WO2022142184A1 - Forced circulation evaporator for sewage treatment of fossil fuel power plant - Google Patents

Forced circulation evaporator for sewage treatment of fossil fuel power plant Download PDF

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Publication number
WO2022142184A1
WO2022142184A1 PCT/CN2021/101477 CN2021101477W WO2022142184A1 WO 2022142184 A1 WO2022142184 A1 WO 2022142184A1 CN 2021101477 W CN2021101477 W CN 2021101477W WO 2022142184 A1 WO2022142184 A1 WO 2022142184A1
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Prior art keywords
pipe
gas
port
discharge port
liquid
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PCT/CN2021/101477
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French (fr)
Chinese (zh)
Inventor
刘克成
范辉
高燕宁
曾四鸣
车凯
Original Assignee
国网河北省电力有限公司电力科学研究院
国家电网有限公司
国网河北能源技术服务有限公司
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Application filed by 国网河北省电力有限公司电力科学研究院, 国家电网有限公司, 国网河北能源技术服务有限公司 filed Critical 国网河北省电力有限公司电力科学研究院
Publication of WO2022142184A1 publication Critical patent/WO2022142184A1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048—Purification of waste water by evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/043—Details

Definitions

  • the invention relates to the technical field of evaporators, in particular to a forced circulation evaporator used for sewage treatment in thermal power plants.
  • the evaporator is an important part of the four major components of refrigeration.
  • the low-temperature condensed liquid passes through the evaporator to exchange heat with the outside air, vaporizes and absorbs heat, and achieves the effect of refrigeration.
  • the evaporator is mainly composed of a heating chamber and an evaporation chamber.
  • the heating chamber provides the liquid with the heat required for evaporation, and promotes the liquid to boil and vaporize; the evaporation chamber completely separates the gas-liquid two phases
  • the evaporator in the prior art has low efficiency and cannot meet the increasing production and processing needs.
  • the purpose of the present invention is to provide a forced circulation evaporator for waste water treatment in thermal power plants, so as to solve the problems raised in the above background technology.
  • the present invention provides the following technical solutions:
  • a forced circulation evaporator for sewage treatment in thermal power plants comprising a gas-liquid separator, a tubular heat exchanger and a circulating pump; the outer side of the tubular heat exchanger is respectively provided with a steam inlet, a feeding port, and a discharging port.
  • a material pipe and a heating pipe are arranged inside the tubular heat exchanger, the material pipe is respectively connected with the feeding port and the material discharging port, and the heating pipe is respectively connected with the steam inlet and the condensed water discharge port;
  • the discharge port is communicated with the inside of the gas-liquid separator through a liquid inlet pipe.
  • the bottom of the gas-liquid separator is provided with a discharge port, and the discharge port is connected with a discharge pipe.
  • the liquid inlet end of the circulating pump is connected to the discharge port.
  • the pipe is connected, and the discharge end of the circulating pump is communicated with the feeding port through the circulating pipe.
  • the feed port is opened at the bottom of the tubular heat exchanger, and the discharge port is opened at the upper part of the tubular heat exchanger.
  • the top of the gas-liquid separator is provided with a secondary steam discharge port.
  • a filter screen is fixedly installed inside the gas-liquid separator, the filter screen is a V-shaped structure, and two scrapers are installed symmetrically on the left and right sides of the filter screen.
  • a driving mechanism for driving the scraper to move to both sides along the filter screen is also installed.
  • the drive mechanism includes an adjusting screw that is rotatably installed at the bottom of the filter screen, the left and right sides of the adjusting screw are symmetrically provided with two external threads with opposite directions of rotation, and the left and right sides of the adjusting screw are also symmetrically threaded.
  • the connecting rod is a telescopic rod structure.
  • the inside of the gas-liquid separator is also fixedly installed with a drive motor for driving the adjustment screw to rotate, and the drive motor is a deceleration motor.
  • two collecting boxes are symmetrically installed on the left and right sides of the gas-liquid separator, the collecting boxes are communicated with the interior of the gas-liquid separator through a slag discharge port, and the slag discharge port is opened at the upper part of the filter screen sloping end.
  • the heating pipe is of a threaded pipe structure, and the heating pipe is wound around the outer side of the material pipe.
  • the discharge pipe includes an outer pipe and an inner pipe, the inner pipe is arranged inside the outer pipe, and the two ends of the inner pipe are respectively connected with the feeding port and the liquid inlet end of the circulating pump;
  • a preheating layer is arranged between the pipe and the inner pipe, and the condensed water discharge port is communicated with the preheating layer through a water inlet pipe.
  • the present invention feeds the raw material liquid through the feed port, the raw material liquid flows along the material pipe and then is discharged from the discharge port, and the high-temperature steam is introduced into the heating pipe from the steam inlet.
  • the high-temperature steam flows along the heating pipe, exchanges heat with the raw material liquid, and condenses into water, which is discharged from the condensate water discharge port.
  • the gas-liquid separation is carried out inside the liquid separator, and the fluid is discharged from the discharge pipe under the action of gravity, drawn in by the circulating pump, and passed into the feeding port from the circulating pipe to perform multiple heating and gas-liquid separation of the raw material liquid.
  • Evaporation and concentration in chemical, food, pharmaceutical, environmental engineering, waste liquid evaporation and recovery industries such as scaling, crystallinity, high concentration, high viscosity and insoluble solids.
  • Figure 1 is a schematic diagram of the structure of a forced circulation evaporator used for sewage treatment in thermal power plants.
  • FIG. 2 is a schematic structural diagram of a gas-liquid separator in a forced circulation evaporator used for waste water treatment in a thermal power plant.
  • FIG. 3 is a schematic structural diagram of a tubular heat exchanger used in a forced circulation evaporator for waste water treatment in a thermal power plant.
  • Figure 4 is a schematic structural diagram of a discharge pipe in a forced circulation evaporator used for sewage treatment in a thermal power plant.
  • 2-tube heat exchanger 201-steam inlet, 202-feed inlet, 203-discharge outlet, 204-condensate discharge outlet, 205-liquid inlet pipe, 206-water inlet pipe, 207-circulation pipe, 208- Feed pipe, 209-heating pipe, 3-circulation pump, 4-discharge pipe, 401-outer pipe, 402-inner pipe, 403-preheating layer.
  • a forced circulation evaporator for sewage treatment in a thermal power plant includes a gas-liquid separator 1, a tubular heat exchanger 2 and a circulating pump 3; the tubular heat exchanger
  • the outer side of 2 is provided with a steam inlet 201, a feed port 202, a discharge port 203 and a condensed water discharge port 204 respectively.
  • the inside of the tubular heat exchanger 2 is provided with a material pipe 208 and a heating pipe 209.
  • the feeding port 202 and the discharging port 203 are communicated, and the heating pipe 209 is communicated with the steam inlet 201 and the condensed water discharge port 204 respectively.
  • the discharge port 203 It is discharged from the discharge port 203, and the high-temperature steam is introduced into the heating pipe 209 from the steam inlet 201.
  • the high-temperature steam flows along the heating pipe 209, and is condensed into water after heat exchange with the raw material liquid, and is discharged from the condensed water discharge port 204;
  • the discharge port 203 is communicated with the inside of the gas-liquid separator 1 through the liquid inlet pipe 205.
