A new substance for purifying industrial waste gas

A technology for industrial waste gas and substances, which is applied in air quality improvement, chemical instruments and methods, dispersed particle separation, etc., can solve the problem of high use cost, and achieve the effect of simple preparation process, low preparation cost and low use cost

Active Publication Date: 2017-06-23
NINGBO YUCHEN ENVIROCLEAN TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a new substance for purifying industrial waste gas, so as to solve the technical problem of high cost of use in the existing air pollution control equipment technology

Method used

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  • A new substance for purifying industrial waste gas
  • A new substance for purifying industrial waste gas
  • A new substance for purifying industrial waste gas

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preparation example Construction

[0039] In order to ensure that the preparation cost of the new substance is as low as possible, the municipal solid waste selected as the raw material, the preparation production process selects the hydrolysis reaction with water as the solvent, so that the waste used as the raw material does not need to be dried.

[0040] The composition of urban domestic solid waste is very complex, and it breeds a large number of microorganisms. The catalyst for the hydrolysis reaction of urban domestic solid waste is a catalyst that is very stable to the hydrolysis system. This catalyst is not poisoned by most traditional catalyst poisoning agents and has many Good water solubility: 9,10-dihydroxy-2,6-disulfonate sodium anthracene (Sodium 9,10-dihydroxyanthracene-2,6-disulfonate).

[0041] In order to ensure that the preparation cost of the new substance is as low as possible, the amount of catalyst used should be as small as possible. In the preparation reaction of the new substance discl...

Embodiment 1

[0058]In a 1-liter high-pressure reactor with stirring function, add 735ml of water, 112g (dry weight, moisture content 18.3%) self-prepared solid waste, 42g quicklime, 0.5g of 9,10-dihydroxy-2, 6-sodium anthracene disulfonate. After the reactor is sealed, replace it with nitrogen for 3 times, then add nitrogen, and keep a certain positive pressure in the reactor to prevent air from entering. Under stirring, heat to 250°C and keep stirring at this temperature for 50-60 minutes. After cooling to below 90°C, slowly release the pressure, then keep the temperature greater than 50°C, press filter to obtain 56.5 grams of solid product A with a moisture content of 28%.

[0059] Vacuum drying to a water content of less than 1% yielded a brown-gray solid product. This product is dispersed in anhydrous methanol, and then, under the condition of controlling the temperature of 40°C, dimethyl sulfate is added dropwise to react to about pH=1, refluxed for 30 minutes, filtered to remove th...

Embodiment 2

[0062] In a 1-liter autoclave with stirring function, add 725ml of water, 135g (dry weight, moisture content 26.5%, ash content 16.5%) collected from the dump and have been winnowed to remove metal, glass, stones municipal solid waste, 42g of quicklime, 0.5g of 9,10-dihydroxy-2,6-disulfonate sodium anthracene. After the reactor is sealed, replace it with nitrogen for 3 times, then add nitrogen, and keep a certain positive pressure in the kettle to prevent air from entering. Under stirring, heat to 250°C and keep stirring at this temperature for 50-60 minutes. After cooling to below 90°C, release the pressure slowly, then keep the temperature greater than 50°C, press filter to obtain 87.1 grams of solid product B with a moisture content of 28%, and an ash content of 43% after drying.

[0063] The results show that the ash in the garbage, the hydrolysis reaction does not convert them into water-soluble substances, and they are still solid when the temperature is greater than 50...

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Abstract

Provided is a novel substance for purifying an industrial waste gas. The novel substance is a brown-grey solid at normal temperature, the solubility of the novel substance in water is less than 1％, and the solubility of the novel substance in methanol is greater than 10%; the functional component of the novel substance is composed of a calcium salt of a fatty acid and a small molecule aromatic hydrocarbon, and the inefficient components are ashes and plastics. There are 2-5 benzene rings within each molecule of the small molecule aromatic hydrocarbon, and at least one carbon atom is directly connected with an oxygen atom. The effect of the novel substance for purifying an industrial waste gas is that various pollutants in the industrial waste gas are simultaneously effectively removed. Removal of a polycyclic aromatic hydrocarbon by using the novel substance is to combine same with the novel substance by way of a chemical bond, rather than physical adsorption which is not tightly combined. The novel substance is prepared by catalytic hydrolysis of household solid waste.

Description

technical field [0001] The invention belongs to the technical field of air purification, and in particular relates to a new substance capable of effectively removing pollutants in industrial waste gas, especially having an excellent ability to absorb carbon dioxide. The new substance is prepared from municipal domestic solid waste as a raw material. Background technique [0002] Exhaust gas pollution from coal thermal power plants is the most important source of environmental pollution, mainly including sulfur oxides, nitrogen oxides, dust, mercury, and aromatic hydrocarbons. Due to the high cost of using the current technology that can completely treat exhaust gas, and the electricity price cannot be greatly increased, most of the exhaust gas treatment technologies of coal thermal power plants have a large amount of pollutant discharge. According to document reports, China’s total sulfur dioxide emissions in 2012 were 21.176 million tons (15 million tons in the US), 23.378...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81B01D53/77B01D53/72B01D53/64B01D53/60B01D53/62
CPCB01D53/60B01D53/62B01D53/64B01D53/72B01D53/77B01D53/81Y02A50/20
Inventor 朱作霖
Owner NINGBO YUCHEN ENVIROCLEAN TECH
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