Method and device for preparing gas by large-scale grinded and squeezed straws and broken coal granules instead of lump coal and coke

Abstract

The invention provides a method and a device for preparing gas by large-scale grinded and squeezed straws and broken coal granules instead of lump coal and coke. A grinding and squeezing hole plate is internally provided with a grinding groove and three rows of squeezing holes. In order to achieve high-yield capacity, the depth of the grinding groove is designed to be 15-25mm, and the width of the grinding groove is designed to be matched with the thickness (width) of a grinding wheel; the broken straws and broken coal are uniformly rotated, grinded and cut in the groove; the groove is internally provided with three rows or multiple rows of squeezing holes; the space between the upper row and the lower row of outer squeezing holes is 4-6mm; the squeezing holes of the same diameter are arranged at the tangential position of the radius of middle staggered round holes; and the number of rollers blocked by the straw and the broken coal is reduced. Not only are the effective discharge areas of the squeezing holes increased, but also the discharge yield of granules formed by the broken straw of the squeezing holes is also improved; and the efficiency of granulators of six groups of grinding wheels is improved by ten times.

Description

technical field [0001] Straw, branches, and crushed coal are made into particles to replace lump coal and coke to prepare environmentally friendly and energy-saving gas and reduce smog. It is a large-scale crushed straw, crushed coal particles to replace lump coal, and coke to prepare gas and equipment. technical background [0002] Take straw incineration power generation as an example: the existing straw, branches, and plant stems are used in industrial boilers, and straw biomass power generation is at a standstill and inefficient operation, resulting in a large amount of straw, branches, and plant stems that cannot be better utilized . The main reason is that straw granules are required to be molded once in a deep hole that is more than 5 times the diameter of the extrusion hole in the machine. Due to the high frictional resistance, the output is inefficient and the cost is high. Take a granulator with an actual output of 300kg / h as an example: 48 1 extrusion hole, hole...

AI Technical Summary

Problems solved by technology

[0002] Take straw incineration power generation as an example: the existing straw, branches, and plant stems are used in industrial boilers, and straw biomass power generation is at a standstill and inefficient operation, resulting in a large amount of straw, branches, and plant stems that cannot be better utilized

The main reason is that straw granules are required to be molded once in a deep hole that is more than 5 times the diameter of the extrusion hole in the machine. Due to the high frictional resistance, the output is inefficient and the cost is high. Take a granulator with an actual output of 300kg / h as an example: 48 1 extrusion hole, hole diameter more than 20 millimeters, hole depth and length more than 180mm, occupying 4 people, motor power 30KW, 8 hours for a shift calculation; output 0.3 tons / h×8h=2.4 tons, electricity cost 30KW× 8h=240KWh, 240KWh×0.7 yuan / KWh,=168 yuan, salary 100 yuan / worker×4 people=400 yuan, equipment depreciation 30 yuan / ton×2.4 tons=72 yuan, total processing cost: electricity 168 yuan + salary 400 Yuan + depreciation 72 yuan / 2.4 tons = 266 yuan / ton

Seen from this: the low processing output is not suitable for a large number of industrial fuels to use, and the high processing cost forms an obstacle to the comprehensive utilization of stalks

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