CN110482628A - Utilize the direct contact evaporation process device and method thereof of steam exhaust heat - Google Patents
Utilize the direct contact evaporation process device and method thereof of steam exhaust heat Download PDFInfo
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- CN110482628A CN110482628A CN201910910757.7A CN201910910757A CN110482628A CN 110482628 A CN110482628 A CN 110482628A CN 201910910757 A CN201910910757 A CN 201910910757A CN 110482628 A CN110482628 A CN 110482628A
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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
- C02F1/042—Prevention of deposits
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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
- C02F1/043—Details
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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
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The present invention proposes a kind of direct contact evaporation process device and method thereof using steam exhaust heat, which includes: the first evaporator；Second evaporator, the second evaporator and the first evaporator are connected；Air heat exchanger, air heat exchanger are provided with the first air inlet, the first air exhaust port, steam exhaust air inlet, steam exhaust exhaust outlet, and the first air exhaust port is connect with the first air inlet；And air preheater, air preheater is provided with the second air inlet, the second air exhaust port, tail gas air inlet, tail gas exhaust outlet, second air exhaust port is connect with the first air inlet, and tail gas air inlet is connect with second exhaust port, and tail gas exhaust outlet is connect with chimney.The steam exhaust that garbage disposal site and/or steam power plant are difficult to be utilized is used the present invention, for the processing of percolate, under conditions of same treatment amount, reduces the consumption of fuel gas, reduces the cost of percolate processing.
Description
Technical field
The present invention relates to the organic liquid waste processing technology fields with high salt of environmental protection, in particular to a kind of to utilize steam exhaust heat
Direct contact evaporation process device and method thereof.
Background technique
Higher and higher by burning the ratio handled when garbage disposal, burning has become the very important rubbish in China
Rubbish processing means.Since China's house refuse moisture content is relatively high, cause the leachate generation of incineration plant bigger, in addition
The environmentally friendly situation of incineration plant is quite paid close attention to by the common people, and the processing of landfill leachate inevitably becomes the weight of garbage burning factory management
Want one of project.
Contain a large amount of degradable and hardly degraded organic substances, ammonia nitrogen and inorganic salts etc., biological treatment in landfill leachate
It is current most important processing technique means, most easily biodegradable organics can be removed, and can be nitre by mineralized nitrogen
State nitrogen (can be removed further) in supplementary carbon source, but remaining hardly degraded organic substance and other pollutants can only generally pass through
Nanofiltration or the embrane methods such as reverse osmosis removal；But film process is only a Physical entrapment process, and the film concentrate of generation is enriched largely
Hardly degraded organic substance and salinity.Advanced oxidation processes can decompose and remove hardly degraded organic substance, but be difficult to remove nitrogen-containing pollutant,
And the problems such as solving technology stability and higher processing cost is also needed in practical applications.Based on direct contact heat transfer principle
Submerged combustion evaporation technology has thoroughly evaded fouling problem, has been widely used for landfill leachate, especially film concentrate
Handle engineering.
Chinese patent CN1278963C discloses a kind of evaporation burning of landfill percolate and is concentrated by evaporation at the two-stage
Reason method.The prior art also discloses submerged combustion evaporation method, achieves preferable treatment effect in practical applications.Submergence
Evaporation technology energy consumption of burning is higher, does not have enough biogas can use in garbage burning factory, although natural gas can also be used,
But usually require to set up pipe special or setting gas bag, it builds higher with operating cost.
Summary of the invention
To solve the problems, such as or alleviating at least one in above-mentioned technical problem, the present invention proposes a kind of using steam exhaust heat
Directly contact evaporation process device and method thereof.
