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Method for using coke oven to dispose of waste-derived fuel and product cascade resource utilization

A waste-derived fuel and recycling technology, applied in biofuels, coke ovens, energy input, etc., can solve the problems of inability to be applied on a large scale, small processing capacity, and low degree of automation, and shorten the pretreatment process and reduce processing costs , Improve the effect of incineration efficiency

Active Publication Date: 2022-03-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional garbage carbonization process has the problems of small processing capacity and low degree of automation, which often cannot be applied on a large scale

Method used

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  • Method for using coke oven to dispose of waste-derived fuel and product cascade resource utilization
  • Method for using coke oven to dispose of waste-derived fuel and product cascade resource utilization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A total of 40Kg of RDF and fat coal mixed with domestic waste, charcoal and coal powder are fully crushed and mixed in a mass ratio of 3:97, and put into a 40Kg experimental top-loading coke oven. to 1100±50°C, and then out of the oven after constant temperature. A total of 30.8Kg of dry distillation solids (including tar and other organic liquid substances) and a total of 12.48m of dry distillation gas 3 . The solid composition analysis is shown in Table 1, and the gas analysis is shown in Table 2. According to the Chinese metallurgical coke quality standard (GB / T1996—2003), the parameters of Class III metallurgical coke are specified in the range of ash content ≤ 15%, volatile content ≤ 1.8, sulfur content ≤ 1.00, M40 ≥ 72, M10 ≤ 10.5. The CRI and CSR of Class III metallurgical coke are not limited to a clear range, and the requirements of Class II metallurgical coke are that CRI≤35% and CSR≥50. The carbonized solids released from the furnace meet the Class III met...

Embodiment 2

[0024] A total of 40Kg of RDF and fat coal mixed with domestic waste, charcoal and coal powder are fully crushed and mixed in a mass ratio of 3:7, and put into a 40Kg experimental top-loading coke oven. to 1100±50°C, and then out of the oven after constant temperature. A total of 31.81Kg of dry distillation solids (including tar and other organic liquid substances), a total of 8.18m of dry distillation gas 3 . The solid composition analysis is shown in Table 1, and the gas analysis is shown in Table 2. The calorific value of the dry distillation solid is about 4617Kcal / Kg, which can be used as a high-quality civil coke solid fuel. The calorific value of dry distillation gas is 14.93MJ / m 3 , about 78.6% of conventional coke oven gas, and the gas production rate is 0.30m 3 / Kg, the same gas production rate as conventional coke oven gas, which can be used in waste heat boilers and combustion furnaces.

Embodiment 3

[0026] After crushing 40Kg of 100% RDF, put it into a 40Kg experimental top-loading coke oven. The temperature of the furnace wall is 800°C when the furnace is loaded, and the temperature rises to 1100±50°C after 16 hours. A total of 29.64Kg of dry distillation solids (including tar and other organic liquid substances) and a total of 14m of dry distillation gases 3 . The solid composition analysis is shown in Table 1, and the gas analysis is shown in Table 2. The calorific value of the dry distillation solid is about 1798Kcal / Kg, which can be used as high-quality civil coke solid fuel or high-quality raw material for waste incineration plants. The calorific value of dry distillation gas is 13.99MJ / m 3 , about 73.6% of conventional coke oven gas, and the gas production rate is 0.35m 3 / Kg, the same gas production rate as conventional coke oven gas, which can be used in waste heat boilers and combustion furnaces.

[0027] Table 1 Analysis of solid components

[0028]

[...

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Abstract

The invention provides a method for using coke ovens to dispose of garbage-derived fuels and utilize products in cascaded resources, and belongs to the technical field of solid waste treatment. In this method, garbage-derived fuel and coal are mixed in proportion and put into a top-loaded coke oven. After the coke oven reacts, coke is pushed out from the side of the oven to produce dry distillation solids, and dry distillation gas is collected from a gas collection system. Continuous production can be realized by repeating the top loading process. According to the different input ratios of domestic waste-derived fuels, the dry distillation solids can be classified as resources, which can be used as fuel, biochar, etc., and the dry distillation gas can be used as gas fuel after waste heat recovery. The invention utilizes the existing coking equipment to realize the continuous production of garbage-derived fuels from low-grade energy products to high-grade energy products, and is a feasible means of energy regeneration.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a method for using coke ovens to dispose of refuse-derived fuels and utilizing products in cascading resources. Background technique [0002] Energy shortage and environmental pressure have made the concept of sustainable development a global consensus. The rational disposal and treatment of solid waste is of great significance. Refuse Derived Fuel (RDF) is a fuel made by crushing, sorting, drying, adding chemicals, compressing and molding combustible garbage. In Europe and Japan, converting waste into RDF and transferring it to treatment facilities such as incineration plants is a viable option to recycle energy and reduce landfill volume. In the United States, the relevant standards for RDF are very complete, which makes RDF widely used. In my country, the current main application of RDF is combustion, but because the source of RDF is very complicated, this het...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/00C10B53/02C10B53/04
CPCC10B53/00C10B53/02C10B53/04Y02P20/129Y02E50/10
Inventor 马鸿志武文宇胡丁琛吴川福高明汪群慧苏伟汤广武任彦蓁
Owner UNIV OF SCI & TECH BEIJING
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