Method for applying membrane oxygen enrichment technology in roller kiln

A roller kiln and oxygen-enriched technology, applied in the field of ceramic production, can solve the problems of prolonged firing cycle, large lateral temperature difference in the kiln, and reduced combustion-supporting air inlet pressure, so as to achieve reduced flue gas emissions and uniform lateral furnace heat, and the effect of improving combustion efficiency

Inactive Publication Date: 2009-06-03
王儒林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Membrane oxygen enrichment technology has simple equipment, convenient operation, safety, fast start-up, no pollution to the environment, and remarkable energy-saving effect. Driven by the driving force, oxygen can pass through the membrane preferentially, so as to obtain oxygen-enriched air with high oxygen concentration and relatively low nitrogen content, which can be added to the combustion system to improve combustion efficiency. Existing applications, because the production of ceramics in roller kilns has relatively strict requirements on combustion conditions and temperature distribution, so the successful application of membrane oxygen enrichment technology in roller kilns has not been reported or published
The existing roller kiln...

Method used

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  • Method for applying membrane oxygen enrichment technology in roller kiln
  • Method for applying membrane oxygen enrichment technology in roller kiln
  • Method for applying membrane oxygen enrichment technology in roller kiln

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take the 130-meter-long roller kiln of Yimen Yida Ceramics Co., Ltd. as an example. The roller kiln is divided into 60 sections, each section is 2.16 meters long. Oxygen-enriched air with an oxygen concentration of 32% is prepared under the action of the air pump, and the oxygen-enriched air is sent to the gas-water separation system, the dehumidification system, and enters the pressure stabilization system, and finally preheated by the heater, and passed through the oxygen-enriched nozzle along the roller The road kiln is sent longitudinally to the upper and lower layers of the fired ceramic bricks; gas is used as fuel, and the gas intake direction is perpendicular to the oxygen-enriched air intake direction, and the gas uses divergent gas burners distributed on both sides of the kiln body (1) Spray into the kiln at high speed, use thermocouples distributed in different boxes to detect the temperature in the kiln at any time, and transmit the signal to the regulator (3)...

Embodiment 2

[0028] Taking the 97-meter-long roller kiln of Yimen Yida Ceramics Co., Ltd. as an example, the specific application method of the membrane method oxygen enrichment technology is the same as that in Example 1. After the method of the present invention is used to realize membrane method oxygen enrichment, the temperature of each place in the kiln is as follows:

[0029]

[0030] The technical indicators and data are as follows:

[0031] Oxygen-enriched air flow: 1200NM 3 / h, output: 5500m 2 / day; the minimum inlet pressure of oxygen-enriched air is reduced to 0.2MPa, and the gas consumption is 5100m 3 / day, the size deviation of fired products is less than 1 silk.

[0032] Before adopting the non-membrane oxygen enrichment technology, the temperature of each place in the kiln is as follows:

[0033]

[0034] The technical indicators and data are as follows:

[0035] Combustion air flow: 4800NM 3 / h, output: 3500m 2 / day; the minimum intake pressure of combustion air...

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Abstract

The invention discloses a method for applying the membrane oxygen enrichment technology in a roller kiln, which is realized through the technical scheme: air is pumped by air input blower through a filter into an oxygen enrichment membrane device, and is transformed into oxygen enriched air under the action of pressure difference; the oxygen enriched air is sent by an air pump to a gas-water separation system and a dehumidification system, then enters a pressure stabilizing system, and finally after being preheated by a heater is sent by an oxygen enrichment nozzle to the upper layer and the lower layer of the manufactured ceramic tile; combustible gas is taken as fuel; the air input direction of the gas fuel is vertical to the air input direction of the oxygen enriched air; the gas fuel is distributed in burner high-speed injection kilns on two sides of the kiln body; and thermocouples distributed in different box bodies are used for testing the temperature in the kiln furnace when necessary, and sending signals to an adjustor which makes comparison between the signals and data set in advance, and issues instructions to an electric actuator to control the divergence of a combustible gas adjusting valve, thereby adjusting the feeding amount of the combustible gas to ensure that the temperature in the kiln remains at the required level.

Description

technical field [0001] The invention relates to the field of ceramic production, and more specifically relates to a method for applying membrane oxygen enrichment technology in a roller kiln. Background technique [0002] Roller kiln is a key equipment commonly used in the field of ceramic production. It generally adopts a double-layer kiln type, with heat-resistant rollers radiating in the middle, and transmission methods include chain drive, gear drive, etc. Controlling the combustion of roller kilns is directly related to the quality of ceramic products, the amount of energy consumed and the impact on the environment. Since the oxygen in ordinary air only accounts for 20.94%, and nitrogen accounts for 78.09%, the oxygen content in high altitude areas is even lower. To improve the combustion efficiency, a large amount of combustion-supporting air needs to be introduced during the combustion process, but only about 1 / 5 of the total air is actually involved in the combustion...

Claims

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Application Information

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IPC IPC(8): C04B35/64
CPCY02E20/34
Inventor 王儒林杨绍荣陈再兴
Owner 王儒林
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