Energy recovery type sludge drying and incineration system

A sludge drying and energy recovery technology, applied in sludge treatment, water/sludge/sewage treatment, sludge treatment through temperature control, etc., can solve the problems of high operating costs, secondary pollution of heavy metals, and high energy consumption , to achieve the effect of high energy utilization rate, lower operating cost and simple system

Pending Publication Date: 2018-01-30
BEIJING AEROSPACE PETROCHEM TECH & EQUIP ENG CORP LTD
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Problems solved by technology

[0004] The present invention proposes a set of energy recovery type sludge drying and incineration system to solve the problems of high energy consumption, high operating cost and secondary pollution of heavy metals existing in the current sludge incineration process

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  • Energy recovery type sludge drying and incineration system

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 As shown, the energy recovery type sludge drying and incineration system of the present invention includes a filter press for sludge dehydration, a paddle dryer for drying, and an organic working medium evaporator for recovering steam generated during the drying process , steam turbine, condenser and working medium pump, fluidized bed incinerator for sludge incineration, heat transfer oil heat exchanger and air preheater for energy recovery, spray for absorbing pickling substances in flue gas towers, activated carbon injectors to absorb dioxins and heavy metals, baghouses to absorb dust.

[0021] The filter press is connected to the paddle dryer, the paddle dryer is connected to the evaporator, the evaporator is connected to the fluidized bed incinerator, the evaporator is connected to the steam turbine, the steam tur...

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Abstract

The invention belongs to the technical field of sludge incineration treatment, and particularly relates to an energy recovery type sludge drying and incineration system. A filter press is connected with a paddle drier, the paddle drier is connected with an evaporator, the evaporator is connected with a fluidized bed incinerator, the evaporator is connected with a steam turbine, the steam turbine is connected with a condenser, the condenser is connected with a working medium pump, the working medium pump is connected with the evaporator, the fluidized bed incinerator is connected with a heat-conduction-oil heat exchanger, the heat-conduction-oil heat exchanger is connected with an air preheater, the heat-conduction-oil heat exchanger is connected with the paddle drier, the air preheater isconnected with the fluidized bed incinerator, the air preheater is connected with a spraying tower, the spraying tower is connected with an activated carbon ejector, and the spraying tower is connected with a bag-type dust collector. The system provided by the invention can be used to solve the problems in a current sludge incineration process that the energy consumption is high, the operation cost is high, and the secondary pollution of heavy metals exists, and the like.

Description

technical field [0001] The invention belongs to the technical field of sludge incineration treatment, and in particular relates to an energy recovery type sludge drying and incineration system. Background technique [0002] Sludge is a by-product produced in the process of urban sewage treatment, with a large output and complex components. By the end of 2014, more than 4,400 urban sewage treatment plants had been built nationwide, and the sewage treatment capacity reached 157 million cubic meters per day. The amount of sludge produced (water content rate of 80%) up to 40 million tons / year, and it is expected that by 2020, the national sludge output will exceed 60 million tons / year. Based on the principles of reduction, stabilization, harmlessness, and resource utilization, sludge treatment and disposal methods mainly include landfill, use as agricultural fertilizer or building materials, and thermal incineration technology. Among them, thermal incineration technology is the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/12C02F11/18F23G7/00B01D53/78B01D46/02
Inventor 赵录辉俞维根王会宁张颖虹孙燕锋刘雁杨斯博
Owner BEIJING AEROSPACE PETROCHEM TECH & EQUIP ENG CORP LTD
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