  • the bottom of the gas-liquid separator 1 is provided with a discharge port 102, and the discharge port 102 is connected with the discharge pipe 4.
  • the circulating pump The liquid inlet end of 3 is connected with the discharge pipe 4, the liquid discharge end of the circulating pump 3 is connected with the feeding port 202 through the circulating pipe 207, and the raw material liquid heated by the high temperature steam flows into the gas-liquid separator 1 through the liquid inlet pipe 205. , the raw material liquid is separated from gas and liquid inside the gas-liquid separator 1, and the fluid is discharged from the discharge pipe 4 under the action of gravity, pumped in by the circulating pump 3, and passed into the feeding port 202 from the circulating pipe 207, and the raw material liquid is subjected to Multiple heating and gas-liquid separation.
  • the feed port 202 is opened at the bottom of the tubular heat exchanger 2
  • the discharge port 203 is opened at the upper portion of the tubular heat exchanger 2 .
  • the top of the gas-liquid separator 1 is provided with a secondary steam discharge port 101 .
  • a forced circulation evaporator for sewage treatment in a thermal power plant includes a gas-liquid separator 1, a tubular heat exchanger 2 and a circulating pump 3; the tubular heat exchanger
  • the outer side of 2 is provided with a steam inlet 201, a feed port 202, a discharge port 203 and a condensed water discharge port 204 respectively.
  • the inside of the tubular heat exchanger 2 is provided with a material pipe 208 and a heating pipe 209.
  • the feeding port 202 and the discharging port 203 are communicated, and the heating pipe 209 is communicated with the steam inlet 201 and the condensed water discharge port 204 respectively.
  • the discharge port 203 It is discharged from the discharge port 203, and the high-temperature steam is introduced into the heating pipe 209 from the steam inlet 201.
  • the high-temperature steam flows along the heating pipe 209, and is condensed into water after heat exchange with the raw material liquid, and is discharged from the condensed water discharge port 204;
  • the discharge port 203 is communicated with the inside of the gas-liquid separator 1 through the liquid inlet pipe 205.
  • the bottom of the gas-liquid separator 1 is provided with a discharge port 102, and the discharge port 102 is connected with the discharge pipe 4.
  • the circulating pump The liquid inlet end of 3 is connected with the discharge pipe 4, the liquid discharge end of the circulating pump 3 is connected with the feeding port 202 through the circulating pipe 207, and the raw material liquid heated by the high temperature steam flows into the gas-liquid separator 1 through the liquid inlet pipe 205. , the raw material liquid is separated from gas and liquid inside the gas-liquid separator 1, and the fluid is discharged from the discharge pipe 4 under the action of gravity, pumped in by the circulating pump 3, and passed into the feeding port 202 from the circulating pipe 207, and the raw material liquid is subjected to Multiple heating and gas-liquid separation.
  • the feed port 202 is opened at the bottom of the tubular heat exchanger 2
  • the discharge port 203 is opened at the upper portion of the tubular heat exchanger 2 .
  • the top of the gas-liquid separator 1 is provided with a secondary steam discharge port 101 .
  • a filter screen 105 is fixedly installed inside the gas-liquid separator 1 , the filter screen 105 is a V-shaped structure, and the left and right sides of the filter screen 105 are symmetrical
  • Two scrapers 106 are slidably installed, and a driving mechanism for driving the scraper 106 to move to both sides along the filter screen 105 is also installed inside the gas-liquid separator 1, which drives the scraper 106 to move from bottom to top along the filter screen 105, The impurities in the raw material liquid on the surface of the filter screen 105 are scraped off.
  • the driving mechanism includes an adjustment screw 107 rotatably installed at the bottom of the filter screen 105 , two kinds of external threads with opposite rotation directions are symmetrically arranged on the left and right sides of the adjustment screw 107 , and the left and right sides of the adjustment screw 107 There are also two adjusting screw sleeves 107 symmetrically screwed together.
  • the adjusting screw sleeve 107 is connected with the scraper 106 through the connecting rod 109.
  • the adjusting screw 107 drives the two adjusting screw sleeves 107 to move back, and then drives the scraper 106 through the connecting rod 109. Move along the filter screen 105 .
  • the connecting rod 109 is a telescopic rod structure, and can adjust the length following the movement of the adjusting screw sleeve 107 .
  • a drive motor for driving the adjusting screw 107 to rotate is also fixedly installed inside the gas-liquid separator 1 , and the drive motor is a deceleration motor.
  • two collecting boxes 103 are symmetrically installed on the left and right sides of the gas-liquid separator 1.
  • the collecting boxes 103 communicate with the interior of the gas-liquid separator 1 through the slag discharge port 104, and discharge the
  • the slag port 104 is opened at the upper inclined end of the filter screen 105 for collecting the slag scraped by the scraper 106 .
  • a forced circulation evaporator for sewage treatment in a thermal power plant includes a gas-liquid separator 1, a tubular heat exchanger 2 and a circulating pump 3; the tubular heat exchanger
  • the outer side of 2 is provided with a steam inlet 201, a feed port 202, a discharge port 203 and a condensed water discharge port 204 respectively.
  • the inside of the tubular heat exchanger 2 is provided with a material pipe 208 and a heating pipe 209.
  • the feeding port 202 and the discharging port 203 are communicated, and the heating pipe 209 is communicated with the steam inlet 201 and the condensed water discharge port 204 respectively.
  • the discharge port 203 It is discharged from the discharge port 203, and the high-temperature steam is introduced into the heating pipe 209 from the steam inlet 201.
  • the high-temperature steam flows along the heating pipe 209, and is condensed into water after heat exchange with the raw material liquid, and is discharged from the condensed water discharge port 204;
  • the discharge port 203 is communicated with the inside of the gas-liquid separator 1 through the liquid inlet pipe 205.
  • the bottom of the gas-liquid separator 1 is provided with a discharge port 102, and the discharge port 102 is connected with the discharge pipe 4.
  • the circulating pump The liquid inlet end of 3 is connected with the discharge pipe 4, the liquid discharge end of the circulating pump 3 is connected with the feeding port 202 through the circulating pipe 207, and the raw material liquid heated by the high temperature steam flows into the gas-liquid separator 1 through the liquid inlet pipe 205. , the raw material liquid is separated from gas and liquid inside the gas-liquid separator 1, and the fluid is discharged from the discharge pipe 4 under the action of gravity, pumped in by the circulating pump 3, and passed into the feeding port 202 from the circulating pipe 207, and the raw material liquid is subjected to Multiple heating and gas-liquid separation.
  • the feed port 202 is opened at the bottom of the tubular heat exchanger 2
  • the discharge port 203 is opened at the upper portion of the tubular heat exchanger 2 .
  • the top of the gas-liquid separator 1 is provided with a secondary steam discharge port 101 .
  • a filter screen 105 is fixedly installed inside the gas-liquid separator 1 , the filter screen 105 is a V-shaped structure, and the left and right sides of the filter screen 105 are symmetrical
  • Two scrapers 106 are slidably installed, and a driving mechanism for driving the scraper 106 to move to both sides along the filter screen 105 is also installed inside the gas-liquid separator 1, which drives the scraper 106 to move from bottom to top along the filter screen 105, The impurities in the raw material liquid on the surface of the filter screen 105 are scraped off.
