Double desulfurization device and method for gases from landfill
A desulfurization device, landfill technology, applied in separation methods, gas treatment, chemical instruments and methods, etc., can solve problems such as low energy consumption, and achieve the effects of energy saving, large processing capacity, and prolonging service life
Inactive Publication Date: 2016-12-07
LIAONING UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
[0004] The present invention designs and develops a double-type landfill gas desulfurization device. The purpose of the present invention is to solve the problem that the desulfurization operation can be performed simultaneously through physical adsorption and chemical absorption in the prior art, so as to achieve recovery of elemental sulfur, high desulfurization efficiency, and low energy consumption. , easy-to-operate issues
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[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0044] Such as figure 1 As shown, the present invention provides a dual-type landfill gas desulfurization device, which uses physical adsorption and chemical oxidation for desulfurization treatment at the same time. Physical adsorption is relatively simple and economical in equipment, and has the disadvantages of occupying a large area, and the utilization of chemical oxidation is improved. The LO-CAT process adds an electrolytic cell to ensure that most of the ferrous ions are oxidized to meet the requirements, and adds a distillation tower to ensure the concentration of ferric ions. The air blower blows from the air tank into the air oxidation regeneration tower. The ferrous ions in the regeneration tower will produce A little water affects the reaction of the absorption to...
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The invention discloses a double desulfurization device for gases from a landfill. In the landfill, the content of H2S is less than the content of CO2 and CH4 in the gases from the landfill; in such a double desulfurization process for the gases from the landfill, the activated carbon adsorption and a chemical oxidation LO-CAT process can be selected; the desulfurization device mainly comprises two main routes of physical absorption and chemical oxidation; benign activated carbon is adopted for the physical adsorption and can be repeatedly used for 20 to 30 times; after the activated carbon adsorption is completed, elemental sulfur is separated out by using a retort gas in a chemical oxidation procedure; in the chemical oxidation procedure, an absorption tower, a regeneration tower, a gas-liquid separator, a filter, a buffer tank, an electrolytic tank, a distillation tower, a liquid concentration tester, an air-blaster and the like are used. The invention discloses a double desulfurization method for the gases from the landfill. The double desulfurization device and the double desulfurization method for the gases from the landfill have the advantages of circulation, sustainability, greenness, little pollution, output of the elemental sulfur, energy conservation, economical efficiency, adjustable selection of the routes of the device, and the like.
Description
technical field [0001] The invention relates to the field of landfill garbage desulfurization technology, in particular to a double-type landfill gas desulfurization device and method. Background technique [0002] The harm caused by stench to the human body ranks second only to noise among the seven kinds of environmental hazards. Therefore, many countries have made clear regulations on their emission limits in relevant laws and regulations. h 2 As one of the main components of malodorous gas, S in landfill H 2 The content of S is related to the composition of landfill waste. H in landfill gas when landfilling construction materials such as plasterboard and sulfate-containing sludge 2 S will increase a lot. [0003] There are many practical technologies for removing sulfides, but which technology to choose should consider the site conditions of the landfill site and the gas conditions of the landfill site. The difficulty is to be both economical and efficient; dry desu...
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IPC IPC(8): B01D53/18B01D53/14B01D53/04C01B17/04C25B1/00C25B15/08
CPCB01D53/04B01D53/1425B01D53/1468B01D53/18B01D2253/102B01D2259/4009C01B17/0452C25B1/00C25B15/08Y02E50/30
Inventor 孙洪军周爱鹏赵丽红曹宾边旭阳
Owner LIAONING UNIVERSITY OF TECHNOLOGY