First aspect present invention proposes a kind of direct contact evaporation process equipment using steam exhaust heat, comprising:
First evaporator, first evaporator are provided with first charging aperture, the first air inlet, first discharge port and first
Exhaust outlet；
Second evaporator, second evaporator are provided with second charging aperture, the second air inlet, the second discharge gate and second
Exhaust outlet, the second charging aperture connect the first discharge port, for receiving liquid to be processed in institute from first evaporator
State the primary concentration liquid for evaporating and being formed in the first evaporator, second air inlet connects the first row port, for from
First evaporator receives liquid to be processed and evaporates the level-one boil-off gas to be formed；
Air heat exchanger, the air heat exchanger are provided with the first air inlet, the first air exhaust port, steam exhaust air inlet
Mouth, steam exhaust exhaust outlet, first air exhaust port are connect with first air inlet, for supplying to first evaporator
High temperature air after absorbing heat in the air heat exchanger；And
Air preheater, the air preheater are provided with the second air inlet, the second air exhaust port, tail gas air inlet
Mouth, tail gas exhaust outlet, second air exhaust port are connect with first air inlet, are used for the air heat exchanger
The air after absorbing heat in the air preheater is supplied, the tail gas air inlet is connect with the second exhaust port, the tail
Gas exhaust outlet is connect with chimney.
Preferably, the ullage of second evaporator is provided with combustion space, and the level-one boil-off gas is passed through institute
Combustion space is stated, the level-one boil-off gas includes air, combustion-supporting gas of the air as burning, second evaporator
It is provided with the pipeline being communicated to inside second evaporator, the pipeline leads to the combustion space, for conveying combustible gas
Body enables the fuel gas to burn in the combustion space, the high-temperature flue gas for formation of burning is logical to the combustion space
To under the liquid level of second evaporator.
Preferably, the direct contact evaporation process equipment using steam exhaust heat is used for garbage disposal site and/or thermoelectricity
Factory, garbage disposal site and/or steam power plant generate steam exhaust, and the steam exhaust is passed through the steam exhaust air inlet.
Preferably, first evaporator and second evaporator are respectively arranged with distribution device, first evaporation
The distribution device of tank is connected with the first air inlet, and the distribution device of second evaporator is connected to the combustion
Space is burnt, the distribution device can tear gas at micro-bubble.
Second aspect of the present invention proposes a kind of direct contact evaporation process method using steam exhaust heat, described to utilize steam exhaust
The direct contact evaporation process method of heat uses directly connecing using steam exhaust heat described in any one of above-mentioned technical proposal
Steaming sends out processing equipment.
Preferably, the direct contact evaporation process method using steam exhaust heat uses any one of any one of claims 1 to 44
The direct contact evaporation process equipment using steam exhaust heat.
Preferably, pass sequentially through the air preheater and the air heat exchanger heating air by described first into
Port is passed through in first evaporator, and liquid to be processed is passed through in first evaporator by the first charging aperture, described
Liquid to be processed evaporates in first evaporator and carries out primary concentration, and the level-one boil-off gas that the primary concentration generates is logical
Enter the combustion space of second evaporator, the primary concentration liquid that the primary concentration generates passes through the first discharge port
Discharge, and be passed through in second evaporator by the second charging aperture, fuel gas is passed through the burning by pipeline
Space is passed through second evaporator after the combustion-supporting lower burning of fuel gas air included by the level-one boil-off gas
Liquid in so that the primary concentration liquid evaporates in second evaporator and carries out secondary concentration, the secondary concentration
The dual evaporation gas of generation is directly entered ambient atmosphere or is back to air preheater and condensed, to the air that will be exchanged heat
It is preheated, second evaporator is discharged by second discharge gate in the secondary concentration liquid that the secondary concentration generates.
Preferably, the gas that the combustion space burning generates is passed through in the primary concentration liquid of second evaporator
To make the primary concentration liquid secondary concentration.
Can obtain through the above technical solution it is following the utility model has the advantages that
1. the steam exhaust that garbage disposal site and/or steam power plant is difficult to be utilized in the present invention is used, the place for percolate
Reason reduces the consumption of fuel gas under conditions of same treatment amount, reduces the cost of percolate processing.