  • the driving mechanism includes an adjustment screw 107 rotatably installed at the bottom of the filter screen 105 , two kinds of external threads with opposite rotation directions are symmetrically arranged on the left and right sides of the adjustment screw 107 , and the left and right sides of the adjustment screw 107 There are also two adjusting screw sleeves 107 symmetrically screwed together.
  • the adjusting screw sleeve 107 is connected with the scraper 106 through the connecting rod 109.
  • the adjusting screw 107 drives the two adjusting screw sleeves 107 to move back, and then drives the scraper 106 through the connecting rod 109. Move along the filter screen 105 .
  • the connecting rod 109 is a telescopic rod structure, and can adjust the length following the movement of the adjusting screw sleeve 107 .
  • a drive motor for driving the adjusting screw 107 to rotate is also fixedly installed inside the gas-liquid separator 1 , and the drive motor is a deceleration motor.
  • two collecting boxes 103 are symmetrically installed on the left and right sides of the gas-liquid separator 1.
  • the collecting boxes 103 communicate with the interior of the gas-liquid separator 1 through the slag discharge port 104, and discharge the
  • the slag port 104 is opened at the upper inclined end of the filter screen 105 for collecting the slag scraped by the scraper 106 .
  • the heating pipe 209 is a threaded pipe structure, and the heating pipe 209 is wound around the outer side of the material pipe 208 , improve the contact efficiency of high temperature steam and raw material liquid, and then speed up the heating speed of raw material liquid.
  • the discharge pipe 4 includes an outer pipe 401 and an inner pipe 402, the inner pipe 402 is arranged inside the outer pipe 401, and the two ends of the inner pipe 402 are respectively connected to the discharge port 102 and the circulating pump.
  • the liquid inlet end of 3 is connected; a preheating layer 403 is provided between the outer pipe 401 and the inner pipe 402, and the condensed water discharge port 204 is communicated with the preheating layer 403 through the water inlet pipe 206, and the condensed water has a certain temperature, and the After entering the preheating layer 403, the raw material liquid is preheated to speed up the temperature raising speed of the raw material liquid, and at the same time save energy and avoid waste of thermal energy in the condensed water.
  • the raw material liquid is introduced from the feeding port, the raw material liquid flows along the material pipe and then is discharged from the discharging port, and the high-temperature steam is introduced into the heating pipe from the steam inlet, and the high-temperature steam flows along the heating pipe to exchange heat with the raw material liquid. After condensing into water, it is discharged from the condensate water outlet.
  • the raw material liquid heated by high temperature steam flows into the gas-liquid separator through the liquid inlet pipe, and the raw material liquid is separated into gas and liquid inside the gas-liquid separator.
  • the fluid is under the action of gravity.

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

Disclosed in the present invention is a forced circulation evaporator for the sewage treatment of a fossil fuel power plant, comprising: a gas-liquid separator, a tubular heat exchanger, and a circulating pump. A steam inlet, a material feed port, a material discharge port, and a condensate water discharge port are respectively formed on the outer side of the tubular heat exchanger; a material pipe and a heating pipe are provided inside the tubular heat exchanger; the material pipe is communicated with the material feed port and the material discharge port, respectively; the heating pipe is communicated with the steam inlet and the condensed water discharge port, respectively; the material discharge port is communicated with the interior of the gas-liquid separator through a liquid feed pipe; a material downflow port is formed at the bottom of the gas-liquid separator; the material downflow port is communicated with a material discharge pipe; and a liquid feed end of the circulating pump is communicated with the material discharge pipe, and a liquid discharge end of the circulating pump is communicated with the material feed port through a circulating pipe. The present invention performs multiple heating and gas-liquid separation on a raw material solution, and is suitable for the evaporation and concentration in industries such as chemical engineering, food, pharmacy, environmental protection engineering, and waste liquid evaporation recovery concerning fouling, crystallinity, high concentration, high viscosity, and insoluble solids.

Description

一种用于火电厂污水处理用强制循环蒸发器A forced circulation evaporator for sewage treatment in thermal power plants 技术领域technical field
本发明涉及蒸发器技术领域，具体是一种用于火电厂污水处理用强制循环蒸发器。The invention relates to the technical field of evaporators, in particular to a forced circulation evaporator used for sewage treatment in thermal power plants.
背景技术Background technique
蒸发器是制冷四大件中重要的部件，低温的冷凝液体通过蒸发器，与外界的空气进行热交换，气化吸热，达到制冷的效果。The evaporator is an important part of the four major components of refrigeration. The low-temperature condensed liquid passes through the evaporator to exchange heat with the outside air, vaporizes and absorbs heat, and achieves the effect of refrigeration.
蒸发器主要由加热室和蒸发室两部分组成。加热室向液体提供蒸发所需要的热量，促使液体沸腾汽化；蒸发室使气液两相完全分离The evaporator is mainly composed of a heating chamber and an evaporation chamber. The heating chamber provides the liquid with the heat required for evaporation, and promotes the liquid to boil and vaporize; the evaporation chamber completely separates the gas-liquid two phases
现有技术中的蒸发器效率低下，无法满足日益增长的生产加工需求，针对以上现状，迫切需要开发一种用于火电厂污水处理用强制循环蒸发器，以克服当前实际应用中的不足。The evaporator in the prior art has low efficiency and cannot meet the increasing production and processing needs. In view of the above situation, it is urgent to develop a forced circulation evaporator for sewage treatment in thermal power plants to overcome the deficiencies in current practical applications.
技术问题technical problem
本发明的目的在于提供一种用于火电厂污水处理用强制循环蒸发器，以解决上述背景技术中提出的问题。The purpose of the present invention is to provide a forced circulation evaporator for waste water treatment in thermal power plants, so as to solve the problems raised in the above background technology.
技术解决方案technical solutions
为实现上述目的，本发明提供如下技术方案：To achieve the above object, the present invention provides the following technical solutions:
一种用于火电厂污水处理用强制循环蒸发器，包括气液分离器、管式换热器和循环泵；所述管式换热器的外侧分别开设有蒸汽入口、进料口、排料口和冷凝水排出口，所述管式换热器的内部设置有料管和加热管，料管分别与进料口、排料口连通，加热管分别与蒸汽入口、冷凝水排出口连通；所述排料口通过进液管与气液分离器内部连通，所述气液分离器的底部开设有下料口，下料口连通有排料管，所述循环泵的进液端与排料管连通，循环泵的排液端通过循环管与进料口连通。A forced circulation evaporator for sewage treatment in thermal power plants, comprising a gas-liquid separator, a tubular heat exchanger and a circulating pump; the outer side of the tubular heat exchanger is respectively provided with a steam inlet, a feeding port, and a discharging port. A material pipe and a heating pipe are arranged inside the tubular heat exchanger, the material pipe is respectively connected with the feeding port and the material discharging port, and the heating pipe is respectively connected with the steam inlet and the condensed water discharge port; The discharge port is communicated with the inside of the gas-liquid separator through a liquid inlet pipe. The bottom of the gas-liquid separator is provided with a discharge port, and the discharge port is connected with a discharge pipe. The liquid inlet end of the circulating pump is connected to the discharge port. The pipe is connected, and the discharge end of the circulating pump is communicated with the feeding port through the circulating pipe.
