CN110694287A - Low temperature evaporative crystallizer - Google Patents

Low temperature evaporative crystallizer Download PDF

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CN110694287A
CN110694287A CN201910914880.6A CN201910914880A CN110694287A CN 110694287 A CN110694287 A CN 110694287A CN 201910914880 A CN201910914880 A CN 201910914880A CN 110694287 A CN110694287 A CN 110694287A
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cavity
chamber
crystallization
baffle plate
pipe
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CN110694287B (en
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何�泽
蔡战林
鲁军
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Zhejiang Huansen Environmental Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/0011Heating features
    • B01D1/0041Use of fluids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/0011Heating features
    • B01D1/0029Use of radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D9/00Crystallisation
    • B01D9/0018Evaporation of components of the mixture to be separated
    • B01D9/0031Evaporation of components of the mixture to be separated by heating
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048Purification of waste water by evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/10Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D9/00Crystallisation
    • B01D2009/0086Processes or apparatus therefor

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  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
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  • Environmental & Geological Engineering (AREA)
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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

本发明公开了一种低温蒸发结晶器,包括壳体,其特征在于:壳体内设有第一隔档板和第二隔档板,第一、第二隔档板将壳体内腔分为进水腔室、中间腔室和蒸发腔室,中间腔室内上下排布设有多层结晶腔,每层结晶腔的底板为倾斜设置的结晶板,顶板为倾斜设置的滤布,第一隔档板设有第一透气孔将结晶腔与进水腔室导通,第二隔档板设有第二透气孔和排水孔将结晶腔与蒸发腔室导通,每层结晶腔的滤布上方在进水腔室一侧设有布水管,布水管与进水管相通,中间腔室内安装设有加热部件,蒸发腔室内安装设有水雾化器,蒸发腔室连接吹风管,进水腔室连接吸风管,吹风管连通热风风机。本发明具有结构紧凑、能耗低的优点。

Figure 201910914880

The invention discloses a low-temperature evaporative crystallizer, which comprises a shell, and is characterized in that: a first baffle plate and a second baffle plate are arranged in the shell, and the first and second baffle plates divide the inner cavity of the shell into inlets. The water chamber, the middle chamber and the evaporation chamber are arranged up and down in the middle chamber with multi-layer crystallization chambers. A first ventilation hole is provided to conduct the crystallization chamber and the water inlet chamber, and the second baffle plate is provided with a second ventilation hole and a drainage hole to conduct the crystallization chamber and the evaporation chamber. There is a water distribution pipe on one side of the water inlet chamber, the water distribution pipe is connected with the water inlet pipe, a heating component is installed in the middle chamber, a water atomizer is installed in the evaporation chamber, the evaporation chamber is connected with the blowing pipe, and the water inlet chamber is connected with The suction pipe and the blowing pipe are connected to the hot air blower. The invention has the advantages of compact structure and low energy consumption.

Figure 201910914880

Description

低温蒸发结晶器Low temperature evaporative crystallizer

技术领域technical field

本发明属于蒸发结晶技术领域,具体涉及一种低温蒸发结晶器。The invention belongs to the technical field of evaporative crystallization, in particular to a low-temperature evaporative crystallizer.

背景技术Background technique

蒸发结晶器是利用蒸发部分溶剂使溶液达到过饱和度状态,同时将溶液中的盐(并非单指氯化钠)分析出。其中在污水治理中也有些厂商使用到蒸发结晶器,通过蒸发结晶器将水与水中的盐成分分开来。较为常见的蒸发器原理是使用加热的方式使得水蒸发出去,从而使得水中的盐析出,但是这种方式普遍存在有能耗过高的缺陷。The evaporative crystallizer uses the evaporation of part of the solvent to make the solution reach a state of supersaturation, and at the same time analyzes the salt (not just sodium chloride) in the solution. Among them, some manufacturers also use evaporative crystallizers in sewage treatment, and separate water and salt components in water through evaporative crystallizers. The more common evaporator principle is to use the heating method to evaporate the water, so that the salt in the water is precipitated, but this method generally has the defect of excessive energy consumption.

