Lignite-drying and quality-improving process for preparing superheated steam from waste heat steam

A superheated steam and hot steam technology, applied in the direction of steam superheating, heating to dry solid materials, steam generation, etc., can solve the problems of hidden danger of fire or explosion, uneconomical heat source, etc. Effects of explosion hazard

Inactive Publication Date: 2010-12-15
沈阳清井环保机械工程有限公司
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Problems solved by technology

[0004] The object of the present invention is to provide a lignite drying and upgrading process using waste heat gas to prepare superheated steam, which effectively solves the problem of drying low-grade low-calorific value fuel resources and adopts superhe

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  • Lignite-drying and quality-improving process for preparing superheated steam from waste heat steam
  • Lignite-drying and quality-improving process for preparing superheated steam from waste heat steam

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[0034] according to Figure 1~8 The specific process steps of the present invention are described in detail. In order to achieve the ideal drying and upgrading effect, the lignite drying and upgrading process using waste heat steam to prepare superheated steam adopts a thermal energy device that provides heat exchange medium to produce superheated steam from waste heat steam that is specially designed according to actual use requirements and possible. And an improved energy-saving drum lignite drying and upgrading device based on the original structure of the "Double-pass drum dryer" with the announcement number CN100573003C and the "Three-pass drum dryer" with the announcement number CN100570253C designed by the inventor 8. Therefore, it can ensure that the process design of the present invention is reasonable, and the route is simple and smooth. Of course, other thermal energy devices and drying devices with similar functions can also be used according to user needs to repla...

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Abstract

The invention relates to a lignite-drying and quality-improving process for preparing superheated steam from waste heat steam. The process comprises the following operation steps of: firstly, providing a heat source for a heat energy device for preparing the superheated steam from the waste heat steam by using high-temperature flue gas produced by a hot-blast stove; secondly, recycling, purifying and refining waste heat steam produced by a normally-running energy-saving cylindrical lignite-drying and quality-improving device; thirdly, preparing high-temperature superheated steam by using the heat energy device for preparing the superheated steam from the waste heat steam; fourthly, drying wet-based lignite and improving quality by using the energy-saving cylindrical lignite-drying and quality-improving device; and finally, recycling the waste heat steam produced in a drying process by the recycling, purifying and refining steps. The process uses the waste heat steam to dry the lignite and has the characteristics of reasonable design and simple, convenient and smooth route. The device has the characteristics of optimized design, compact structure, small floor area, a small amount of investment, low running cost, high yield, large dehydrating range, safe running, energy conservation, capability of saving power, lowering consumption and reducing emission, wide application range of quality-improved lignite and the like.

Description

technical field [0001] The invention provides a drying and upgrading process for low calorific value fuels, especially a lignite drying and upgrading process using waste heat gas to prepare superheated steam, which is not only suitable for drying and upgrading lignite and other low calorific value fuel resources, It is also suitable for drying and upgrading low-viscosity materials of different shapes and properties in food processing industry, meat processing industry, pharmaceutical industry, industry, agriculture, light industry, chemical industry, aquatic product processing industry and military industry. All kinds of drying machinery and equipment for body resources. Background technique [0002] my country has abundant reserves of lignite resources, but high-quality coal resources such as bituminous coal and anthracite are scarce. High-moisture moisture-based lignite can only be widely used after drying and upgrading. For this reason, enterprises such as domestic coal ...

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Application Information

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IPC IPC(8): F26B3/02F26B21/00F22G1/00F22G3/00
Inventor 洪武贵李相荣
Owner 沈阳清井环保机械工程有限公司
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