Sludge synthesized fuel and preparation method thereof
A technology for synthesizing fuel and sludge, which is applied in the field of sludge synthesis as fuel and the formula ratio of sludge synthetic fuel, can solve the problem of unfavorable consumption of water-containing sludge to save raw coal, large content of raw coal in sludge synthetic fuel, and utilization of water-containing sludge. problems such as low rate of combustion, achieving excellent combustion conditions and environmental protection performance, reducing the use of raw coal, and small footprint
Active Publication Date: 2013-01-30
大荔楷华新能源科技有限公司
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Problems solved by technology
[0003] The invention provides a formula ratio of sludge synthetic fuel and its preparation method, which solves the problems of high water content, low utilization rate of hydrous sludge and high utilization rate of raw coal in the prior art. It is not conducive to the large consumption of water-containing sludge and the saving of raw coal, and the obtained sludge synthetic fuel also has technical problems such as large raw coal content, high cost, and poor low-carbon environmental protection performance
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[0022] The mechanism of the present invention is as follows: in the sludge synthetic fuel, the sludge contains a large amount of organic matter, and the volatile matter on a dry basis is as high as 60-70%, so it can be used as fuel; but the sludge contains a large amount of water, and the untreated sludge of the sewage treatment plant The water content is generally 80-98%, and the sludge is used as fuel, and the water content needs to be reduced. There are many ways of dehydration, including drying, drying in the sun, mechanical dehydration, and dehydration by adding a dehydrating agent. The cost of drying is high, and the method of drying in the sun is inefficient and takes up a large space. Although the method of mechanical dehydration is high in efficiency, it also has certain limitations, that is, there is a large amount of bound water in the hydrous sludge, and mechanical dehydration alone can only The moisture content drops to about 70%.
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The invention relates to a sludge synthesized fuel and a preparation method of the sludge synthesized fuel, which solve the following technical problems in the prior art: the moisture content prepared by the water-containing sludge is high, the use ratio of the water-containing sludge is low, the use ratio of the raw coal is high, a plurality of water-containing sludge is adverse to consume and the raw coal is adverse to save, and the obtained sludge synthesized fuel is high in content of raw coal, high in cost and bad in low carbon environmental performance. The sludge synthesized fuel is prepared from the sludge with moisture content of 10 to 98%, a combustion improver and a heat value improver, wherein the content of the sludge is 10 to 90% by weight, the combustion improver is 1 to 81%, and the rest is the heat value improver. The agricultural and forestal residues are utilized for effectively reducing the moisture content of the sludge mixture, carry out sulfur fixation, increase the heat value, and greatly reduce the sludge treatment cost; furthermore, the use ratio of the sludge is high, the heat value of the obtained sludge synthesized fuel is high, the cost is low, the waste is turned into wealth, and the combustion conditions and the environmental performance are excellent; and the coal dust or illegal cooking oil is added to further improve the heat value of the sludge fuel.
Description
technical field [0001] The invention relates to the field of sludge synthetic fuel, in particular to the formula ratio of sludge synthetic fuel and a process for synthesizing sludge produced by urban industrial and domestic sewage treatment plants into fuel. Background technique [0002] The water-containing sludge produced by urban sewage treatment plants can be used as fuel, but it is generally believed that the sludge can be made into synthetic fuel only at a low moisture content, so it is necessary to increase the degree of sludge dehydration, and the process is complicated and the cost is high; On the other hand, in the proportioning and preparation process of the existing sludge synthetic fuel, the utilization rate of water-containing sludge is low, and the utilization rate of raw coal is high, which is not conducive to a large amount of water-containing sludge consumption and saving of raw coal, and the obtained sludge synthetic fuel is also poor. Because of the large...
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Login to View More IPC IPC(8): C10L5/46C10L9/10
CPCY02E50/30Y02E50/10
Inventor 苏武民苏韶华
Owner 大荔楷华新能源科技有限公司