发明内容SUMMARY OF THE INVENTION

鉴于背景技术存在的不足,本发明的目的旨在于提供一种具有结构紧凑、能耗低的优点的低温蒸发结晶器。In view of the deficiencies in the background technology, the purpose of the present invention is to provide a low-temperature evaporative crystallizer with the advantages of compact structure and low energy consumption.

本发明是通过如下技术方案来实施的:The present invention is implemented through the following technical solutions:

低温蒸发结晶器,包括壳体,其特征在于:壳体内设有第一隔档板和第二隔档板,第一、第二隔档板将壳体内腔分为进水腔室、中间腔室和蒸发腔室,中间腔室内上下排布设有多层结晶腔,每层结晶腔的底板为倾斜设置的结晶板,顶板为倾斜设置的滤布,第一隔档板设有第一透气孔将结晶腔与进水腔室导通,第二隔档板设有第二透气孔和排水孔将结晶腔与蒸发腔室导通,每层结晶腔的滤布上方在进水腔室一侧设有布水管,布水管与进水管相通,中间腔室内安装设有加热部件,蒸发腔室内安装设有水雾化器,蒸发腔室连接吹风管,进水腔室连接吸风管。吹风管连通热风风机。The low-temperature evaporative crystallizer includes a shell, and is characterized in that: the shell is provided with a first baffle plate and a second baffle plate, and the first and second baffle plates divide the inner cavity of the shell into a water inlet chamber and an intermediate cavity. chamber and evaporation chamber, the middle chamber is arranged with multi-layer crystallization chambers up and down, the bottom plate of each layer of crystallization chamber is an inclined crystal plate, the top plate is an inclined filter cloth, and the first baffle plate is provided with a first ventilation hole The crystallization chamber and the water inlet chamber are connected, the second baffle plate is provided with second ventilation holes and drainage holes to conduct the crystallization chamber and the evaporation chamber, and the filter cloth of each layer of the crystallization chamber is on the side of the water inlet chamber A water distribution pipe is provided, the water distribution pipe communicates with the water inlet pipe, a heating component is installed in the middle chamber, a water atomizer is installed in the evaporation chamber, the evaporation chamber is connected with a blowing pipe, and the water inlet chamber is connected with a suction pipe. The blowing duct is connected to the hot air blower.

