Method for producing compound fertilizer by using humates simultaneously desulfurizing and denitrating

A desulfurization, denitrification, and humate technology, which is applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of difficult industrial application, high desorption temperature, and difficult regeneration, and achieves good energy-saving effect. The effect of less pollution and easy cleaning and removal

Inactive Publication Date: 2008-05-28
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technology of using activated carbon, activated carbon fiber, activated coke, and simultaneous desulfurization and denitrification of copper oxide and alumina has disadvantages such as high desorption temperature, difficult regeneration, easy ignition and loss of activity, and is difficult for industrial application.

Method used

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  • Method for producing compound fertilizer by using humates simultaneously desulfurizing and denitrating
  • Method for producing compound fertilizer by using humates simultaneously desulfurizing and denitrating
  • Method for producing compound fertilizer by using humates simultaneously desulfurizing and denitrating

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Use aluminum oxide fibers, the diameter of which is about 0.01 μm, extruded into a honeycomb shape, and then sintered into a porous carrier at 500 ° C. The porosity of the sintered porous carrier is 35%, and the specific gravity is 800kg / m 3 , the sintered porous catalyst support was coated with Cu(NO 3 ) 2 Sodium humic acid solution (mass percentage content is 20%), then dried at 60°C for 24 hours, baked at 400°C for 8 hours, then impregnated the porous catalytic carrier with sodium humate solution (mass percentage content is 1%), and loaded with smoke In the gas desulfurization and denitrification tower 1, an adsorption / absorption reaction layer is formed, and water mist is sprayed into the flue gas inlet section of the desulfurization and denitration tower 1 to humidify the flue gas, and the waste heat of the flue gas is used to vaporize the water mist, and the temperature of the reaction layer is controlled at At 80°C, under the action of hot and humid steam, the p...

Embodiment 2

[0052] Use aluminum oxide fibers with a diameter of 5 μm, extrude into a cuboid shape, and sinter at 900°C to form a porous carrier. The sintered porous carrier has a porosity of 60% and a specific gravity of 550kg / m 3 , the sintered porous support in Ni(COOCH 3 ) 2 (mass percentage content is 8%) impregnated in the solution, then dried at 110 DEG C for 12 hours, roasted at 600 DEG C for 6 hours, then impregnated the porous catalytic carrier with potassium humate solution (mass percentage content was 20%), loaded into smoke In the gas desulfurization and denitrification tower 1, an adsorption / absorption reaction layer is formed, and water mist is sprayed into the flue gas inlet section of the desulfurization and denitration tower 1 to humidify the flue gas, and the waste heat of the flue gas is used to vaporize the water mist, and the temperature of the reaction layer is controlled at At 180°C, under the action of hot and humid steam, the porous catalytic carrier loaded with ...

Embodiment 3

[0054] Use aluminum oxide fibers, the diameter of which is about 30 μm, extruded into a honeycomb shape, and then sintered into a porous carrier at 1500 ° C. The porosity of the sintered porous carrier is 85%, and the specific gravity is 300kg / m 3 , impregnate the porous catalytic carrier after sintering in cobalt nitrate solution (mass percentage content is 0.1%), then dry at 200 DEG C for 8 hours, roast at 900 DEG C for 4 hours, then impregnate the porous catalytic carrier with potassium humate solution (mass After the percentage content is 50%), it is loaded into the flue gas desulfurization and denitrification tower 1 to form an adsorption / absorption reaction layer. Humidify the flue gas entering the desulfurization and denitrification tower 1 to obtain a hot and humid steam environment, use the waste heat of the flue gas to vaporize the water mist, control the temperature of the desulfurization and denitrification reaction layer at 300 ° C, and the reaction layer is loaded...

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Abstract

The invention discloses a method for producing compound fertilizer by means of synchronous desulfurization and denitrition by humate, belonging to the field of environmental protection and fertilizer technique, which includes following procedures: aluminum oxide fiber is used and sintered into a porous support after an extrusion formation; the porous support is impregnated in catalyst solution; after being dried and roasted, the porous support is impregnated in humate solution; a porous catalysis support is placed in a flue gas desulfurization and denitrition tower, thus forming a sorption / absorption reaction layer; water mist is sprawled to a flue gas inlet section of the desulfurization and denitrition tower, thus humidifying the flue gas and realizing synchronous desulfurization and denitrition of the flue gas; product of the desulfurization and denitrition is organic compound fertilizer; after absorption saturation of the porous catalysis support, the reaction layer is sprayed and washed with water; the product of the desulfurization and denitrition is removed and cleaned thoroughly, then the porous catalysis support is sprinkled and soaked by the humate again to give regeneration to the reaction layer. Reclamation utilization and environmental protection are ensured by the invention at the same time; the invention has the outstanding advantages of high efficiency, low cost, low discharge, and product reclamation.

Description

technical field [0001] The invention relates to a method for producing compound fertilizer in the field of environmental protection and fertilizer technology, in particular to a method for producing compound fertilizer by simultaneously desulfurizing and denitrating humate. Background technique [0002] A large amount of pollutants such as dust, SOx and NOx are emitted from the coal-fired flue gas, which brings serious damage to the environment and ecology. Flue gas desulfurization and denitration is the main method to solve SOx and NOx pollution. At present, various countries in the world have carried out extensive and in-depth research on the purification of coal-fired flue gas, and there are many methods. But regardless of the method, if the desulfurization and denitrification products cannot be used, a large amount of waste residue will be piled up on the site, which will cause secondary pollution, which is a great waste of resources. [0003] Therefore, the developmen...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/60C05F15/00
CPCY02A50/20
Inventor 胡国新
Owner SHANGHAI JIAO TONG UNIV
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