作为本发明进一步的方案：所述进料口开设于管式换热器的底部，排料口开设于管式换热器的上部。As a further solution of the present invention: the feed port is opened at the bottom of the tubular heat exchanger, and the discharge port is opened at the upper part of the tubular heat exchanger.
作为本发明进一步的方案：所述气液分离器的顶部开设有二次蒸汽排出口。As a further solution of the present invention: the top of the gas-liquid separator is provided with a secondary steam discharge port.
作为本发明进一步的方案：所述气液分离器内部固定安装有过滤网，过滤网为V型结构，且过滤网的左右两侧对称滑动安装有两个刮板，所述气液分离器内部还安装有驱动刮板沿过滤网向两侧移动的驱动机构。As a further solution of the present invention: a filter screen is fixedly installed inside the gas-liquid separator, the filter screen is a V-shaped structure, and two scrapers are installed symmetrically on the left and right sides of the filter screen. A driving mechanism for driving the scraper to move to both sides along the filter screen is also installed.
作为本发明进一步的方案：所述驱动机构包括转动安装于过滤网底部的调节螺杆，调节螺杆的左右两侧对称设置有两种旋向相反的外螺纹，调节螺杆的左右两侧还对称螺纹连接有两个调节螺套，调节螺套通过连接杆与刮板连接。As a further solution of the present invention: the drive mechanism includes an adjusting screw that is rotatably installed at the bottom of the filter screen, the left and right sides of the adjusting screw are symmetrically provided with two external threads with opposite directions of rotation, and the left and right sides of the adjusting screw are also symmetrically threaded. There are two adjusting screw sleeves, and the adjusting screw sleeve is connected with the scraper through the connecting rod.
作为本发明进一步的方案：所述连接杆为伸缩杆结构。As a further solution of the present invention: the connecting rod is a telescopic rod structure.
作为本发明进一步的方案：所述气液分离器的内部还固定安装有驱动调节螺杆转动的驱动电机，驱动电机为减速电机。As a further solution of the present invention: the inside of the gas-liquid separator is also fixedly installed with a drive motor for driving the adjustment screw to rotate, and the drive motor is a deceleration motor.
作为本发明进一步的方案：所述气液分离器的左右两侧对称安装有两个集料盒，集料盒通过排渣口与气液分离器的内部连通，排渣口开设于过滤网上部倾斜端。As a further solution of the present invention: two collecting boxes are symmetrically installed on the left and right sides of the gas-liquid separator, the collecting boxes are communicated with the interior of the gas-liquid separator through a slag discharge port, and the slag discharge port is opened at the upper part of the filter screen sloping end.
作为本发明进一步的方案：所述加热管为螺纹管结构，加热管绕设于料管的外侧。As a further solution of the present invention, the heating pipe is of a threaded pipe structure, and the heating pipe is wound around the outer side of the material pipe.
作为本发明进一步的方案：所述排料管包括外管和内管，内管设置于外管内部，且内管的两端分别与下料口、循环泵的进液端连通；所述外管和内管之间设置有预热层，所述冷凝水排出口通过进水管与预热层连通。As a further solution of the present invention: the discharge pipe includes an outer pipe and an inner pipe, the inner pipe is arranged inside the outer pipe, and the two ends of the inner pipe are respectively connected with the feeding port and the liquid inlet end of the circulating pump; A preheating layer is arranged between the pipe and the inner pipe, and the condensed water discharge port is communicated with the preheating layer through a water inlet pipe.
有益效果beneficial effect
与现有技术相比，本发明的有益效果是：本发明将原料液由进料口通入，原料液沿料管流动后从排料口排出，由蒸汽入口向加热管内部通入高温蒸汽，高温蒸汽沿加热管流动，与原料液进行热交换后冷凝成水，并从冷凝水排出口排出，经过高温蒸汽加热后的原料液由进液管流入气液分离器内部，原料液在气液分离器内部进行气液分离，流体在重力作用下从排料管排出，由循环泵抽入，并从循环管通入进料口，对原料液进行多次加热和气液分离，适用于有结垢性、结晶性、高浓度、高粘度并且含不溶性固形物等化工、食品、制药、环保工程、废液蒸发回收等行业的蒸发浓缩。Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention feeds the raw material liquid through the feed port, the raw material liquid flows along the material pipe and then is discharged from the discharge port, and the high-temperature steam is introduced into the heating pipe from the steam inlet. , the high-temperature steam flows along the heating pipe, exchanges heat with the raw material liquid, and condenses into water, which is discharged from the condensate water discharge port. The gas-liquid separation is carried out inside the liquid separator, and the fluid is discharged from the discharge pipe under the action of gravity, drawn in by the circulating pump, and passed into the feeding port from the circulating pipe to perform multiple heating and gas-liquid separation of the raw material liquid. Evaporation and concentration in chemical, food, pharmaceutical, environmental engineering, waste liquid evaporation and recovery industries such as scaling, crystallinity, high concentration, high viscosity and insoluble solids.
附图说明Description of drawings
图1为用于火电厂污水处理用强制循环蒸发器的结构示意图。Figure 1 is a schematic diagram of the structure of a forced circulation evaporator used for sewage treatment in thermal power plants.
图2为用于火电厂污水处理用强制循环蒸发器中气液分离器的结构示意图。FIG. 2 is a schematic structural diagram of a gas-liquid separator in a forced circulation evaporator used for waste water treatment in a thermal power plant.
图3为用于火电厂污水处理用强制循环蒸发器中管式换热器的结构示意图。FIG. 3 is a schematic structural diagram of a tubular heat exchanger used in a forced circulation evaporator for waste water treatment in a thermal power plant.
图4为用于火电厂污水处理用强制循环蒸发器中排料管的结构示意图。Figure 4 is a schematic structural diagram of a discharge pipe in a forced circulation evaporator used for sewage treatment in a thermal power plant.
图中：1-气液分离器、101-二次蒸汽排出口、102-下料口、103-集料盒、104-排渣口、105-过滤网、106-刮板、107-调节螺杆、108-调节螺套、109-连接杆、In the picture: 1-gas-liquid separator, 101-secondary steam outlet, 102-feeding port, 103-collecting box, 104-slag discharge port, 105-filter screen, 106-scraper, 107-adjusting screw , 108-adjusting screw sleeve, 109-connecting rod,
2-管式换热器、201-蒸汽入口、202-进料口、203-排料口、204-冷凝水排出口、205-进液管、206-进水管、207-循环管、208-料管、209-加热管、3-循环泵、4-排料管、401-外管、402-内管、403-预热层。2-tube heat exchanger, 201-steam inlet, 202-feed inlet, 203-discharge outlet, 204-condensate discharge outlet, 205-liquid inlet pipe, 206-water inlet pipe, 207-circulation pipe, 208- Feed pipe, 209-heating pipe, 3-circulation pump, 4-discharge pipe, 401-outer pipe, 402-inner pipe, 403-preheating layer.
本发明的实施方式Embodiments of the present invention
下面结合具体实施方式对本专利的技术方案作进一步详细地说明。The technical solution of the present patent will be described in further detail below in conjunction with specific embodiments.
