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Hydrothermal Carbonization Coupled Double Flash-Organic Rankine Cycle Power Generation System and Power Generation Method

A technology of hydrothermal carbonization and Rankine cycle, applied in chemical instruments and methods, flash evaporation, separation methods, etc., can solve problems such as inability to generate high-grade energy, poor heat and mass transfer performance, and high viscosity of feed materials, and achieve The effect of improving energy quality, reducing moisture content, and reducing energy loss

Active Publication Date: 2021-10-26
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high viscosity of the initial feed material and poor heat and mass transfer performance, the conventional indirect heat transfer efficiency is low.
In addition, the process cannot produce high-grade energy

Method used

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  • Hydrothermal Carbonization Coupled Double Flash-Organic Rankine Cycle Power Generation System and Power Generation Method

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Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, this embodiment provides a hydrothermal carbonization coupled double flash-organic Rankine cycle power generation system, including a hydrothermal carbonization system, a flash steam power generation system and an organic Rankine cycle system, wherein the hydrothermal carbonization system includes a reaction Kettle 1, slurry pump 2, primary flash tank 3 and secondary flash tank 4, the flash steam power generation system includes primary turbine 5, secondary turbine 6, first generator 7 and first Condenser 8; Organic Rankine cycle system includes evaporator 9, turbine 10, second generator 11, internal regenerator 12, working medium pump 13 and second condenser 14;

[0028] Reactor 1 is connected to primary flash tank 3 through slurry pump 2, the concentrated slurry outlet of primary flash tank 3 is connected to secondary flash tank 4, and the steam outlet of primary flash tank 3 is connected to primary The turbine 5, the steam outlet of the se...

Embodiment 2

[0033] This embodiment provides a hydrothermal carbonization coupled double-flash-organic Rankine cycle power generation method, taking municipal solid waste as a raw material for hydrothermal carbonization as an example, including the following steps:

[0034] (1) Hydrothermal carbonization process: Municipal solid waste is mixed with the condensed water after the flash steam has done work to make feed material with a moisture content of 83.3%, pumped into the reactor, and preheated by the previous batch of carbonized gas production. The feeding temperature is 45°C, the hydrothermal carbonization temperature is 270°C, and the reaction time is 2h.

[0035] (2) Flash process: After carbonization, the slurry product is pumped into the primary flash tank at 14.4t / h, the primary flash steam enters the primary turbine, and the wet steam after work is mixed with the secondary flash steam into the The coaxial two-stage turbine works; the primary flash temperature is 174°C, the steam ...

Embodiment 3

[0038] This embodiment provides a hydrothermal carbonization coupled double flash-organic Rankine cycle power generation method, taking corn stalks as a raw material for hydrothermal carbonization as an example, including the following steps:

[0039](1) Hydrothermal carbonization process: corn stalks are mixed with the condensed water after the flash steam has done work to make a feed material with a moisture content of 90%, which is pumped into the reactor and preheated by the previous batch of carbonization to produce gas. The material temperature is 38°C, the hydrothermal carbonization temperature is 200°C, and the reaction time is 1h.

[0040] (2) Flash process: After carbonization, the slurry product is pumped into the primary flash tank at 14.4t / h, the primary flash steam enters the primary turbine, and the wet steam after work is mixed with the secondary flash steam into the The coaxial two-stage turbine works; the primary flash temperature is 135°C, the steam mass flo...

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Abstract

The invention discloses a hydrothermal carbonization coupled double flash-organic Rankine cycle power generation system and method, including a hydrothermal carbonization system, a flash steam power generation system and an organic Rankine cycle system, and the reaction kettle is connected to the first stage through a slurry pump The flash tank, the concentrated slurry outlet of the first flash tank is connected to the second flash tank, the steam outlet of the first flash tank is connected to the first turbine, the steam outlet of the second flash tank is connected to the first turbine The exhaust steam outlet of the flat machine is connected to the second-stage turbine, and the first-stage turbine and the second-stage turbine coaxially drive the first generator to generate electricity; the concentrated slurry outlet of the second-stage flash tank is connected to the evaporator, The steam outlet of the organic working medium of the evaporator is connected to the turbine, and the turbine drives the second generator to generate electricity. The invention efficiently realizes the quality improvement and utilization of the waste heat of the hydrothermally carbonized slurry product, and significantly reduces the moisture content of the hydrothermally carbonized slurry product and the subsequent mechanical dehydration amount and dehydration energy consumption.

Description

technical field [0001] The invention relates to the technical field of waste heat utilization of hydrothermal carbonization solid-liquid products, in particular to a hydrothermal carbonization coupling double flash evaporation-organic Rankine cycle power generation system and a power generation method. Background technique [0002] The research on hydrothermal carbonization can be traced back to the 20th century, and its application is relatively extensive, mainly used in the preparation of carbon materials, carbon-rich fuels, soil fertilizers, etc. [0003] The energy consumption of the hydrothermal carbonization process is high, and the energy input into the process is mainly consumed in the heating of the feed material, the maintenance of the reaction temperature, the mechanical dehydration of the slurry product, the loss of heat dissipation, and the thermal drying of the dehydrated product. Among them, the energy required to heat the hydrothermal feed is relatively large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D15/10F01K11/02F01K25/10F01K27/00F01K17/04C10B53/02C10B57/08B01D3/06B01D3/00F22B3/04
CPCB01D3/007B01D3/065C10B53/02C10B57/08F01D15/10F01K11/02F01K17/04F01K25/10F01K27/00F22B3/04Y02E50/10Y02P20/129
Inventor 王睿坤贾建东陈鸿伟赵争辉雷浩洋靳庆壮
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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