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Preparation method of polar polymer type coal water slurry additive and residual carbon separation method

A polymer type, coal-water slurry technology, applied in the field of coal chemical industry, can solve the problem of large use of flotation agents such as oil, and achieve the effect of increasing the charge capacity and improving the separation efficiency.

Pending Publication Date: 2022-03-11
WANHUA CHEMICAL (NINGBO) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned patents are also the application of wet separation of carbon residues from gasification fine residues. The use of flotation agents such as oil is relatively large, and the problem of wastewater treatment is also involved. Therefore, it is necessary to separate carbon residues from fine residues by dry method. Technological breakthroughs and solutions to reduce the cost of use and wastewater treatment

Method used

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  • Preparation method of polar polymer type coal water slurry additive and residual carbon separation method
  • Preparation method of polar polymer type coal water slurry additive and residual carbon separation method
  • Preparation method of polar polymer type coal water slurry additive and residual carbon separation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A ceramic cuboid reactor with an aspect ratio of 3 is placed horizontally, and a set of DC high voltage electrodes are placed inside the two square planes of the reactor. An aqueous solution of polyethylene glycol (number average molecular weight: 800) with a concentration of 10 wt% was placed in a cuboid reactor. An aqueous solution of adipic acid having a concentration of 10 wt % solubility was added to the aqueous polyethylene glycol solution. The mass ratio of polyethylene glycol to adipic acid is 20 / 80. The mixed solution was ultrasonically treated for 1 hour, and the power was selected at 1.5 kw; 1 wt% concentrated sulfuric acid relative to polyethylene glycol was added into the reactor every 30 minutes to obtain a mixed solution.

[0056]A layer of DuPont Nafion-NR211 cation selective permeation membrane was installed in the middle of the reactor, and the pH value of the mixed solution was adjusted to 7 by adding ammonia water. Turn on the high-voltage electrod...

Embodiment 2

[0060] A ceramic cuboid reactor with an aspect ratio of 5 is placed horizontally, and a set of DC high-voltage electrodes are placed inside the two square planes of the reactor. An aqueous solution of polyethylene glycol (with a number average molecular weight of 4000) at a concentration of 12 wt % was placed in a cuboid reactor. An aqueous solution of adipic acid having a concentration of 15% by weight of solubility was added to the aqueous polyethylene glycol solution. The mass ratio of polyethylene glycol to adipic acid is 30 / 70. The mixed solution was ultrasonically treated for 2 hours, and the power was selected as 2kw; every 40 minutes, 3 wt% concentrated sulfuric acid relative to polyethylene glycol was added into the reactor to obtain a mixed solution.

[0061] Two layers of DuPont Nafion-NR211 cation-selective permeable membranes were installed in the middle of the reactor, and the pH value of the mixed solution was adjusted to 7 by adding sodium hydroxide. Turn on ...

Embodiment 3

[0065] A ceramic cuboid reactor with an aspect ratio of 6 is placed horizontally, and a set of DC high voltage electrodes are placed inside the two square planes of the reactor. An aqueous solution of polyethylene glycol (with a number average molecular weight of 5000) at a concentration of 15 wt % was placed in a rectangular parallelepiped reactor. An aqueous solution of adipic acid having a concentration of 20 wt % solubility was added to the aqueous polyethylene glycol solution. The mass ratio of polyethylene glycol to adipic acid is 40 / 60. The mixed solution was ultrasonically treated for 3 hours, and the power was selected as 3kw; every 50 minutes, 5 wt% concentrated sulfuric acid relative to polyethylene glycol was added into the reactor to obtain a mixed solution.

[0066] Three layers of DuPont Nafion-NR211 cation selective permeation membranes were installed in the middle of the reactor, and the pH value of the mixed solution was adjusted to 7.5 by adding ammonia wat...

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Abstract

The invention discloses a preparation method of a polar polymer type coal water slurry additive and a residual carbon separation method. The additive capable of carrying a high charge number is prepared, the additive is screened and then adsorbed to inner pore channels of gasified fine slag to be electrified, effective separation of the fine slag and residual carbon is achieved in electric separation equipment according to the residual carbon conduction principle, the residual carbon content in the fine slag is increased, the utilization value of the residual carbon can be improved, resource recycling is achieved, and the economic benefit is increased. And resource waste and carbon emission are reduced.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a coal water slurry additive and its application in the electric separation of gasification fine slag and residual carbon. Background technique [0002] Raw coal is still the main raw material in the chemical industry. Whether it is coal-water slurry gasification or pulverized coal gasification, due to the limited residence time in the gasifier, unreacted carbon residues will always be carried out of the gasifier with the process gas. , and finally discharged from the system in the form of gasified fine slag. The residual carbon content in gasification fine slag is 20-40%, which is widely used in the field of building material production, and a small number of them are returned to the gasifier or circulating fluidized bed for reuse. Due to the large amount of non-combustible ash and slag, the energy utilization rate is low . If the residual carbon in the fine slag is re-se...

Claims

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Application Information

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IPC IPC(8): B03C3/04B03C3/34B03C3/41B03C3/45B03C3/66C08G65/332
CPCB03C3/04B03C3/41B03C3/45B03C3/66B03C3/34C08G65/3322
Inventor 孙路滨王倩倩王文博高学顺张宏科姜良建
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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