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A method and device for preparing water coke slurry with semi-coke
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A water-coke slurry and semi-coke technology, which is applied in the field of semi-coke preparation of water-coke slurry, can solve problems such as the difficulty in realizing the industrial scale-up of semi-coke pulp
Active Publication Date: 2019-10-29
ENN SCI & TECH DEV
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[0004] The main purpose of the present invention is to provide a method and device for preparing water coke pulp with semi-coke, which solves the problem that it is difficult to realize the industrial scale-up of semi-coke slurry in the prior art, and creates a new era for the large-scale and efficient utilization of semi-coke. condition
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Embodiment 1
[0048] Embodiment 1 of the present invention provides a method for preparing water coke slurry with semi-coke, see figure 1 ,include:
[0049] Step 1) dry-grinding semi-coke into powder to obtain semi-coke powder with a preset particle size;
[0050] Among them, semi-coke is a kind of porous fine powder produced after coal pyrolysis or gasification. Exemplarily, the particle size of hydrogenated gasification semi-coke is mostly 50-60 microns, and the porosity can reach more than 80%. When the semi-coke is directly slurried, on the one hand, the hydrophobicity of the semi-coke is extremely high, making it difficult to directly slurry; on the other hand, the prepared hydrocoke slurry has certain requirements on particle size; therefore, the Before semi-coke is made into slurry, it is necessary to break the pore structure of semi-coke to obtain semi-coke powder with a preset particle size, so as to reduce the hydrophobicity of semi-coke and meet the slurrying requirements of sem...
Embodiment 2
[0075] Embodiment 2 of the present invention provides a device for preparing semi-coke pulp with semi-coke, which is applied to the above-mentioned method, see image 3 ,include:
[0076] Semi-coke mill 1, semi-coke feeder 2, slurry tank 3 and return pump 4;
[0077] Wherein, the top of the pulping tank 3 is provided with a semi-coke feed inlet 31, a water inlet 32, an additive inlet 33 and a material return port 34, and the bottom of the pulping tank 3 is provided with a first discharge port 35, so A stirring device 5 is arranged in the pulping tank 3;
[0078] The feeding port of the semi-coke mill 1 communicates with the feeding port of the semi-coke feeder 2, and the semi-coke feeding port 51 is located below the semi-coke feeder 2, and is connected to the semi-coke feeder 2. The discharge port of the semi-coke feeder 2 is connected, the input end of the return pump 4 is connected with the first discharge port 35 , and the output end is connected with the return port 34 ...
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Abstract
The invention relates to the technical field of semi-coke pulping, in particular to a method and device for preparing water-coke slurry with semi-coke. It solves the problem in the prior art that it is difficult to realize the industrial scale-up of semi-coke pulping, and creates conditions for large-scale and high-efficiency utilization of semi-coke. An embodiment of the present invention provides a method for preparing water-coke slurry with semi-coke, comprising: step 1) dry-grinding semi-coke into powder to obtain semi-coke powder with a preset particle size; step 2) continuously grinding semi-coke powder, water and additives are added into the pulping tank according to the ratio, and mixed under stirring. At the same time, the mixed liquid is continuously beaten back to the liquid surface at the first flow rate to break up and moisten the semi-coke powder floating on the liquid surface. Wet, so that the semi-coke powder, water and additives are continuously mixed into a slurry. The embodiment of the present invention is used for the preparation and production of water coke slurry.
Description
technical field [0001] The invention relates to the technical field of semi-coke pulping, in particular to a method and device for preparing water-coke slurry with semi-coke. Background technique [0002] Coal-water slurry is a coal-based fluid fuel that can be transported by pipelines through physical processing of coal, water and additives. It can be used for combustion and gasification. Compared with traditional coal utilization methods, it has low pollution and high The advantage of efficiency. Semi-coke is a solid product with no volatile matter and high carbon content obtained under the conditions of coal pyrolysis or incomplete gasification. It has a slurry-forming property similar to that of coal. A way of efficient utilization, while also being able to provide energy or raw materials for upstream processes. [0003] The existing coal slurry technology is mainly wet grinding slurry, that is, after mixing coal with a particle size of less than 20mm with water and ad...
Claims
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