Electricity generated by mixing and burning garbage and methane prepared by using mud and comprehensive utilization method thereof

A biogas and garbage technology, which is applied in combustion methods, sludge treatment, biological sludge treatment, etc. Pollution and other problems, to achieve the effect of solving unstable combustion, reducing the emission of harmful substances, and improving stability

Inactive Publication Date: 2009-11-11
北京博朗环境工程技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the calorific value of the biogas slag from the biogas digester is extremely low. If it is stacked or buried in the open air with a large amount of slag, it will occupy a large amount of land and cause secondary pollution. Quantified Disposal Targets

Method used

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  • Electricity generated by mixing and burning garbage and methane prepared by using mud and comprehensive utilization method thereof
  • Electricity generated by mixing and burning garbage and methane prepared by using mud and comprehensive utilization method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The present invention is a system for making biogas from sludge and co-combustion of garbage to generate electricity and its comprehensive utilization. As shown in the figure, it mainly includes:

[0033] 1. Sludge biogas production and garbage storage and transportation system: the sludge is mainly mixed, digested and transported to the biogas digester of the incineration power plant to obtain biogas and stored in storage tanks for later use; domestic waste is collected, stored and transported to the incineration power plant The material storage pit is ready for use.

[0034] 2. Incineration system: The fermented garbage in the storage pit and the biogas in the storage tank are sent to the incinerator for combustion. In the incinerator, the combustion components of the mixed materials are fully burned and converted into heat energy, and the non-combustible components are converted into ash and slag for discharge. post-collection processing.

[0035] 3. Energy conversi...

Embodiment 2

[0040] Table 1: Composition analysis of biogas produced from general sludge

[0041]

[0042] According to the biogas composition analysis in Table 1, the added ratio is different from the waste composition.

[0043] With the improvement of people's material living standards, the calorific value of waste will also continue to increase, so incineration power generation equipment is generally designed with a higher calorific value of waste than the current one. When the garbage quality is good, such as leaves, paper, plastic garbage, a small amount of biogas is introduced, generally 50-500m 3 Biogas / t waste, at this time, the combustion temperature in the furnace is generally maintained at around 850°C to 1300°C. In this way, the high-efficiency operation of incineration power generation equipment can be ensured, and at the same time, the waste burning rate can be improved, the thermal ignition loss rate of waste ash can be reduced, and higher emission standards can be obtai...

Embodiment 3

[0045] The moisture content of garbage, the content of ash and soil and the composition of garbage are the main factors affecting the combustion of garbage. When the quality of the garbage is not good, generally speaking, the garbage has a high dust content or a high moisture content or both, such as rotten vegetable leaves, dust particles, swill and other domestic garbage. At this time, the combustion situation of the garbage deteriorates sharply, which may lead to flameout. The problem can be solved by adding biogas, and the amount of biogas added is controlled according to the components of the garbage. At this time, the amount of biogas added is generally 200-500m 3 For biogas / t of waste, the combustion temperature is generally maintained at 850°C to 1100°C, so as to ensure efficient and full combustion of waste and discharge up to the standard.

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Abstract

The invention discloses electricity generated by mixing and burning garbage and methane prepared by mud and a comprehensive utilization method thereof. In the invention, mud is mixed and assimilated to generate methane in a methane tank, and the methane is transferred to a burning furnace to be burnt together with garbage to generate heat energy which is converted into electric energy through a boiler, a steam turbine and a generator. The burning mixture ratio of transferred methane and household garbage is adjusted continuously according to different garbage characters. 50-500m of the methane is mixed with one ton of the garbage and sufficiently burnt with the same at 850-1300 DEG C in the burning furnace, the discharge of burning product reaches the standard, and biogas residues, clinker, and the like are comprehensively utilized. The invention also realizes the resource utilization and the complementary advantages of two wastes.

Description

technical field [0001] The invention relates to a method for generating biogas by using sludge and co-combusting garbage to generate electricity and its comprehensive utilization. Background technique [0002] As mankind enters the 21st century, with the increasing emergence of a series of ecological and environmental problems, the concept of circular economy has been deeply rooted in the hearts of the people. The sustainable development strategy has become an important economic model in my country. The reform and opening up have made my country's economy develop rapidly. In the 11th Five-Year Plan, the country clearly stated that "it is necessary to speed up the construction of a resource-saving and environment-friendly society, vigorously develop the circular economy, increase environmental protection, effectively protect the natural ecology, and seriously solve the impact on economic and social development, especially serious hazards. People's health is a prominent environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/04F23G7/00B09B3/00F01K11/02
CPCY02E50/343Y02E20/12Y02E50/30Y02W10/20
Inventor 赵昕哲杨振良刘春雨王翼鹏王震
Owner 北京博朗环境工程技术股份有限公司
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