Solid waste incineration system and process thereof

A solid waste and waste technology, applied in incinerators, combustion methods, combustion types, etc., can solve the problems of inability to remove 100% nitrogen and phosphorus, difficult processing, shutdown processing, etc. The effect of improving disposal efficiency

Pending Publication Date: 2017-09-01
无锡绿麦环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after dry deacidification and wet deacidification, it is still impossible to remove 100% of the nitrogen and phosphorus in the flue gas. After the residual nitrogen and phosphorus are discharged into the water, such as Taihu Lake, it is easy to promote the growth of blue-green algae, so it is necessary to thoroughly Removal of nitrogen and phosphorus to achieve zero discharge of nitrogen and phosphorus
In addition, because the dry deacidification can only remove about 30% of the acid, and most of the remaining acid is completed in the wet deacidification process, therefore, a large amount of salt will be produced after the acid solution hardens with the lye in the washing tower , if the salt is not discharged in time, the salt crystallizes and remains in the washing tower, which requires regular addition of water and lye for treatment, which is difficult to deal with and needs to be shut down for treatment, and the cost is very high

Method used

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  • Solid waste incineration system and process thereof
  • Solid waste incineration system and process thereof
  • Solid waste incineration system and process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: as figure 1 As shown, the solid waste incineration system of this embodiment includes waste feeding device 13, dry distillation furnace 1, secondary combustion chamber 3, waste heat boiler 4, quenching tower 5, neutralization tower 6, bag dust removal device connected in sequence 7. The washing tower 8 and the chimney 9, the retort furnace 1, and the waste heat boiler 4 are all connected to the softening water device 2, the washing tower 8 is connected to the lye pool 10, and the neutralization tower 6 is connected to the lime slurry pool 11. The present invention also provides a treatment process for a solid waste flue gas treatment system, including a semi-dry deacidification process and a wet deacidification process. The semi-dry deacidification process includes introducing the lime slurry in the lime slurry tank 11 into the neutralization tower 6 The reaction process of neutralizing and acid gas in flue gas, wet deacidification includes and passing the...

Embodiment 2

[0024] Embodiment 2: This embodiment has been improved on the basis of Embodiment 1, and the washing tower 8 is connected with the quenching tower 5 through pipelines, and the residual lye, salt, etc. of the washing tower 8 are transported to the quenching tower 5 by delivery equipment . The treatment process of this embodiment also includes a semi-dry deacidification process and a wet deacidification process. The semi-dry deacidification process includes introducing the lime slurry in the lime slurry pool 11 into the neutralization tower 6 to mix with the acid gas in the flue gas. The reaction process of wet deacidification includes and the reaction process of passing the lye in the lye pool 10 into the scrubber and the acid gas in the flue gas; The lye and the salt produced are introduced into the quench tower 5. Since the residual lye is introduced into the quenching tower 5, on the one hand, it is used to enhance the quenching effect of the quenching tower 5, and on the o...

Embodiment 3

[0025] Embodiment 3: This embodiment is further improved on the basis of Embodiment 2. Two sets of quenching towers 5 are arranged. The work can be switched among the towers 5 to realize one for use and one for standby. Since the residual lye and salt in the washing tower 8 are introduced into the quenching tower 5, the salt content in the quenching tower 5 increases. In order not to affect the work effect, the quenching tower 5 needs to be desalted regularly, and the desalination needs to be shut down. Therefore, two sets of quenching towers 5 are used for switching to realize continuous operation. The treatment process of this embodiment includes a semi-dry deacidification process and a wet deacidification process. The semi-dry deacidification process includes introducing the lime slurry in the lime slurry pool 11 into the neutralization tower 6 and the acid gas in the flue gas. The reaction process, wet deacidification includes and the reaction process of passing the lye i...

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Abstract

The invention relates to a solid waste incineration system and process. The solid waste incineration system comprises a waste feeding device, a dry distillation furnace, a second combustion chamber, a waste heat boiler, a quench tower, a neutralizing tower, a bag-type dust collection device, a washing tower and a stack which are sequentially connected. The dry distillation furnace and the waste heat boiler are both connected with a demineralized water treatment device, the washing tower is connected with an alkali liquor pond, and the neutralizing tower is connected with a lime slurry pond. According to the solid waste incineration system and process, semidry method deacidification and wet method deacidification are combined, on the one hand, zero nitrogen and phosphorus emission after tail gas treatment is conducted can be guaranteed, on the other hand, generation of a large amount of salt in the quench tower is avoided, and the cleaning cycle of the system is prolonged.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a solid waste flue gas treatment system. Background technique [0002] With the rapid development of social economy and the improvement of people's consumption level, the amount of industrial solid waste generated in the production process of enterprises is increasing day by day. Industrial solid waste, especially hazardous waste, has the characteristics of serious, long-term, potential, irreversible and difficult to control the pollution of the ecological environment. If not handled properly, it will leave great hidden dangers to people's health, environment and economic development. [0003] At present, many regions in my country have built or are planning to build waste centralized treatment and disposal centers, including comprehensive utilization, incineration, physical chemical, stabilization / solidification, safe landfill and other treatment of hazardous wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/027F23G5/16F23G5/46F23J15/00F23J15/04F23J15/02F22B1/18
CPCF22B1/18F23G5/027F23G5/16F23G5/46F23J15/006F23J15/025F23J15/04F23G2900/50001F23G2206/203F23G2201/304F23G2202/10F23J2215/10F23J2217/10Y02E20/12
Inventor 张莉
Owner 无锡绿麦环保科技有限公司
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