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Double-pipe heat interchanger suitable for sewage with high solid content

A high solids content, heat exchanger technology, applied in heat exchanger types, indirect heat exchangers, fixed tubular conduit assemblies, etc., can solve the problem of no sewage research and related patents, low convective heat transfer efficiency, and inability to strengthen and other problems, to achieve the effect of no obstruction, low power consumption of pump transmission, and smooth interior

Inactive Publication Date: 2017-01-04
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since there is almost no turbulence in the flat or spiral plate, the enhancement of the heat transfer process cannot be realized. Compared with the circular tube with enhanced heat transfer structure, the convective heat transfer efficiency is low, and a larger heat transfer area is often required.
[0006] On the other hand, the current main twisted structure heat exchange tube is an elliptical twisted tube. Although it has certain advantages in enhancing heat transfer performance, its application objects are limited to single-phase fluids without solid particles, such as sulfuric acid cooling, ammonia preheating, etc. Heat, lubricating oil cooling, etc., there is no research and related patents suitable for sewage

Method used

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  • Double-pipe heat interchanger suitable for sewage with high solid content
  • Double-pipe heat interchanger suitable for sewage with high solid content
  • Double-pipe heat interchanger suitable for sewage with high solid content

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. However, the following description should not be construed as limiting the scope of the present invention.

[0032] The casing type heat exchanger suitable for sewage with high solid content of the present invention is mainly used for treating sewage with a high solid particle content of TS of 4-10% (wt%), and has the functions of anti-scaling and anti-clogging and high heat transfer performance. It includes an inner sleeve and an outer sleeve, the inner sleeve is located inside the outer sleeve, the inner sleeve is mainly used as a sewage channel, and the gap between the inner and outer sleeves forms a heat exchange medium channel.

[0033] Such as image 3As shown, the inner sleeve of the present invention is a triangular twisted tube with a triangular cross section and a tube wall helically deformed in one direction along the central axis of the tube...

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Abstract

The invention discloses a double-pipe heat interchanger suitable for sewage with the high solid content. The double-pipe heat interchanger comprises an inner casing pipe used as a sewage channel, and an outer casing pipe providing a heat exchange medium channel. The inner casing pipe is located in the outer casing pipe. The section of the inner casing pipe is triangular, and the inner casing pipe is a triangular twisted pipe formed by spiraling and deforming the pipe wall in the pipe center axial direction. The double-pipe heat interchanger is suitable for sewage with the high solid content, dirt impurities in the sewage are not prone to scaling on the four walls of the sewage channel or blockage, and the heat exchange efficiency and continuous and stable operation of the heat interchanger are ensured; and the pipe pass and shell pass convective heat transfer efficiency of the heat interchanger is quite high, so that the heat interchanger has high heat transfer enhancement performance, and the power consumption of a process pump is small.

Description

technical field [0001] The invention belongs to the field of heat exchange equipment, and in particular relates to a heat exchange equipment suitable for sewage with high solid particle content. Background technique [0002] The effective treatment of biomass, organic solid waste and domestic sewage can effectively solve the dual crises of energy and environment that our country is currently facing. At present, sewage and sewage treatment projects or process processes, such as large-scale farm biogas projects, municipal sewage fermentation treatment projects, cassava fermentation alcohol engineering wastewater degradation processes, etc., can all achieve the output of an important energy gas - methane, and at the same time To degrade organic matter to reduce air, soil and water pollution. These projects or engineering supporting processes all require heating or temperature control of raw materials, discharge and reaction process. Temperature is the key factor to ensure the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D7/10F28F19/00
CPCF28F1/40F28D7/10
Inventor 王昌松陈晶晶张少鹏韩瑞萍陆小华
Owner NANJING UNIV OF TECH
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