Pyrolysis gasification catalyst and papermaking waste treatment process using pyrolysis gasification catalyst

Abstract

The invention discloses a pyrolysis gasification catalyst which comprises the following components: 35 to 50% of calcium oxide, 10 to 20% of zirconium oxide, 15 to 25% of titanium dioxide, 15 to 25% of sodium bicarbonate and 10 to 20 % of citric acid. The components are crushed to form a mixture; the present invention also discloses a papermaking waste treatment process comprising 1) crushing: crushing papermaking waste into flocculent; 2) dehydration: reducing the water of the papermaking waste to 20-40% ; 3) adding: adding the pyrolysis gasification catalyst accounting for 3-5% of the mass of the papermaking waste; 4) mixing: uniformly mixing the papermaking waste and the catalyst; 5) drying: controlling the water of the mixed material to 15-25%; 6) pelletizing: obtaining organic-matter-derived fuel particles; 7) cooling: cooling the particles to room temperature; 8) pyrolyzing and gasifying: pyrolyzing and gasifying the particles at 600-800 DEG C under micro-oxygen conditions of the air equivalence ratio of 0.1-0.28; and 9) gas separation: removing wood tar from mixed fuel gas through purification; and the pyrolysis gasification catalyst can effectively improve the gasification efficiency of the fuel particles and fuel gas production, can neutralize corrosive gases, greatly improves sludge utilization rate, and effectively protects the environment.

Description

technical field [0001] The invention relates to a pyrolysis gasification catalyst and a papermaking waste treatment process using the catalyst. Background technique [0002] With the improvement of the awareness of environmental protection of the whole people, the landfill treatment of municipal solid waste is restricted, and the country has begun to implement mandatory classification policies and measures for municipal solid waste, which will inevitably bring a large amount of combustible waste that cannot be simply disposed of or directly incinerated. Some resource-based treatment facilities also produce a large amount of combustible garbage after sorting (the specific components are: garbage plastics, cloth, footwear, bamboo, wood, packaging, etc.), which cannot be treated in an environmentally friendly manner, causing secondary pollution; [0003] With the rapid development of my country's resource recycling industry, especially the rapid development of the recycled pape...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of the awareness of environmental protection of the whole people, the landfill treatment of municipal solid waste is restricted, and the country has begun to implement mandatory classification policies and measures for municipal solid waste, which will inevitably bring a large amount of combustible waste that cannot be simply disposed of or directly incinerated.

Some resource-based treatment facilities also produce a large amount of combustible garbage after sorting (the specific components are: garbage plastics, cloth, footwear, bamboo, wood, packaging, etc.), which cannot be treated in an environmentally friendly manner, causing secondary pollution;

[0003] With the rapid development of my country's resource recycling industry, especially the rapid development of the recycled paper industry, a large amount of paper-making combustible waste (its components are also: garbage plastics, tapes, textiles, bamboo, wood, etc.) has been produced. It is used to produce RDF derived fuel, repyrolysis and gasification to generate mixed gas, incineration and power generation, but the gasification efficiency of the current treatment method is generally low, the amount of carbon residue in the slag discharge is high, and the gas output is not good; The organic combustible waste contains sulfur, chlorine, fluorine and other elements. The sulfur, chlorine and fluorine-containing gases produced by pyrolysis will seriously corrode the equipment, reduce its service life, and pollute the environment; in addition, recycled papermaking sludge and sewage The sludge produced by the treatment plant contains a lot of organic matter and has a certain calorific value. However, it is difficult to effectively use the urban sludge at present, and the utilization rate of the sludge is low. The pressure of urban environmental protection is still relatively high.

Images