下面详细描述本专利的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本专利，而不能理解为对本专利的限制。Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present patent, but should not be construed as a limitation on the present patent.
在本专利的描述中，需要理解的是，术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本专利和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本专利的限制。In the description of this patent, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present patent and simplifying the description, rather than indicating or implying The device or element referred to must have, be constructed, and operate in a particular orientation and is not to be construed as a limitation of this patent.
在本专利的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“设置”应做广义理解，例如，可以是固定相连、设置，也可以是可拆卸连接、设置，或一体地连接、设置。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本专利中的具体含义。In the description of this patent, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected" and "arranged" should be understood in a broad sense. , it can also be detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific situations.
实施例1Example 1
请参阅图1，本发明实施例中，一种用于火电厂污水处理用强制循环蒸发器，包括气液分离器1、管式换热器2和循环泵3；所述管式换热器2的外侧分别开设有蒸汽入口201、进料口202、排料口203和冷凝水排出口204，所述管式换热器2的内部设置有料管208和加热管209，料管208分别与进料口202、排料口203连通，加热管209分别与蒸汽入口201、冷凝水排出口204连通，由进料口202向料管208内部通入原料液，原料液沿料管208流动后从排料口203排出，由蒸汽入口201向加热管209内部通入高温蒸汽，高温蒸汽沿加热管209流动，与原料液进行热交换后冷凝成水，并从冷凝水排出口204排出；所述排料口203通过进液管205与气液分离器1内部连通，所述气液分离器1的底部开设有下料口102，下料口102连通有排料管4，所述循环泵3的进液端与排料管4连通，循环泵3的排液端通过循环管207与进料口202连通，经过高温蒸汽加热后的原料液由进液管205流入气液分离器1内部，原料液在气液分离器1内部进行气液分离，流体在重力作用下从排料管4排出，由循环泵3抽入，并从循环管207通入进料口202，对原料液进行多次加热和气液分离。Referring to FIG. 1, in the embodiment of the present invention, a forced circulation evaporator for sewage treatment in a thermal power plant includes a gas-liquid separator 1, a tubular heat exchanger 2 and a circulating pump 3; the tubular heat exchanger The outer side of 2 is provided with a steam inlet 201, a feed port 202, a discharge port 203 and a condensed water discharge port 204 respectively. The inside of the tubular heat exchanger 2 is provided with a material pipe 208 and a heating pipe 209. The feeding port 202 and the discharging port 203 are communicated, and the heating pipe 209 is communicated with the steam inlet 201 and the condensed water discharge port 204 respectively. It is discharged from the discharge port 203, and the high-temperature steam is introduced into the heating pipe 209 from the steam inlet 201. The high-temperature steam flows along the heating pipe 209, and is condensed into water after heat exchange with the raw material liquid, and is discharged from the condensed water discharge port 204; The discharge port 203 is communicated with the inside of the gas-liquid separator 1 through the liquid inlet pipe 205. The bottom of the gas-liquid separator 1 is provided with a discharge port 102, and the discharge port 102 is connected with the discharge pipe 4. The circulating pump The liquid inlet end of 3 is connected with the discharge pipe 4, the liquid discharge end of the circulating pump 3 is connected with the feeding port 202 through the circulating pipe 207, and the raw material liquid heated by the high temperature steam flows into the gas-liquid separator 1 through the liquid inlet pipe 205. , the raw material liquid is separated from gas and liquid inside the gas-liquid separator 1, and the fluid is discharged from the discharge pipe 4 under the action of gravity, pumped in by the circulating pump 3, and passed into the feeding port 202 from the circulating pipe 207, and the raw material liquid is subjected to Multiple heating and gas-liquid separation.
在本发明实施例中，所述进料口202开设于管式换热器2的底部，排料口203开设于管式换热器2的上部。In the embodiment of the present invention, the feed port 202 is opened at the bottom of the tubular heat exchanger 2 , and the discharge port 203 is opened at the upper portion of the tubular heat exchanger 2 .
在本发明实施例中，所述气液分离器1的顶部开设有二次蒸汽排出口101，原料液在气液分离器1内部进行气液分离时，蒸汽由二次蒸汽排出口101排出。In the embodiment of the present invention, the top of the gas-liquid separator 1 is provided with a secondary steam discharge port 101 .
实施例2Example 2
请参阅图1，本发明实施例中，一种用于火电厂污水处理用强制循环蒸发器，包括气液分离器1、管式换热器2和循环泵3；所述管式换热器2的外侧分别开设有蒸汽入口201、进料口202、排料口203和冷凝水排出口204，所述管式换热器2的内部设置有料管208和加热管209，料管208分别与进料口202、排料口203连通，加热管209分别与蒸汽入口201、冷凝水排出口204连通，由进料口202向料管208内部通入原料液，原料液沿料管208流动后从排料口203排出，由蒸汽入口201向加热管209内部通入高温蒸汽，高温蒸汽沿加热管209流动，与原料液进行热交换后冷凝成水，并从冷凝水排出口204排出；所述排料口203通过进液管205与气液分离器1内部连通，所述气液分离器1的底部开设有下料口102，下料口102连通有排料管4，所述循环泵3的进液端与排料管4连通，循环泵3的排液端通过循环管207与进料口202连通，经过高温蒸汽加热后的原料液由进液管205流入气液分离器1内部，原料液在气液分离器1内部进行气液分离，流体在重力作用下从排料管4排出，由循环泵3抽入，并从循环管207通入进料口202，对原料液进行多次加热和气液分离。Referring to FIG. 1, in the embodiment of the present invention, a forced circulation evaporator for sewage treatment in a thermal power plant includes a gas-liquid separator 1, a tubular heat exchanger 2 and a circulating pump 3; the tubular heat exchanger The outer side of 2 is provided with a steam inlet 201, a feed port 202, a discharge port 203 and a condensed water discharge port 204 respectively. The inside of the tubular heat exchanger 2 is provided with a material pipe 208 and a heating pipe 209. The feeding port 202 and the discharging port 203 are communicated, and the heating pipe 209 is communicated with the steam inlet 201 and the condensed water discharge port 204 respectively. It is discharged from the discharge port 203, and the high-temperature steam is introduced into the heating pipe 209 from the steam inlet 201. The high-temperature steam flows along the heating pipe 209, and is condensed into water after heat exchange with the raw material liquid, and is discharged from the condensed water discharge port 204; The discharge port 203 is communicated with the inside of the gas-liquid separator 1 through the liquid inlet pipe 205. The bottom of the gas-liquid separator 1 is provided with a discharge port 102, and the discharge port 102 is connected with the discharge pipe 4. The circulating pump The liquid inlet end of 3 is connected with the discharge pipe 4, the liquid discharge end of the circulating pump 3 is connected with the feeding port 202 through the circulating pipe 207, and the raw material liquid heated by the high temperature steam flows into the gas-liquid separator 1 through the liquid inlet pipe 205. , the raw material liquid is separated from gas and liquid inside the gas-liquid separator 1, and the fluid is discharged from the discharge pipe 4 under the action of gravity, pumped in by the circulating pump 3, and passed into the feeding port 202 from the circulating pipe 207, and the raw material liquid is subjected to Multiple heating and gas-liquid separation.
