Control method and control system for combustion temperature of low calorific value gas
A technology of gas combustion and control method, which is applied in the control of combustion, lighting and heating equipment, etc., can solve the problems of low heat utilization rate, inability to accurately control the ratio of air and low calorific value gas, etc., so as to improve utilization rate and heat the effect of the utilization
Inactive Publication Date: 2014-05-07
重庆紫光新科化工开发有限公司
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Problems solved by technology
[0005] The inventor found that the existing temperature control method for the combustion furnace cannot accurately control the ratio of air and low calorific value gas, and the heat utilization rate is low
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[0030] As mentioned in the background technology section, the existing temperature control method for the combustion furnace cannot accurately control the proportion of air and low calorific value gas, and the heat utilization rate is low.
[0031] It is necessary to precisely control the proportion of low calorific value gas and air, so that the low calorific value gas is in the best combustion state, at a higher temperature when the equipment is under load, and the heat utilization rate is improved.
[0032] Based on the above research, the present invention provides a method for controlling the combustion temperature of low calorific value gas, the low calorific value gas includes but not limited to tail gas in industrial production systems, and is used to control the combustion temperature of low calorific value gas in a combustion furnace. The control method includes: collecting the combustion temperature of the low calorific value gas in the combustion furnace;
[0033] ...
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The invention discloses a control method and a control system for the combustion temperature of low calorific value gas. The control method comprises the following steps: collecting the combustion temperature of low calorific value gas in a combustion furnace; comparing the temperature value collected currently with the temperature value collected previously; adjusting air flow according to the temperature change, if the temperature rises, increasing the air flow, and if the temperature lowers, reducing the air flow. The control method can be used for controlling the air flow according to the temperature in the combustion furnace, so that the content of the low calorific value gas and air in the combustion furnace are controlled to obtain the best combustion ratio of the low calorific value gas, and the utilization ratio of heat is increased. The control system is based on the control method. The utilization ratio of the heat can be increased by adopting the control system to control the combustion temperature of the low calorific value gas.
Description
technical field [0001] The invention relates to the technical field of temperature control, and more specifically, to a method and system for controlling the combustion temperature of low calorific value gas. Background technique [0002] In chemical production systems, many production tail gases are low calorific value gases, which have certain heat recovery value. In order to improve energy utilization and reduce environmental pollution, combustible tail gas needs to be combusted to utilize the heat generated in the combustion process and eliminate polluting gases in the tail gas. [0003] The combustion furnace can be used to burn exhaust gas and produce steam. Its water-holding part is generally called a pot, and its heating part is generally called a furnace. The burner in the exhaust gas boiler is the core part of steam production. The exhaust gas is mixed with air in the burner, ignited at the outlet and burned in the furnace to utilize the heat generated during the...
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IPC IPC(8): F23N5/00
Inventor 廖成明马久全代明阳夏兵
Owner 重庆紫光新科化工开发有限公司