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A kind of energy-saving rotary kiln

A technology of rotary kiln and conveying pipe, which is applied in the field of rotary kiln, can solve the problems of high cost and reduce production cost, and achieve the effect of reducing fuel cost and production cost

Active Publication Date: 2015-10-28
GUIZHOU ANKAIDA IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the agreement price and the ratio of 4:6, the cost of a ton of ash needs to be 180 yuan per ton of ash. Long-term use will lead to high costs. How to reduce production costs in the production process has always been a problem that researchers are working on.

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  • A kind of energy-saving rotary kiln

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Embodiment Construction

[0012] The technical solutions in the present invention are clearly and completely described below, obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0013] Such as figure 1 Shown: an energy-saving rotary kiln, including a rotary kiln body 1, a burner 2 is provided on the rotary kiln body 1, a gas delivery pipe 3 and a pulverized coal delivery pipe 4 are connected to the burner 2, the coal Both sides of the powder conveying pipe inlet 41 are respectively provided with a pulverized coal conveying fan and an air conveying fan for conveying air to the rotary kiln; 31, the diameter of the delivery pipe main body 31 is 700-900mm, and the cross-sectional area of ​​the outer port 33 of the necking section 32 is 19000...

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Abstract

The invention provides an energy-saving rotary kiln, belonging to the field of a rotary kiln. The energy-saving rotary kiln comprises a rotary kiln body, wherein the rotary kiln body is provided with a combustor; the combustor is connected with a gas transmission pipe and a pulverized coal transmission pipe; the gas transmission pipe is a reducer pipe and comprises a transmission pipe main body and a necking down section of which the diameter is smaller than the diameter of the transmission pipe main body; the pipe diameter of the transmission pipe main body is 700-900mm; and the cross sectional area of an external port of the necking down section is 190000-220000mm<2>. Compared with the prior art, the energy-saving rotary kiln has the beneficial effects that with the adoption of the structure, multifuel combustion of converter gas and pulverized coal can be used, so that the production cost can be greatly lowered.

Description

technical field [0001] The invention relates to a rotary kiln, in particular to an energy-saving rotary kiln. Background technique [0002] Generally, the fuel used in the rotary kiln is co-fired coke oven gas and converter gas; the calorific value of coke oven gas is 4200kcal / Nm3; the calorific value of converter gas is 1600kcal / Nm3; the calorific value of mixed gas is 2600kcal / Nm3; Gas 11538Nm3 / h. Among them: coke oven gas accounts for 40% and is 4615Nm3 / h; converter gas accounts for 60% and is 6923Nm3 / h. The tax-included price of coke oven gas is 819 yuan / thousand liters, and the tax-included price of converter gas is 105 yuan / thousand liters. According to the agreement price and the ratio of 4:6, the cost of a ton of ash needs to be 180 yuan per ton of ash. Long-term use will lead to high costs. How to reduce production costs in the production process has always been a problem that researchers have been working on. Contents of the invention [0003] The invention pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D17/00F27B7/34
Inventor 张庆易飞舟赵永宽杨飚方明亮方振崔明伟沈记君
Owner GUIZHOU ANKAIDA IND