在本发明实施例中，所述进料口202开设于管式换热器2的底部，排料口203开设于管式换热器2的上部。In the embodiment of the present invention, the feed port 202 is opened at the bottom of the tubular heat exchanger 2 , and the discharge port 203 is opened at the upper portion of the tubular heat exchanger 2 .
在本发明实施例中，所述气液分离器1的顶部开设有二次蒸汽排出口101，原料液在气液分离器1内部进行气液分离时，蒸汽由二次蒸汽排出口101排出。In the embodiment of the present invention, the top of the gas-liquid separator 1 is provided with a secondary steam discharge port 101 .
请参阅图2，本实施例与实施例1的不同之处在于：所述气液分离器1内部固定安装有过滤网105，过滤网105为V型结构，且过滤网105的左右两侧对称滑动安装有两个刮板106，所述气液分离器1内部还安装有驱动刮板106沿过滤网105向两侧移动的驱动机构，带动刮板106沿过滤网105自下而上移动，刮除过滤网105表面原料液中的杂质。Referring to FIG. 2 , the difference between this embodiment and Embodiment 1 is that a filter screen 105 is fixedly installed inside the gas-liquid separator 1 , the filter screen 105 is a V-shaped structure, and the left and right sides of the filter screen 105 are symmetrical Two scrapers 106 are slidably installed, and a driving mechanism for driving the scraper 106 to move to both sides along the filter screen 105 is also installed inside the gas-liquid separator 1, which drives the scraper 106 to move from bottom to top along the filter screen 105, The impurities in the raw material liquid on the surface of the filter screen 105 are scraped off.
在本发明实施例中，所述驱动机构包括转动安装于过滤网105底部的调节螺杆107，调节螺杆107的左右两侧对称设置有两种旋向相反的外螺纹，调节螺杆107的左右两侧还对称螺纹连接有两个调节螺套107，调节螺套107通过连接杆109与刮板106连接，由调节螺杆107带动两个调节螺套107背向移动，进而通过连接杆109带动刮板106沿过滤网105移动。In the embodiment of the present invention, the driving mechanism includes an adjustment screw 107 rotatably installed at the bottom of the filter screen 105 , two kinds of external threads with opposite rotation directions are symmetrically arranged on the left and right sides of the adjustment screw 107 , and the left and right sides of the adjustment screw 107 There are also two adjusting screw sleeves 107 symmetrically screwed together. The adjusting screw sleeve 107 is connected with the scraper 106 through the connecting rod 109. The adjusting screw 107 drives the two adjusting screw sleeves 107 to move back, and then drives the scraper 106 through the connecting rod 109. Move along the filter screen 105 .
需要说明的是，在本发明实施例中，所述连接杆109为伸缩杆结构，能够跟随调节螺套107的移动进行长度调节。It should be noted that, in the embodiment of the present invention, the connecting rod 109 is a telescopic rod structure, and can adjust the length following the movement of the adjusting screw sleeve 107 .
进一步需要说明的是，在本发明实施例中，所述气液分离器1的内部还固定安装有驱动调节螺杆107转动的驱动电机，驱动电机为减速电机。It should be further noted that, in the embodiment of the present invention, a drive motor for driving the adjusting screw 107 to rotate is also fixedly installed inside the gas-liquid separator 1 , and the drive motor is a deceleration motor.
在本发明又一实施例中，所述气液分离器1的左右两侧对称安装有两个集料盒103，集料盒103通过排渣口104与气液分离器1的内部连通，排渣口104开设于过滤网105上部倾斜端，用于收集刮板106刮除的残渣。In yet another embodiment of the present invention, two collecting boxes 103 are symmetrically installed on the left and right sides of the gas-liquid separator 1. The collecting boxes 103 communicate with the interior of the gas-liquid separator 1 through the slag discharge port 104, and discharge the The slag port 104 is opened at the upper inclined end of the filter screen 105 for collecting the slag scraped by the scraper 106 .
实施例3Example 3
请参阅图1，本发明实施例中，一种用于火电厂污水处理用强制循环蒸发器，包括气液分离器1、管式换热器2和循环泵3；所述管式换热器2的外侧分别开设有蒸汽入口201、进料口202、排料口203和冷凝水排出口204，所述管式换热器2的内部设置有料管208和加热管209，料管208分别与进料口202、排料口203连通，加热管209分别与蒸汽入口201、冷凝水排出口204连通，由进料口202向料管208内部通入原料液，原料液沿料管208流动后从排料口203排出，由蒸汽入口201向加热管209内部通入高温蒸汽，高温蒸汽沿加热管209流动，与原料液进行热交换后冷凝成水，并从冷凝水排出口204排出；所述排料口203通过进液管205与气液分离器1内部连通，所述气液分离器1的底部开设有下料口102，下料口102连通有排料管4，所述循环泵3的进液端与排料管4连通，循环泵3的排液端通过循环管207与进料口202连通，经过高温蒸汽加热后的原料液由进液管205流入气液分离器1内部，原料液在气液分离器1内部进行气液分离，流体在重力作用下从排料管4排出，由循环泵3抽入，并从循环管207通入进料口202，对原料液进行多次加热和气液分离。Referring to FIG. 1, in the embodiment of the present invention, a forced circulation evaporator for sewage treatment in a thermal power plant includes a gas-liquid separator 1, a tubular heat exchanger 2 and a circulating pump 3; the tubular heat exchanger The outer side of 2 is provided with a steam inlet 201, a feed port 202, a discharge port 203 and a condensed water discharge port 204 respectively. The inside of the tubular heat exchanger 2 is provided with a material pipe 208 and a heating pipe 209. The feeding port 202 and the discharging port 203 are communicated, and the heating pipe 209 is communicated with the steam inlet 201 and the condensed water discharge port 204 respectively. It is discharged from the discharge port 203, and the high-temperature steam is introduced into the heating pipe 209 from the steam inlet 201. The high-temperature steam flows along the heating pipe 209, and is condensed into water after heat exchange with the raw material liquid, and is discharged from the condensed water discharge port 204; The discharge port 203 is communicated with the inside of the gas-liquid separator 1 through the liquid inlet pipe 205. The bottom of the gas-liquid separator 1 is provided with a discharge port 102, and the discharge port 102 is connected with the discharge pipe 4. The circulating pump The liquid inlet end of 3 is connected with the discharge pipe 4, the liquid discharge end of the circulating pump 3 is connected with the feeding port 202 through the circulating pipe 207, and the raw material liquid heated by the high temperature steam flows into the gas-liquid separator 1 through the liquid inlet pipe 205. , the raw material liquid is separated from gas and liquid inside the gas-liquid separator 1, and the fluid is discharged from the discharge pipe 4 under the action of gravity, pumped in by the circulating pump 3, and passed into the feeding port 202 from the circulating pipe 207, and the raw material liquid is subjected to Multiple heating and gas-liquid separation.
在本发明实施例中，所述进料口202开设于管式换热器2的底部，排料口203开设于管式换热器2的上部。In the embodiment of the present invention, the feed port 202 is opened at the bottom of the tubular heat exchanger 2 , and the discharge port 203 is opened at the upper portion of the tubular heat exchanger 2 .
