Steam bagasse blowing system of bagasse boiler grate

Abstract

The invention provides a steam bagasse blowing system of a bagasse boiler grate. The steam bagasse blowing system comprises bagasse blowing spray nozzles, air distributing pipes I, air distributing pipes II and a steam collecting pipe. The multiple bagasse blowing spray nozzles are evenly distributed and mounted on the grate and arranged in multiple rows from the furnace front side to the furnacerear side. The air distributing pipes I are mounted below the portions, on the lower portions of the bagasse blowing spray nozzles on the foremost row, of the grate, and the bagasse blowing spray nozzles on the foremost row communicate with the air distributing pipes I through connecting pipes. Each air distributing pipe II is mounted below the portion, on the lower portion between every two rowsof bagasse blowing spray nozzles except for the bagasse blowing spray nozzles on the foremost row, of the grate, the two rows of bagasse blowing spray nozzles are spaced between every two rows of airdistributing pipes II, the two sides of the air distributing pipes II communicate with the bagasse blowing spray nozzles on the two sides of the air distributing pipes II through connecting pipes separately, and each row of air distributing pipes II provide steam for the two rows of bagasse blowing spray nozzles. The air distributing pipes I and the air distributing pipes II communicate with the steam collecting pipe for supplying steam through air conveying pipes and air outflow valves separately. According to the steam bagasse blowing system, bagasse on the boiler grate is blown through thesteam, and the grate is not easily subjected to coking blockage.

Description

technical field [0001] The invention relates to the technical field of boiler equipment, in particular to a steam slag blowing system for a bagasse boiler grate. Background technique [0002] Bagasse is a waste product produced during the sugar manufacturing process, but it is also a valuable fuel energy source. If it is directly discarded as industrial waste, it will not only waste the energy, but also pollute the environment; so at present, bagasse is used as boiler fuel, so that the steam generated by the boiler is used for power supply and steam supply, and finally not only rational use of energy , but also protect the social environment. [0003] However, bagasse has a high moisture content and a low calorific value, resulting in a low melting point of the ash produced by its combustion. This ash can easily block the tuyere on the grate. Coking and heat accumulation on the surface of the grate ultimately affect the service life of the grate. And one kind of fire grat...

AI Technical Summary

Problems solved by technology

[0003] However, bagasse has a high moisture content and a low calorific value, resulting in a low melting point of the ash produced by its combustion. This ash can easily block the tuyere on the grate. Coking and heat accumulation on the surface of the grate ultimately affect the service life of the grate

And one kind of fire grate of existing bagasse boiler is a conventional large-scale fire grate, which is not only complex in structure and high in cost, but also easily cokes and accumulates heat on the surface of the fire grate, resulting in a short service life. Gradually eliminated by the market

The other is the water-cooled grate. Although this kind of grate can reduce its surface temperature through water circulation, thereby prolonging its own service life, it will also reduce the temperature in the furnace, which will cause incomplete drying of bagasse and insufficient combustion. , high carbon content in fly ash and other chain effects, which will lead to a large amount of fly ash and incompletely burned bagasse coking on the grate surface, and block each tuyere, resulting in a very low thermal efficiency of the boiler

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