Fixed-bed gasification device, treatment system including same, waste treatment method
A treatment method and technology of a gasification device, which are applied in fixed bed gasification, removal of solid waste, production of combustible gas, etc., can solve the problems such as difficulty in reaching the emission standard of harmful substances, difficulty in treating phenol-containing wastewater, serious environmental pollution, etc. Achieve significant economic and environmental benefits, a wide range of applications, and the effect of reducing pollution levels
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Embodiment 1
[0036]Behind the rapid development and prosperity of my country's tanning industry, due to the industrial form and processing methods, it has aggravated the pollution of the environment, and many tanning areas show serious heavy metal chromium pollution. Leather scraps are scraps cut from leather, with a calorific value of about 13.7MJ / kg on a dry basis. Taking the scale of processing 100 tons of tanning waste per day as an example, the feed material is leather scrap, and its composition is shown in Table 1. Meaning of symbols: moisture (M), ash (A), volatile matter (V) and fixed carbon (Fc). Received basis (ar): The state of the sample is the state in which the batch of samples was received. Dry base (d): The state of the sample is a state of no moisture. The oxidizing agent is pure oxygen.
[0037] Table 1 Composition analysis of leather scraps
[0038]
[0039] Such as figure 1 and figure 2 As shown, the fixed-bed gasification device 1 used in this embodiment incl...
Embodiment 2
[0046] Medical waste refers to directly or indirectly infectious, toxic and other hazardous waste produced by medical and health institutions in medical treatment, health care and other related activities. Medical waste contains a large number of germs, viruses and chemicals, and is the medium for the enrichment and transmission of pathogenic microorganisms. It is a typical hazardous waste that can cause great harm to the environment and human body. Taking the daily processing scale of 100 tons of medical waste as an example, its composition is shown in Table 2, and its dry basis calorific value is about 21.9MJ / kg. The oxidant is 50% oxygen enriched.
[0047] Table 2 Analysis of components of medical waste
[0048]
[0049] process operating conditions and
[0050] The structure of the fixed-bed gasification device used in this example and the structure of the organic waste treatment system are the same as in Example 1, the difference lies in the specific operating parame...
Embodiment 3
[0054] In Example 3, the oxygen ratio of the first gas inlet and the second gas inlet is 3:1, the ratio of the vertical distance between the second gas inlet and the first gas inlet to the height of the gasification chamber is 0.4, and the gasification chamber The flameless oxidation reaction temperature inside the body is 900°C, and the rest of the conditions are the same as in Example 1.
[0055] The final product indicators are as follows:
[0056] The outlet synthesis gas temperature is 900°C, the output of synthesis gas is about 1.9t / h, and the content of CO+H2 is 40%. The carbon content in the ash is less than 5%, and no tar is produced in the whole process.
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