在本发明实施例中，所述气液分离器1的顶部开设有二次蒸汽排出口101，原料液在气液分离器1内部进行气液分离时，蒸汽由二次蒸汽排出口101排出。In the embodiment of the present invention, the top of the gas-liquid separator 1 is provided with a secondary steam discharge port 101 .
请参阅图2，本实施例与实施例1的不同之处在于：所述气液分离器1内部固定安装有过滤网105，过滤网105为V型结构，且过滤网105的左右两侧对称滑动安装有两个刮板106，所述气液分离器1内部还安装有驱动刮板106沿过滤网105向两侧移动的驱动机构，带动刮板106沿过滤网105自下而上移动，刮除过滤网105表面原料液中的杂质。Referring to FIG. 2 , the difference between this embodiment and Embodiment 1 is that a filter screen 105 is fixedly installed inside the gas-liquid separator 1 , the filter screen 105 is a V-shaped structure, and the left and right sides of the filter screen 105 are symmetrical Two scrapers 106 are slidably installed, and a driving mechanism for driving the scraper 106 to move to both sides along the filter screen 105 is also installed inside the gas-liquid separator 1, which drives the scraper 106 to move from bottom to top along the filter screen 105, The impurities in the raw material liquid on the surface of the filter screen 105 are scraped off.
在本发明实施例中，所述驱动机构包括转动安装于过滤网105底部的调节螺杆107，调节螺杆107的左右两侧对称设置有两种旋向相反的外螺纹，调节螺杆107的左右两侧还对称螺纹连接有两个调节螺套107，调节螺套107通过连接杆109与刮板106连接，由调节螺杆107带动两个调节螺套107背向移动，进而通过连接杆109带动刮板106沿过滤网105移动。In the embodiment of the present invention, the driving mechanism includes an adjustment screw 107 rotatably installed at the bottom of the filter screen 105 , two kinds of external threads with opposite rotation directions are symmetrically arranged on the left and right sides of the adjustment screw 107 , and the left and right sides of the adjustment screw 107 There are also two adjusting screw sleeves 107 symmetrically screwed together. The adjusting screw sleeve 107 is connected with the scraper 106 through the connecting rod 109. The adjusting screw 107 drives the two adjusting screw sleeves 107 to move back, and then drives the scraper 106 through the connecting rod 109. Move along the filter screen 105 .
需要说明的是，在本发明实施例中，所述连接杆109为伸缩杆结构，能够跟随调节螺套107的移动进行长度调节。It should be noted that, in the embodiment of the present invention, the connecting rod 109 is a telescopic rod structure, and can adjust the length following the movement of the adjusting screw sleeve 107 .
进一步需要说明的是，在本发明实施例中，所述气液分离器1的内部还固定安装有驱动调节螺杆107转动的驱动电机，驱动电机为减速电机。It should be further noted that, in the embodiment of the present invention, a drive motor for driving the adjusting screw 107 to rotate is also fixedly installed inside the gas-liquid separator 1 , and the drive motor is a deceleration motor.
在本发明又一实施例中，所述气液分离器1的左右两侧对称安装有两个集料盒103，集料盒103通过排渣口104与气液分离器1的内部连通，排渣口104开设于过滤网105上部倾斜端，用于收集刮板106刮除的残渣。In yet another embodiment of the present invention, two collecting boxes 103 are symmetrically installed on the left and right sides of the gas-liquid separator 1. The collecting boxes 103 communicate with the interior of the gas-liquid separator 1 through the slag discharge port 104, and discharge the The slag port 104 is opened at the upper inclined end of the filter screen 105 for collecting the slag scraped by the scraper 106 .
请参阅图3-4，本实施例与实施例1-2的不同之处在于：在本发明实施例中，所述加热管209为螺纹管结构，加热管209绕设于料管208的外侧，提高高温蒸汽与原料液的接触效率，进而加快原料液的加热速度。Please refer to FIGS. 3-4 . The difference between this embodiment and Embodiment 1-2 is that: in the embodiment of the present invention, the heating pipe 209 is a threaded pipe structure, and the heating pipe 209 is wound around the outer side of the material pipe 208 , improve the contact efficiency of high temperature steam and raw material liquid, and then speed up the heating speed of raw material liquid.
在本发明又一实施例中，所述排料管4包括外管401和内管402，内管402设置于外管401内部，且内管402的两端分别与下料口102、循环泵3的进液端连通；所述外管401和内管402之间设置有预热层403，所述冷凝水排出口204通过进水管206与预热层403连通，冷凝水具有一定温度，通入预热层403后对原料液进行预加热，加快原料液的提温速度，同时节约能源，避免冷凝水中的热能浪费。In another embodiment of the present invention, the discharge pipe 4 includes an outer pipe 401 and an inner pipe 402, the inner pipe 402 is arranged inside the outer pipe 401, and the two ends of the inner pipe 402 are respectively connected to the discharge port 102 and the circulating pump. The liquid inlet end of 3 is connected; a preheating layer 403 is provided between the outer pipe 401 and the inner pipe 402, and the condensed water discharge port 204 is communicated with the preheating layer 403 through the water inlet pipe 206, and the condensed water has a certain temperature, and the After entering the preheating layer 403, the raw material liquid is preheated to speed up the temperature raising speed of the raw material liquid, and at the same time save energy and avoid waste of thermal energy in the condensed water.
本发明将原料液由进料口通入，原料液沿料管流动后从排料口排出，由蒸汽入口向加热管内部通入高温蒸汽，高温蒸汽沿加热管流动，与原料液进行热交换后冷凝成水，并从冷凝水排出口排出，经过高温蒸汽加热后的原料液由进液管流入气液分离器内部，原料液在气液分离器内部进行气液分离，流体在重力作用下从排料管排出，由循环泵抽入，并从循环管通入进料口，对原料液进行多次加热和气液分离，适用于有结垢性、结晶性、高浓度、高粘度并且含不溶性固形物等化工、食品、制药、环保工程、废液蒸发回收等行业的蒸发浓缩。In the present invention, the raw material liquid is introduced from the feeding port, the raw material liquid flows along the material pipe and then is discharged from the discharging port, and the high-temperature steam is introduced into the heating pipe from the steam inlet, and the high-temperature steam flows along the heating pipe to exchange heat with the raw material liquid. After condensing into water, it is discharged from the condensate water outlet. The raw material liquid heated by high temperature steam flows into the gas-liquid separator through the liquid inlet pipe, and the raw material liquid is separated into gas and liquid inside the gas-liquid separator. The fluid is under the action of gravity. It is discharged from the discharge pipe, pumped in by the circulating pump, and passed into the feeding port from the circulating pipe, and the raw material liquid is heated and gas-liquid separated for many times. It is suitable for scaling, crystallinity, high concentration, high viscosity and containing Evaporation and concentration of insoluble solids and other industries such as chemical, food, pharmaceutical, environmental protection engineering, and waste liquid evaporation recovery.
