Cremation machine all-dry-method posttreatment system

Abstract

The invention relates to the technical field of cremation machines, in particular to a cremation machine all-dry-method posttreatment system which is characterized by comprising a smoke gas and water isolation type shock cooling device, a powder spraying device, a dust remover and adsorption equipment. A processing technology includes the following steps: enabling high-temperature smoke gas which is generated by a cremation machine to enter the smoke gas and water isolation type shock cooling device for cooling, enabling the smoke gas in a pipeline to be mixed and contact with powdery absorbents which are sprayed by the powder spraying device through a powder spraying process, enabling the absorbents to react with sulfur oxides and acidic materials in the smoke gas to produce powdery calcium compounds, and enabling the smoke gas to be conducted at least two levels of dust removing through the dust remover, trapping dust and sparkles in the smoke gas through the dust remover, wherein off gas after dust removing enters the adsorption equipment, residual infinitesimal noxious substances are absorbed by the adsorption equipment, and the off gas is discharged from a chimney. According to the cremation machine all-dry-method posttreatment system, cooling water is recycled, and therefore generation of water of secondary pollution is completely eliminated. In addition, the cremation machine all-dry-method posttreatment system has the advantages that blocking is not easy, the equipment cannot easily be corroded, energy is saved, consumption is low, damage to the equipment is small, service life of the equipment is prolonged, environment is protected, and the like.

Description

technical field [0001] The invention relates to the technical field of cremation machines, in particular to an energy-saving and environment-friendly cremation smoke treatment system with long service life and automatic control. Background technique [0002] In 2009, my country promulgated a new emission standard for cremation machine smoke "GB13801-2009". Therefore, funeral homes all over the country have introduced and developed chemical machine post-processing equipment to meet the new emission standards for the control of smoke, toxic substances, and harmful substances. [0003] The working principle of the cremation machine exhaust post-treatment equipment is to absorb and neutralize toxic and harmful substances to convert them into non-toxic and harmless substances, settle and intercept dust, and prevent the secondary synthesis of toxic and harmful substances in the process of temperature drop, thereby To achieve the purpose of purifying exhaust gas and meeting emissio...

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Problems solved by technology

[0004] At present, the post-treatment system of domestic cremation machines includes atomization spraying quenching deacidification device (wet method), cyclone dust collector, bag filter, and activated carbon adsorption device. Spraying and quenching deacidification, followed by cyclone dust removal and bag dust removal, and then discharged from the chimney after being adsorbed by activated carbon. In the process of atomization spraying and quenching deacidification process, the method of lye atomization spraying is used to cool down and desulfurize the flue gas Deacidification, although this method can make the flue gas treatment meet the new emission standards, there are various unavoidable drawbacks and defects. Because in the above-mentioned process, the cooling and deacidification adopts the wet method of direct spraying of lye, if the lye is sprayed Insufficient showering and slow cooling of the flue gas will inevitably lead to insufficient absorption and transformation of harmful substances and secondary synthesis of toxic dioxins. If it is intercepted in a physical way, its own pollution, harmfulness, toxicity and other problems have not been fundamentally solved. It will endanger the health of the staff if it exists in the post-processing equipment, and these toxic and harmful post-processing wastes will not matter The outflow and discharge in any way will harm the surrounding ecological environment, which violates the original intention of setting up a post-treatment system to reduce emissions and protect the environment

If the lye is sprayed too much, the water content in the flue gas will inevitably increase greatly, and the water in the lye will be discharged after one-time use, which will consume a lot of water; when the water-containing dust enters the dust removal equipment, it will easily adhere to the dust removal equipment, It will cause fouling or even blockage in the pipeline; the bag filter is a dry dust filter device, which is suitable for collecting fine and dry dust. If there is water in the flue gas, after passing through the bag filter, the water-containing dust will adhere to the bag and form The mortar layer will damage the cloth bag, and even a large amount of "black water" will leak from the dust collector. These secondary polluted water containing various harmful substances will be discharged through the sewer without treatment, which will inevitably endanger the surrounding ecological environment; dust Adhesion and fouling of pipes will inevitably lead to increased system resistance loss, reduced equipment service life and dust removal efficiency, and water-containing flue gas is not conducive to diffusion and discharge. All of these require increased system tension, resulting in increased energy consumption and increased transformer load. Insufficient, it will also increase the operating cost, which is not conducive to the establishment of stable working conditions; when the exhaust gas with high water content is discharged from the chimney, it will also condense into visible water mist at the discharge port or condense in the chimney, forming thick "white smoke" ", it is easy to cause mass incidents

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