of the equipment.

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