上述技术方案的低温蒸发结晶器,结构紧凑、能耗低,在对污水进行处理的时候,首先通过泵的作用将污水通过进水管泵入到布水管中,布水管将污水分成若干小细流下到滤布上,滤布倾斜设置,于是在液体的重力以及滤布的导向作用下,液体下到滤布的低端,并沿着第二隔档板流到结晶板上,由于结晶腔室被加热部件所加热具有较高温度(加热温度一般在50-100度之间,根据不同污水性质而定),所以污水小细流在滤布上流动时,趋向无限摊薄的液体的一部分水分会直接蒸发并通过第一透气孔被吸风管吸走,液体被浓缩;接下来,流到结晶板上的浓缩液体通过排水孔进入到蒸发腔室,在蒸发腔室内,水雾化器会将液体雾化,使得液体形成粒径很小的液滴,并在热吹风(热吹风的温度小于中间腔室的加热温度)的作用下液滴快速形成气体,盐也从水中析出,同时吹风管吹风、吸风管抽风使得进水腔室、中间腔室以及蒸发腔室之间形成负压效应,使蒸发腔室中的气体依次通过第二透气孔、结晶腔和第一透气孔后进入到进水腔室,并通过吸风管排出;在气体经过结晶腔室时,气体会接触结晶板,倾斜设置的结晶板加大了结晶接触面积,由于结晶板的温度较高,因此可以使得水分蒸发出去被吸风管吸走,而盐成分则在结晶板上析出(需定期对结晶板进行清理)。上述过程中,当污水小细流在通过滤布的时候,滤布还可以将污水中的油渍吸附出来,使得雾化后的污水与热吹风接触时快速变成气体。The low-temperature evaporative crystallizer of the above technical solution has a compact structure and low energy consumption. When treating sewage, the sewage is first pumped into the water distribution pipe through the water inlet pipe by the action of the pump, and the water distribution pipe divides the sewage into several small trickles to flow down. On the filter cloth, the filter cloth is inclined, so under the gravity of the liquid and the guidance of the filter cloth, the liquid descends to the lower end of the filter cloth and flows to the crystallization plate along the second baffle plate. The heated part has a relatively high temperature (the heating temperature is generally between 50-100 degrees, depending on the nature of different sewage), so when the small stream of sewage flows on the filter cloth, part of the water that tends to be infinitely diluted will be released. It evaporates directly and is sucked away by the suction pipe through the first ventilation hole, and the liquid is concentrated; next, the concentrated liquid flowing to the crystallization plate enters the evaporation chamber through the drainage hole, and in the evaporation chamber, the water atomizer will The liquid is atomized, so that the liquid forms droplets with a small particle size, and the droplets rapidly form gas under the action of hot air blowing (the temperature of the hot air blowing is lower than the heating temperature of the intermediate chamber), and the salt is also precipitated from the water. The air blowing and the air suction pipe make a negative pressure effect between the water inlet chamber, the middle chamber and the evaporation chamber, so that the gas in the evaporation chamber passes through the second ventilation hole, the crystallization cavity and the first ventilation hole in turn and then enters into the air. The water enters the chamber and is discharged through the suction pipe; when the gas passes through the crystallization chamber, the gas will contact the crystallizing plate, and the inclined crystallizing plate increases the crystal contact area. Evaporate out and be sucked away by the suction pipe, while the salt component is precipitated on the crystallizing plate (the crystallizing plate needs to be cleaned regularly). In the above process, when the small stream of sewage passes through the filter cloth, the filter cloth can also absorb the oil stains in the sewage, so that the atomized sewage quickly turns into a gas when it contacts with the hot air blower.

作为优选,所述布水管沿滤布的设置方向整排布设。上述设计可保证污水形成整排的小细流下到滤布上。Preferably, the water distribution pipes are arranged in a row along the setting direction of the filter cloth. The above design can ensure that the sewage forms a whole row of small fines and flows down to the filter cloth.

作为优选,所述结晶板与滤布具有相同的倾斜方向。Preferably, the crystal plate and the filter cloth have the same inclination direction.

作为优选,所述壳体、第一隔档板、第二隔档板和结晶板采用306或316牌号的不锈钢板。Preferably, the shell, the first baffle plate, the second baffle plate and the crystallizing plate are stainless steel plates of 306 or 316 grades.

所述滤布采用维纶材料。The filter cloth is made of vinylon material.

所述蒸发腔室的底部设有回流管,回流管与进水管相接,回流管的管道上安装回流泵。上述设计可将蒸发腔室内多余的残留液体通过回流管再次回流到进水管中进行循环蒸发,从而使得蒸发腔室中能够持续正常的工作。The bottom of the evaporation chamber is provided with a return pipe, the return pipe is connected with the water inlet pipe, and a return pump is installed on the pipe of the return pipe. The above design can return the excess residual liquid in the evaporation chamber to the water inlet pipe through the return pipe for circulating evaporation, so that the evaporation chamber can continue to work normally.

附图说明Description of drawings

本发明有以下附图:The present invention has the following accompanying drawings:

图1是本发明的外形结构图;Fig. 1 is the outline structure diagram of the present invention;

图2是本发明的内部结构图。FIG. 2 is an internal structure diagram of the present invention.

