Environmental protection control method of natural gas annealing furnace
A control method and technology of natural gas, applied in the direction of heat treatment process control, furnace, furnace type, etc., can solve problems such as incomplete combustion of natural gas, emission of exhaust gas particles, pollution, etc., and achieve the effect of avoiding environmental pollution and waste of resources
Active Publication Date: 2020-06-26
SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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Problems solved by technology
[0003] The invention provides an environmental protection control method for a natural gas annealing furnace, which is used to solve the technical problems in the prior art that the natural gas in the annealing furnace is incompletely burned, black smoke occurs, and waste gas particles are discharged into the atmosphere to cause environmental pollution.
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Embodiment 1
[0023] figure 1 It is a schematic flowchart of an environmental protection control method for a natural gas annealing furnace in an embodiment of the present invention. Such as figure 1 As shown, the method includes:
[0024] Step S10: Control the air-fuel ratio, increase the amount of supplemental combustion air in the heating furnace, and stabilize the combustion in the annealing furnace;
[0025] Further, controlling the air-fuel ratio to increase the amount of supplementary combustion air in the heating furnace to stabilize combustion in the annealing furnace includes: adjusting the air-fuel ratio in the non-oxidation heating area to 1.05 during non-production, and adjusting the supplementary combustion system to 1.5.
[0026] Further, adjusting the air-fuel ratio in the non-oxidation heating region to 1.05 during non-production, and adjusting the afterburning system to 1.5 includes: adjusting the air-fuel ratio before the tail of the heated workpiece enters the heating...
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The invention discloses an environment-friendly control method of a natural gas annealing furnace. The environment-friendly control method comprises the following steps of controlling the air-fuel ratio, and increasing the amount of afterburning air in the heating furnace, so as to ensure the stable combustion in the annealing furnace; under the condition of stable combustion in the annealing furnace, controlling the speed, so as to ensure the fluctuating amplitude of heating power; according to the air-fuel ratio and the change of heat absorbing at the surface of a heated workpiece, adjustingthe leading amount of combustion-supporting air, and completely combusting the natural gas; monitoring the heat value data of the natural gas, and controlling the leading amount of combustion-supporting air according to the detected air consumption amount; controlling the combustion reaction conditions, controlling by a furnace pressure system, and completely combusting the remaining natural gasin a post-combustion system. The environment-friendly control method solves the technical problem in the prior art that the natural gas is not completely combusted in the annealing furnace, the blacksmoke emits, and the pollution to environment is caused due to discharge of waste gas particles into atmosphere. The environment-friendly control method has the technical effects that under various production conditions, the natural gas can be completely combusted, and the green running effect is realized; the pollution to environment and the waste of resources under the conditions of fluctuatingof the combustion system and the like are avoided.
Description
technical field [0001] The invention relates to the technical field of environment-friendly production in the iron and steel metallurgy industry, in particular to an environment-friendly control method for a natural gas annealing furnace. Background technique [0002] At present, the open flame heating area of the natural gas annealing furnace is the preheating / non-oxidizing furnace (PF / NOF), which is mainly composed of a burner, a post-combustion system and a smoke exhaust system. The function of PF / NOF is to use the open flame burner to burn natural gas to heat the strip, and the furnace is a non-oxidizing atmosphere to avoid oxidation on the surface of the strip. The preheating furnace is connected to the entrance of the non-oxidizing furnace, and the flue gas produced by the non-oxidizing furnace flows to the exhaust system through the preheating furnace and is exhausted into the atmosphere by the exhaust fan. The preheating furnace uses the high-temperature exhaust g...
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IPC IPC(8): C21D9/56C21D1/26C21D1/52C21D11/00
CPCC21D1/26C21D1/52C21D9/56C21D11/00
Inventor 张伟雷仲存蒋本君张叶成李泽琳蒋自武朱景洋游学昌
Owner SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD