Method for melting glass using tail gas in coal low-temperature dry distillation production
A technology of melting glass and exhaust gas, which is applied in the field of melting glass to achieve the effects of high calorific value, reduced equipment investment, and no impurities
Inactive Publication Date: 2013-04-03
YULIN HUABAO SPECIAL GLASS IND
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[0006] So far, there is no public information report on the use of this exhaust gas for melting glass
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[0025] The coal gas used in the present invention is the tail gas in the production process of low-temperature dry distillation of coal (blue coke). The gas-gathering temperature of the tail gas is 80-90° C., which belongs to flammable and explosive gas; the main components are as follows: CO 18-26%, H 2 18-26%, CH 4 6-10%, CO 2 5.5~6.5%, O 2 0.2~1.0%, N 2 35~45%, heat value 1800~2200kcal / m 3 . The above-mentioned gas components are measured with an Austrian gas analyzer, and the contents of each component obtained after the measurement are substituted into the formula to calculate the low-level calorific value of the gas, which is a well-known prior art.
[0026] like figure 1 Shown, utilize the tail gas melting glass method in the coal low-temperature dry distillation (blue carbon) production, comprise steps as follows:
[0027] 1) Coal is input into dry distillation coking furnace I through coal loading system IV, and semi-coke is processed and produced under the...
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Abstract
The invention discloses a method for melting glass by using tail gas in coal low-temperature dry distillation production. The method comprises the following steps of: (1) feeding the tail gas which is collected at the top of a dry distillation coke oven to an electrical tar precipitator for oil removal and purification through a gas collector pipe to form a clean coal gas; (2) allowing the clean coal gas of the step (1) to enter a glass melting furnace through a coal gas pipe which is connected with the glass melting furnace under the pressure applied by a blower, and pushing the clean coal gas to flow through a coal gas exchanger and a coal gas flue in sequence and then enter a coal gas heat storage chamber in which the clean coal gas is heated to 800 DEG C to 1200 DEG C, wherein the pressure applied by the blower is 500 Pa; (3) allowing the heated clean coal gas of the step (2) to enter a small pre-combustion chamber through the top of the coal gas heat storage chamber and mix with the air in the small pre-combustion chamber, transferring the resulting mixture to a molten glass tank and combusting to melt mixed ingredients of glass. The glass melting furnace used in the method is modified based on the existing furnace process using the producer as the fuel, can effectively utilize the tail gas generated during the coal low-temperature dry distillation (blue-coke) production process, the problems of energy waste and environmental pollution due to the tail gas emission can also be solved, and the method is suitable for generalization and application.
Description
technical field [0001] The invention relates to a method for melting glass, in particular to a method for melting glass by utilizing the tail gas in the production of low-temperature dry distillation of coal (blue charcoal). Background technique [0002] At present, in the glass production industry, the fuels used for melting glass include heavy oil, coal tar, petroleum coke, natural gas, producer gas, coke oven gas, pure oxygen combustion and electric melting. Each fuel corresponds to a different kiln structure and combustion process. With the world's energy shortage and crisis, the price of fuel remains high, resulting in high costs and low benefits for enterprises, which reduces the market competitiveness of enterprises. [0003] In traditional glass production, producer gas is usually used to melt glass; producer gas is a fuel produced by gasifying coal in a gasifier, and special equipment is required for melting glass. The gas is hot gas with a temperature of 500-550°...
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IPC IPC(8): C03B5/235
CPCC03B5/235
Inventor 崔保玉王建治靳宏宽闫建军
Owner YULIN HUABAO SPECIAL GLASS IND