Preparation technology of straw fuel cake

Abstract

The invention discloses a preparation technology of a straw fuel cake. The technology specifically includes the steps of: straw pulverization, straw precompression, truck loading and transportation, straw rolling into a cake, fuel cake cutting, drying and packaging. The technology can simplify the harvesting and pulverization steps, and reduce energy consumption. Through precompression of the pulverized straw, the cost of straw collection and transportation can be reduced. Use of the straw roller press technology avoids the friction between straw and a grinding tool, thus greatly reducing energy consumption. The preparation technology of the straw fuel cake provided by the invention has the characteristics of low cost, high production efficiency, and continuous and stable production, and can effectively solve the straw disposal problem.

Description

technical field [0001] The invention relates to the technical field of biomass fuel, in particular to a preparation process of straw fuel cake. Background technique [0002] Straw is a renewable biological resource, and during its reuse, the emitted CO 2 CO absorbed during regeneration with biomass 2 To achieve carbon balance, compared to fossil resources with CO 2 The advantage of zero emission has great social benefits under the current social background of advocating low carbon. The calorific value of straw is relatively high. According to the measurement, the calorific value of straw is about 15000kJ / kg, which is equivalent to 50% of standard coal. Moreover, straw is a very good clean and renewable energy source, its average sulfur content is only 3.8‰, the sulfur content of corn straw is lower, and the average sulfur content of coal is about 1%, so straw is used instead of coal in heating boilers The desulfurization link can be omitted. [0003] However, the curren...

AI Technical Summary

Problems solved by technology

[0003] However, the current straw utilization technology is immature. The current straw energy utilization technologies include straw biogas technology, straw coal production, straw pellet fuel, and straw power generation. These technologies have not been recognized by the market and have not been widely used. The main reason is that technology immature

Immature technology increases the difficulty of straw utilization, resulting in unstable product quality, low production efficiency, high production costs, and the inability to promote large-scale

Analysis of the reasons mainly includes three aspects: on the one hand, the cost of collection and transportation is high, the straw is scattered in the field, the yield of straw per mu is small, it is inconvenient to collect, the texture of straw is fluffy, and the bulk density is about 50kg / m3, resulting in a large volume of straw transportation. On the other hand, the cost of straw processing is high, and the processing power consumption of straw fuel pellet technology is now 50kw.h / t; the third aspect is low production efficiency, small scale, high production organization and management costs

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