Plasma multi-stage cracking technology and apparatus capable of processing multiple organic wastes simultaneously

A plasma and organic waste technology, applied in the field of plasma cracking, can solve the problems of high cost, inability to process multiple different types of waste at the same time, high power consumption, etc., to save energy and time, save power consumption, and large volume.

Active Publication Date: 2005-06-01
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to overcome the shortcomings of the existing plasma cracking technology, such as high cost, high power consumption, and the inability to process multiple different types of waste at the same time; thereby providing a method in which two-stage plasma cracking furnaces are connected in series or in parallel An integrated furnace body is formed, and different working gases and working atmospheres are used at each level to realize the method and device for simultaneous pyrolysis and treatment of different types of hazardous wastes

Method used

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  • Plasma multi-stage cracking technology and apparatus capable of processing multiple organic wastes simultaneously
  • Plasma multi-stage cracking technology and apparatus capable of processing multiple organic wastes simultaneously
  • Plasma multi-stage cracking technology and apparatus capable of processing multiple organic wastes simultaneously

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Embodiment 1

[0066] Refer to attached figure 1 With the accompanying drawings and specific examples, the process and the plasma furnace of the present invention for plasma cracking organic waste composed in series are further described in detail.

[0067] Embodiment 1 of the present invention adopts the method for treating solid hazardous waste in series, and proceeds according to the following steps:

[0068] (1) First, the toxic and harmful solid wastes containing fluorine and polychlorinated biphenyl residues to be treated are pulverized, and then continuously transported to the plasma arc furnace of the present embodiment 1 by a screw conveying system. What is produced is a plasma arc, using hydrogen as the working gas of the plasma generator, the power is 150kW, and it can process 60kg per hour; the cracking treatment temperature is 1800-2000K; by adding 30 parts of silicon dioxide, calcium carbonate, 40 parts of sodium mixture, 20 parts of ferric oxide and metal iron flakes are used...

Embodiment 2

[0077] combined with figure 2 , apply the plasma cracking furnace of the embodiment of the present invention 2, carry out cracking treatment phosphorus-containing fertilizer pesticide, carry out according to the following steps:

[0078] (1) The non-pesticides to be treated are pulverized, and then continuously transported to the plasma arc furnace of the present embodiment 2 through the feeding system; what it produces during operation is a plasma arc, and hydrogen is used as the plasma to generate The working gas of the device uses a DC power supply, the working voltage is 40V, the power is 25kW, and it can process 15kg per hour; the cracking temperature is 1600-1700K;

[0079] (2) At the same time, waste plastics are fed into the secondary plasma cracking furnace through a hydraulic feeder, and the feed hydraulic push rod and plunger are installed at the feed port of the furnace body; the time interval that can be used in the intermittent feeding method depends on the temp...

Embodiment 3

[0086] Embodiment 3: apply the integrated cracking furnace of the present invention and the method serial type of the present invention to process solid hazardous waste, its step is similar to embodiment 1, because the waste that the primary cracking furnace handles contains fluorine, chlorine etc. to form the composition of acid gas Therefore, the purification measures of the primary cracking furnace tail gas can be omitted in the technological process ( figure 1 The part marked with a dotted line in the middle) adopts the integrated furnace body 1 (Fig. 3a, Fig. 3b, Fig. 3c), and does not set the exhaust port 6 of the primary cracking furnace. The specific process is carried out in the following order:

[0087] (1) the rubber intermediate (waste) of the rubber plant to be treated is broken, and then continuously delivered to the first-level cracking hearth of the present invention by the first-level cracking furnace screw feeding device 2, and the first-level cracking furnace...

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Abstract

The present invention relates to one kind of multistage plasma cracking method and apparatus for treating several kinds of organic waste simultaneously. There are the first stage of plasma cracking furnace adopting reductive gas and producing inflammable tail gas capable of providing the next stage with auxiliary energy source; and the second stage of cracking furnace adopting oxidizing gas to save electric power consumption. In parallel configuration, the first cracking furnace and the second cracking furnace may share one tail gas unit. In serial configuration, the tail gas from the first stage may be used as the auxiliary fuel in the second stage, and the inflammable gas the second stage exhausts may be burned in the combustor or used in generator to produce electricity. The two-stage cracking furnace has at least one gas inlet for raising the cracking temperature and saving energy source, and may be designed integrally.

Description

technical field [0001] The invention relates to a plasma cracking method and a plasma furnace, in particular to a plasma multi-stage cracking process and device for simultaneously treating multiple organic wastes. Background technique [0002] Organic waste is not only extremely harmful in itself, but may also contain various other toxic and harmful components. For example, the bacteria and viruses carried by medical waste are highly infectious, and chemical waste contains toxic and harmful organic substances such as polycyclic aromatic hydrocarbons and polychlorinated biphenyls, so they must be effectively treated and disposed of. At present, the treatment of medical waste and other organic waste has become an important environmental protection issue, and all sectors of society pay great attention to harmless treatment methods. The incineration method can completely eliminate pathogens, but it is easy to release harmful gases and produce secondary pollution. For example, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/00F23G7/00H05H1/02
CPCY02E20/12
Inventor 盛宏至魏小林
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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