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A method for determining the limit distance of co-processing sludge in thermal power plants

A technology of co-processing and extreme distance, applied in combustion methods, sludge treatment, electrical digital data processing, etc., can solve problems such as economic constraints and achieve the effect of promoting the process

Active Publication Date: 2017-01-04
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

However, if the sewage treatment plant is far away from the thermal power plant, its economic benefits will be limited, and it is not even as good as the sewage treatment plant building its own sludge treatment system or choosing other sludge treatment technology routes. Therefore, how to determine the distance between the sewage treatment plant and the thermal power plant The limit distance is a practical problem that must be solved

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  • A method for determining the limit distance of co-processing sludge in thermal power plants
  • A method for determining the limit distance of co-processing sludge in thermal power plants
  • A method for determining the limit distance of co-processing sludge in thermal power plants

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0034] The present invention provides a method for determining the limit distance of co-processing sludge in thermal power plants. The following three technical routes for sludge disposal are used as examples to specifically illustrate how the present invention determines the limit distance. The technical route for co-processing sludge in power plants in the present invention is not Limited to routes (1) and (3) below.

[0035] (1) Technical route for co-firing sludge drying in thermal power plants:

[0036] Such as figure 1 As shown, the sludge with a water content of 95% produced by the sewage treatment plant is directly transported to the thermal power plant by vehicle without any treatment, and then dried by a sludge dryer using steam as a heat source (the waste gas generated by the sludge during the drying process is separated by a cyclone After preliminary tre...

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Abstract

The invention discloses a method for determining a critical distance of thermal power plant sludge co-processing. The method comprises the following steps: (1) determining unit expense generated in the sludge processing process according to a thermal power plant sludge co-processing technological route and a technical route of building a sludge incineration treatment system in a sewage treatment plant, and based on the unite expense generation condition, calculating total expense W, except for transport cost, generated in the sludge processing process according to the thermal power plant sludge co-processing technological route and the total expense M generated in the sludge processing process according to the technical route of building a sludge incineration treatment system in the sewage treatment plant; (2) calculating the difference value between total expenses, namely H=M-W; and (3) wherein the critical distance S between the sewage treatment plant and the thermal power plant is equal to H / T; and T is the transport unit price of unit sludge between the sewage treatment plant and the thermal power plant. A method for calculating the critical distance is provided for the sewage treatment plant which plans to adopt or has adopted the thermal power plant sludge co-processing, and can be used for designing or verifying whether the sewage treatment plant is suitable for adopting the thermal power plant sludge co-processing technical route or not when economic benefits are ensured.

Description

technical field [0001] The invention relates to a method for determining the limit distance for co-processing sludge in thermal power plants. Specifically, there is a limit distance between the thermal power plant and the sewage treatment plant. From an economic point of view, if the distance exceeds this distance, the co-processing of sewage by the thermal power plant cannot be used. mud. Background technique [0002] In recent years, with the development of my country's social economy and urbanization, urban sewage has been increasing, and how to deal with sludge as a by-product of sewage treatment has become a major problem facing society today. According to statistics, by 2010, there were 2,840 urban sewage treatment plants across the country; statistics in 2013 show that there are now 3,600, and the annual sewage treatment capacity of these sewage treatment plants can reach 34.4 billion cubic meters. And every 10,000 tons of sewage will produce 5 tons of sludge, that i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/12F23G7/00G06F19/00
CPCC02F11/00C02F11/122C02F2303/06F23G7/001F23G2209/12G16Z99/00
Inventor 殷立宝曹通徐齐胜方立军
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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