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Cascade heat exchange thermal hydrolysis reaction device for material mixing and operation method

A technology of material mixing and hydrolysis reaction, which is applied in chemical instruments and methods, water/sludge/sewage treatment, special treatment targets, etc., can solve the problems of increased difficulty of realization, complex devices, etc., to improve heat exchange efficiency and simplify Heat exchange structure, effect of shortening heat exchange time

Active Publication Date: 2021-05-07
北京市科学技术研究院资源环境研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, indirect heat transfer is restricted by factors such as temperature difference, heat transfer area, and heat transfer time. In actual engineering, the device will become extremely complicated and the difficulty of implementation will be increased.

Method used

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  • Cascade heat exchange thermal hydrolysis reaction device for material mixing and operation method

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Embodiment

[0017] Such as figure 1 The shown material mixing cascade heat exchange thermal hydrolysis reaction device is composed of five thermal hydrolysis reactors 1 and circulation pump 2; left valve 1-1 and right valve 1-2 are installed on thermal hydrolysis reactor 1 , the left valve 1-1 is connected with the left three-way 1-3, the right valve 1-2 is connected with the right three-way 1-4, between the left three-way 1-3 and the right three-way 1-4, there is an isolation valve 1 -5; the left valve 1-1 and the right valve 1-2 are connected to the inside of the thermal hydrolysis reactor 1 through pipelines; the thermal hydrolysis reactor 1 is connected with the circulating pump 2 in the following way: the outlet of the circulating pump 2 is connected to the first thermal The left tee 1-3 on the hydrolysis reactor 1 is connected, the right tee 1-4 on the first thermal hydrolysis reactor is connected with the left tee 1-3 on the second thermal hydrolysis reactor 1 , the right tee 1-4 ...

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Abstract

The invention discloses a cascade heat exchange thermal hydrolysis reaction device for material mixing and an operation method. The cascade heat exchange thermal hydrolysis reaction device is formed by connecting more than three thermal hydrolysis reactors and circulating pumps according to a figure; the device is characterized in that the device is provided with a liquid outlet pump; a filter is arranged inside each reactor, and a liquid inlet valve and a liquid outlet valve are arranged outside each reactor and are connected according to a figure; and the operation mode of the reaction device is as follows: materials are added into all reactors, and one reactor is kept in a non-full state. One reactor is heated until the reaction is completed, and solid-liquid separation is performed on the materials in the reactor. The liquid phase is pumped into a reactor with an underfilled space, and heat contained in the liquid is utilized to carry out direct mixed heat exchange with other reactors one by one, so that the heat and the temperature are recovered in a graded manner; and the solid phase, the discharging and the post-feeding are performed, and the space is kept in a non-full state. And then, the steps of heating one reactor are repeated until the reaction is completed and the subsequent steps to form continuous operation.

Description

technical field [0001] The invention relates to thermal hydrolysis reaction equipment, in particular to a sludge thermal hydrolysis reaction device. Background technique [0002] Patent CN 106830603B discloses a cascade heat exchange method. Considering that sludge is a material that is difficult to filter, an indirect heat exchange device is designed. However, indirect heat transfer is restricted by factors such as temperature difference, heat transfer area, and heat transfer time. In actual engineering, the device will become extremely complicated and the difficulty of implementation will be increased. [0003] After reviewing the data, it was found that although the original sludge is a material that is difficult to filter, after the thermal hydrolysis reaction, the degree of inorganicization of the sludge has increased and it has become a material that is easy to filter; at the same time, the sludge is heated Hydrolysis, the mixing of materials with different degrees of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/18
CPCC02F11/18C02F2303/10
Inventor 张建中张成梁姚晶晶郝润琴穆真
Owner 北京市科学技术研究院资源环境研究所
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