以上的仅是本发明的优选实施方式，应当指出，对于本领域的技术人员来说，在不脱离本发明构思的前提下，还可以作出若干变形和改进，这些也应该视为本发明的保护范围，这些都不会影响本发明实施的效果和专利的实用性。The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present invention, and these should also be regarded as the protection of the present invention. scope, these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (10)

  1. 一种用于火电厂污水处理用强制循环蒸发器，其特征在于，包括气液分离器（1）、管式换热器（2）和循环泵（3）；所述管式换热器（2）的外侧分别开设有蒸汽入口（201）、进料口（202）、排料口（203）和冷凝水排出口（204），所述管式换热器（2）的内部设置有料管（208）和加热管（209），料管（208）分别与进料口（202）、排料口（203）连通，加热管（209）分别与蒸汽入口（201）、冷凝水排出口（204）连通；所述排料口（203）通过进液管（205）与气液分离器（1）内部连通，所述气液分离器（1）的底部开设有下料口（102），下料口（102）连通有排料管（4），所述循环泵（3）的进液端与排料管（4）连通，循环泵（3）的排液端通过循环管（207）与进料口（202）连通。A forced circulation evaporator for sewage treatment in thermal power plants, characterized in that it comprises a gas-liquid separator (1), a tubular heat exchanger (2) and a circulating pump (3); the tubular heat exchanger ( 2) A steam inlet (201), a feeding port (202), a discharging port (203) and a condensing water discharging port (204) are respectively provided on the outside of the tubular heat exchanger (2), and a feeding pipe is arranged inside the tubular heat exchanger (2). (208) and a heating pipe (209), the material pipe (208) is respectively connected with the feeding port (202) and the discharging port (203), and the heating pipe (209) is respectively connected with the steam inlet (201) and the condensed water discharge port ( 204) is connected; the discharge port (203) is communicated with the inside of the gas-liquid separator (1) through the liquid inlet pipe (205), and the bottom of the gas-liquid separator (1) is provided with a discharge port (102), The discharge port (102) is communicated with a discharge pipe (4), the liquid inlet end of the circulation pump (3) is communicated with the discharge pipe (4), and the liquid discharge end of the circulation pump (3) passes through the circulation pipe (207) It communicates with the feed port (202).
  2. 根据权利要求1所述的用于火电厂污水处理用强制循环蒸发器，其特征在于，所述进料口（202）开设于管式换热器（2）的底部，排料口（203）开设于管式换热器（2）的上部。The forced circulation evaporator for thermal power plant sewage treatment according to claim 1, characterized in that the feed port (202) is opened at the bottom of the tubular heat exchanger (2), and the discharge port (203) It is opened at the upper part of the tubular heat exchanger (2).
  3. 根据权利要求2所述的用于火电厂污水处理用强制循环蒸发器，其特征在于，所述气液分离器（1）的顶部开设有二次蒸汽排出口（101）。The forced circulation evaporator for thermal power plant sewage treatment according to claim 2, wherein a secondary steam discharge port (101) is provided on the top of the gas-liquid separator (1).
  4. 根据权利要求1所述的用于火电厂污水处理用强制循环蒸发器，其特征在于，所述气液分离器（1）内部固定安装有过滤网（105），过滤网（105）为V型结构，且过滤网（105）的左右两侧对称滑动安装有两个刮板（106），所述气液分离器（1）内部还安装有驱动刮板（106）沿过滤网（105）向两侧移动的驱动机构。The forced circulation evaporator for thermal power plant sewage treatment according to claim 1, wherein a filter screen (105) is fixedly installed inside the gas-liquid separator (1), and the filter screen (105) is V-shaped two scrapers (106) are installed symmetrically on the left and right sides of the filter screen (105), and a driving scraper (106) is also installed inside the gas-liquid separator (1) along the filter screen (105). Drive mechanism that moves on both sides.
  5. 根据权利要求4所述的用于火电厂污水处理用强制循环蒸发器，其特征在于，所述驱动机构包括转动安装于过滤网（105）底部的调节螺杆（107），调节螺杆（107）的左右两侧对称设置有两种旋向相反的外螺纹，调节螺杆（107）的左右两侧还对称螺纹连接有两个调节螺套（107），调节螺套（107）通过连接杆（109）与刮板（106）连接。The forced circulation evaporator for thermal power plant sewage treatment according to claim 4, characterized in that the drive mechanism comprises an adjusting screw (107) rotatably installed at the bottom of the filter screen (105), and the adjusting screw (107) Two kinds of external threads with opposite rotation directions are symmetrically arranged on the left and right sides. The left and right sides of the adjusting screw (107) are also symmetrically connected with two adjusting screw sleeves (107), and the adjusting screw sleeves (107) pass through the connecting rod (109). Connect with scraper (106).
  6. 根据权利要求5所述的用于火电厂污水处理用强制循环蒸发器，其特征在于，所述连接杆（109）为伸缩杆结构。The forced circulation evaporator for thermal power plant sewage treatment according to claim 5, wherein the connecting rod (109) is a telescopic rod structure.
  7. 根据权利要求6所述的用于火电厂污水处理用强制循环蒸发器，其特征在于，所述气液分离器（1）的内部还固定安装有驱动调节螺杆（107）转动的驱动电机，驱动电机为减速电机。The forced circulation evaporator for thermal power plant sewage treatment according to claim 6, characterized in that, a drive motor for driving the adjusting screw (107) to rotate is also fixedly installed inside the gas-liquid separator (1), which drives the The motor is a geared motor.
  8. 根据权利要求7所述的用于火电厂污水处理用强制循环蒸发器，其特征在于，所述气液分离器（1）的左右两侧对称安装有两个集料盒（103），集料盒（103）通过排渣口（104）与气液分离器（1）的内部连通，排渣口（104）开设于过滤网（105）上部倾斜端。The forced circulation evaporator for thermal power plant sewage treatment according to claim 7, characterized in that two collecting boxes (103) are symmetrically installed on the left and right sides of the gas-liquid separator (1). The box (103) is communicated with the interior of the gas-liquid separator (1) through a slag discharge port (104), and the slag discharge port (104) is opened at the upper inclined end of the filter screen (105).
  9. 根据权利要求1所述的用于火电厂污水处理用强制循环蒸发器，其特征在于，所述加热管（209）为螺纹管结构，加热管（209）绕设于料管（208）的外侧。The forced circulation evaporator for thermal power plant sewage treatment according to claim 1, wherein the heating pipe (209) is a threaded pipe structure, and the heating pipe (209) is wound around the outside of the material pipe (208). .
  10. 根据权利要求1-9任一所述的用于火电厂污水处理用强制循环蒸发器，其特征在于，所述排料管（4）包括外管（401）和内管（402），内管（402）设置于外管（401）内部，且内管（402）的两端分别与下料口（102）、循环泵（3）的进液端连通；所述外管（401）和内管（402）之间设置有预热层（403），所述冷凝水排出口（204）通过进水管（206）与预热层（403）连通。The forced circulation evaporator for thermal power plant sewage treatment according to any one of claims 1-9, wherein the discharge pipe (4) comprises an outer pipe (401) and an inner pipe (402), and the inner pipe (402) is arranged inside the outer pipe (401), and the two ends of the inner pipe (402) are respectively connected with the feeding port (102) and the liquid inlet end of the circulating pump (3); the outer pipe (401) and the inner A preheating layer (403) is arranged between the pipes (402), and the condensed water discharge port (204) is communicated with the preheating layer (403) through a water inlet pipe (206).
PCT/CN2021/101477 2020-12-29 2021-06-22 Forced circulation evaporator for sewage treatment of fossil fuel power plant WO2022142184A1 (en)

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