Glass fiber kiln pure oxygen combustion system and control method thereof

Abstract

The invention relates to a glass fiber kiln pure oxygen combustion system and a control method thereof. The system is applied to a glass fiber kiln combustion device and comprises a natural gas pipeline, an oxygen pipeline, a combustor and a glass fiber kiln, the natural gas pipeline and the oxygen pipeline are connected to the combustor, and the combustor is connected to the glass fiber kiln. The system is characterized by further comprising an electric natural gas regulating valve, a natural gas flowmeter, an electric oxygen regulating valve, an oxygen flowmeter, a thermocouple and a main controller. The control method comprises the steps of constant flow control, constant temperature control and ratio control. According to the glass fiber kiln pure oxygen combustion system and the control method thereof, the working efficiency is improved, the working intensity is lowered, the glass solute temperature is increased to accelerate glass melting, the heat efficiency is improved, and erosion on a refractory material is slowed down; heat brought by exhaust gas, harmful gas and dust are greatly reduced, glass foam dust can be reduced through in-time regulation, and then the glass fiber quality is improved.

Description

technical field [0001] The invention relates to a pure oxygen combustion system of a glass fiber kiln and a control method thereof, which are applied to a combustion device of a glass fiber kiln. Background technique [0002] The traditional fiberglass kiln melts raw materials through the heat generated by natural gas combustion in the kiln cavity. The air-mixed combustion is limited to 21% of the oxygen in the air for combustion, and the rest of the gas not only does not participate in the combustion, but also carries away heat and generates harmful nitrogen oxides and other exhaust gases. Energy The utilization rate is low and easy to cause pollution. [0003] With the development of modern industry, the demand for fuel is increasing, and the corresponding combustion products are increasingly polluting the environment. The non-renewability of fossil combustion has led to a rapid rise in fuel prices, forcing people to actively try to reduce or eliminate ineffective heating...

AI Technical Summary

Problems solved by technology

[0005] However, in actual operation, due to the existence of objective problems such as uneven batching of the feeder, the temperature value of the point to be measured in the kiln will fluctuate greatly.

In the prior art, only manual regulating valves are installed in the on-site combustion substations, without flow meters and automatic regulating valves, and control and regulation cannot be realized. The background technology has the following disadvantages:

[0006] 1) When the melting industry observes that the temperature value exceeds the process requirements, it is necessary to manually adjust the manual control valve on site to change the flow rate of natural gas and oxygen to achieve the purpose of changing the combustion temperature. This technology has slow response, low precision, and high operating intensity. question

[0007] 2) According to the composition characteristics of natural gas, oxygen and natural gas need to be in a certain ratio (approximately 2.1 to 1) to fully burn; since the two combustion sub-stations have no flow control, the melting industry adjusts the ratio of the two by visually observing the combustion flame. It is likely to cause a ratio imbalance and reduce combustion efficiency

The technical solution described in the above-mentioned patent is only an improvement on a single burner assembly, and cannot solve the purpose of the present invention

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