具体实施方式Detailed ways

如图所示,本发明的低温蒸发结晶器,包括壳体1,壳体1内设有第一隔档板2和第二隔档板3,第一、第二隔档板将壳体内腔分为进水腔室4、中间腔室5和蒸发腔室6,中间腔室5内上下排布设有多层结晶腔7,每层结晶腔7的底板为倾斜设置的结晶板71,顶板为倾斜设置的滤布72,结晶板71与滤布72具有相同的倾斜方向,所述壳体1、第一隔档板2、第二隔档板3和结晶板71采用306或316牌号的不锈钢板,所述滤布72采用维纶材料,品号295-101,每平方米克重450g,第一隔档板2设有第一透气孔18将结晶腔5与进水腔室4导通,第二隔档板3设有第二透气孔10和排水孔9将结晶腔5与蒸发腔室6导通,排水孔9位于第二透气孔10下方,每层结晶腔7的滤布72上方在进水腔室4一侧设有布水管13,布水管13沿滤布72的设置方向前后整排布设,布水管13与进水管16相通,进水管16由水泵17进行污水供水,中间腔室5内安装设有电加热部件19,电加热部件19的工作温度在50-100度之间,蒸发腔室6的底部安装设有超声波水雾化器8,蒸发腔室6连通吹风管11,吹风管11连通热风风机12,吹风管11的出口穿入到蒸发腔室6的内部对准超声波水雾化器8的雾化水出口,进水腔室4连接吸风管15,吸风管15与抽风风机连通,所述蒸发腔室6的底部设有回流管14,回流管14与进水管16相接,回流管14的管道上安装回流泵20。As shown in the figure, the low-temperature evaporative crystallizer of the present invention includes a casing 1, and a first baffle 2 and a second baffle 3 are arranged in the casing 1. The first and second baffles separate the inner cavity of the casing. It is divided into a water inlet chamber 4, a middle chamber 5 and an evaporation chamber 6. The middle chamber 5 is arranged with multi-layer crystallization chambers 7 up and down. The bottom plate of each layer of crystallization chamber 7 is an inclined crystal plate 71, and the top plate is The filter cloth 72 of the inclined setting, the crystallization plate 71 and the filter cloth 72 have the same inclination direction, the shell 1, the first baffle plate 2, the second baffle plate 3 and the crystal plate 71 are made of stainless steel of 306 or 316 grades The filter cloth 72 is made of vinylon material, the product number is 295-101, and the gram weight per square meter is 450g. The second baffle plate 3 is provided with a second ventilation hole 10 and a drainage hole 9 to conduct the crystallization chamber 5 with the evaporation chamber 6 . The drainage hole 9 is located below the second ventilation hole 10 and above the filter cloth 72 of each layer of the crystallization chamber 7 A water distribution pipe 13 is provided on one side of the water inlet chamber 4. The water distribution pipes 13 are arranged in a row along the setting direction of the filter cloth 72. The water distribution pipe 13 communicates with the water inlet pipe 16. The water inlet pipe 16 is supplied with sewage by the pump 17. An electric heating element 19 is installed in the chamber 5, and the working temperature of the electric heating element 19 is between 50-100 degrees. An ultrasonic water atomizer 8 is installed at the bottom of the evaporation chamber 6, and the evaporation chamber 6 is connected to the blowing pipe 11. , the blowing pipe 11 is connected to the hot air blower 12, the outlet of the blowing pipe 11 penetrates into the inside of the evaporation chamber 6 and is aligned with the atomized water outlet of the ultrasonic water atomizer 8, the water inlet chamber 4 is connected to the suction pipe 15, and the suction The pipe 15 is communicated with the exhaust fan, the bottom of the evaporation chamber 6 is provided with a return pipe 14 , the return pipe 14 is connected with the water inlet pipe 16 , and a return pump 20 is installed on the pipe of the return pipe 14 .

