A biomass combustion utilization method for docking boilers and heat exchangers

Abstract

A biomass combustion utilization method for docking boilers and heat exchangers, comprising the following steps: (1) preliminary cracking; (2) feeding combustion; (3) steam combustion. Biomass raw materials are initially cracked, tar is precipitated, and biomass fuel with low tar content is obtained, which effectively avoids the occurrence of coking in the furnace, effectively reduces the number of shutdowns to clean the slag, improves work efficiency and prolongs equipment life. At the same time, steam is injected into the furnace through the steam generator to support combustion. According to the test, the flame temperature of the crater of an ordinary biomass burner is below 800°C. Under the same feed amount and ventilation rate, the flame temperature of the crater flame is about 100°C higher than that of the crater without water vapor. The combustion flame of the present invention is sprayed out through the crater, and connected to boilers, heat exchangers, heating and heating systems, thermal generators and other heat utilization equipment for heating and utilization, not limited to boiler heating, and can be widely used in various heating systems with open flames. required equipment.

Description

technical field [0001] The invention relates to a combustion method, in particular to a biomass combustion utilization method for connecting boilers and heat exchangers. Background technique [0002] Biomass fuel, as an important direction of new energy development, has received more and more attention. It is mostly obtained from stem crops through processing. Generally, the dry basis of biomass burning has a water content of less than 10%~15%, an ash content of less than 1.5%, a sulfur content and a chlorine content of less than 0.05%, and a nitrogen content of less than 0.5%. It is an ideal renewable energy source with a wide range of sources. It can be derived from industrial, agricultural, forest and domestic waste. In the world's current energy consumption, biomass fuel consumption accounts for about 14% of the world's total energy consumption, while in developing countries, biomass fuel (mainly corn, wheat, rice straw, rice husk, straw, wood, etc.) The larger proport...

AI Technical Summary

Problems solved by technology

However, the traditional biomass burner is easy to coke, block the pipes, accumulate in the lower part of the furnace and block the screen under the furnace during the combustion process, so that it needs to stop the furnace frequently to clear the slag and re-ignite, and cannot work continuously and stably

This kind of biomass combustion utilization method has problems such as easy coking in the biomass burner, low combustion utilization efficiency and discontinuous stability.

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