上述的低温蒸发结晶器,在对污水进行处理的时候,首先通过水泵的作用将污水通过进水管泵入到布水管中,布水管将污水分成若干小细流下到滤布上,在液体的重力以及滤布的导向作用下,液体趋向摊薄并下到滤布的低端,并沿着第二隔档板流到结晶板上,然后通过排水孔进入到蒸发腔室,在蒸发腔室内,水雾化器会将液体雾化,并在热吹风的作用下使水分快速变成气体,盐也从水中析出,同时吹风管吹风、吸风管抽风使得进水腔室、中间腔室以及蒸发腔室之间形成负压效应,使蒸发腔室中的气体依次通过第二透气孔、结晶腔室和第一透气孔后进入到进水腔室,并通过吸风管排出;在气体经过结晶腔室时,气体会接触结晶板,由于结晶腔室被加热,结晶板的温度较高,因此可以使得水分蒸发出去被吸风管吸走,而盐成分则在结晶板上析出,同时回流泵通过回流管将残留在蒸发腔室内的液体再次回流到进水管中进行循环蒸发。The above-mentioned low-temperature evaporative crystallizer, when treating sewage, firstly uses the action of the water pump to pump the sewage into the water distribution pipe through the water inlet pipe, and the water distribution pipe divides the sewage into several small fines and flows down to the filter cloth, under the gravity of the liquid. And under the guidance of the filter cloth, the liquid tends to be thinned and descend to the lower end of the filter cloth, and flow to the crystallization plate along the second baffle plate, and then enter the evaporation chamber through the drainage hole, where the water The atomizer will atomize the liquid, and under the action of hot air blowing, the moisture will be quickly turned into gas, and the salt will also be precipitated from the water. A negative pressure effect is formed between the chambers, so that the gas in the evaporation chamber enters the water inlet chamber through the second ventilation hole, the crystallization chamber and the first ventilation hole in turn, and is discharged through the suction pipe; after the gas passes through the crystallization chamber When the crystallization chamber is heated, the temperature of the crystallization plate is high, so the water can be evaporated and sucked away by the suction pipe, while the salt component is precipitated on the crystallization plate, and the return pump passes through The return pipe returns the liquid remaining in the evaporation chamber back to the water inlet pipe for circulating evaporation.

Claims (7)

1. Low temperature evaporation crystallizer, including the casing, its characterized in that: the shell is internally provided with a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate divide an inner cavity of the shell into a water inlet cavity, a middle cavity and an evaporation cavity, a plurality of layers of crystallization cavities are vertically arranged in the middle cavity, a bottom plate of each layer of crystallization cavity is a crystallization plate which is obliquely arranged, a top plate is filter cloth which is obliquely arranged, the first baffle plate is provided with a first air hole to communicate the crystallization cavity with the water inlet cavity, the second baffle plate is provided with a second air hole and a water drain hole to communicate the crystallization cavity with the evaporation cavity, a water distribution pipe is arranged on one side of the water inlet cavity above the filter cloth of each layer of crystallization cavity, the water distribution pipe is communicated with a water inlet pipe, a heating part is arranged in the middle cavity, a water atomizer is arranged in the evaporation cavity, the evaporation cavity is connected with a blowing pipe.
2. The low temperature evaporative crystallizer of claim 1: the method is characterized in that: the blowpipe is communicated with a hot air fan.
3. The cryogenic evaporative crystallizer of claim 1, wherein: the water distribution pipes are arranged in rows along the arrangement direction of the filter cloth.
4. The cryogenic evaporative crystallizer of claim 1, wherein: the crystallizing plate and the filter cloth have the same inclined direction.
5. The cryogenic evaporative crystallizer of claim 1, wherein: the shell, the first baffle plate, the second baffle plate and the crystallization plate are made of 306 or 316-grade stainless steel plates.
6. The cryogenic evaporative crystallizer of claim 1, wherein: the filter cloth is made of vinylon materials.
7. The cryogenic evaporative crystallizer of claim 1, wherein: the bottom of the evaporation chamber is provided with a return pipe, the return pipe is connected with a water inlet pipe, and a return pump is arranged on a pipeline of the return pipe.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111359237A (en) * 2020-03-31 2020-07-03 刘杨 Steam flow generator is stabilized in chemistry experiment
CN111389037A (en) * 2020-03-31 2020-07-10 刘杨 Stable chemical vapor flow generating device
CN114733225A (en) * 2022-03-09 2022-07-12 福建省南仹生物科技有限公司 Hyodeoxycholic acid draws and uses crystallizer

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