2. the present invention, as the heat of Absorption of Medium steam exhaust and for the direct-contact evaporation of percolate, is avoided using air
The scale problems occurred during indirect heat transfer, and due to using air as heat transfer, it can make full use of steam exhaust
Entrained a large amount of latent heat, it may be difficult to which the steam exhaust heat of conversion efficiently utilizes.
3. the present invention uses double flash evaporation, the first order utilizes exhaust steam residual heat, and the second level utilizes gas fuel burning release
Effective control to pollutant may be implemented in heat, the two combination.
4. the present invention preheats air using the tail gas that evaporation generates, energy loss is reduced.
Detailed description of the invention
Fig. 1 is a kind of knot of direct contact evaporation process equipment using steam exhaust heat of embodiment according to the present invention
Structure schematic diagram.
Description of symbols
1 first evaporator, 11 12 first air inlet of first charging aperture, 13 first discharge port, 14 first row port
The combustion of 2 second evaporator, 21 second charging aperture, 22 second 23 second discharge gate of air inlet, 24 second exhaust port 25
Burn space
3 air heat exchanger, 31 first 32 first air exhaust port of air inlet, 33 steam exhaust air inlet, 34 steam exhaust exhaust
Mouthful
The exhaust of 4 air preheater, 41 second 42 second air exhaust port of air inlet, 43 tail gas air inlet, 44 tail gas
Mouthful.
Specific embodiment
In order to clearly illustrate the above objects, features and advantages of the present invention, the part in conjunction with attached drawing specifically
Bright a specific embodiment of the invention.Other than each embodiment described in this part, the present invention can also pass through it
His different mode is implemented, without departing from the spirit of the invention, those skilled in the art can be correspondingly improved,
Deformation and replacement, therefore the present invention is not limited by specific embodiment disclosed in the part.Protection scope of the present invention Ying Yiquan
Subject to benefit requires.
As shown in Figure 1, the present invention proposes a kind of direct contact evaporation process equipment using steam exhaust heat comprising first
Evaporator 1, the second evaporator 2, air heat exchanger 3 and air preheater 4.
Air heat exchanger 3 is provided with the first air inlet 31, the first air exhaust port 32, steam exhaust air inlet 33, steam exhaust
Exhaust outlet 34.First air inlet 31 is communicated with the first air exhaust port 32, steam exhaust air inlet 33 and 34 phase of steam exhaust exhaust outlet
It is logical.First air exhaust port 32 of air heat exchanger 3 is connect with the first air inlet 12 of the first evaporator 1.
Of the invention can be used for garbage disposal site and/or thermoelectricity using the direct contact evaporation process equipment of steam exhaust heat
Factory, garbage disposal site and/or steam power plant can generate steam exhaust in operation process, and the steam exhaust is in garbage disposal site and/or steam power plant
In can not be utilized, can only discharge after processing.
Air preheater 4 is provided with the second air inlet 41, the second air exhaust port 42, tail gas air inlet 43, tail gas
Exhaust outlet 44.Second air inlet 41 is communicated with the second air exhaust port 42, tail gas air inlet 43 and 44 phase of tail gas exhaust outlet
It is logical.Second air exhaust port 42 of air preheater 4 is connect with the first air inlet 31 of air heat exchanger 3.Second evaporation
The tail gas that tank 3 is discharged is passed through tail gas air inlet 43, and the air of room temperature is passed through the second air inlet 41, air preheater in atmosphere
4 preheat air using the heat of the second evaporator 3 discharge tail gas, avoid thermal loss.Tail gas exhaust outlet 44 and cigarette
Chimney connection, the tail gas that temperature reduces can be discharged into atmosphere.
It is passed through the first air inlet 31 by the air that air preheater 4 preheats, steam exhaust is passed through steam exhaust air inlet 33, leads to
Entering steam exhaust and air in air heat exchanger 3 will do it heat exchange, so as to which high temperature is discharged from the first air exhaust port 32
Condensate liquid is discharged from steam exhaust exhaust outlet 34 in air.
First evaporator 1 is provided with first charging aperture 11, first charging aperture 11 can be located at the first evaporator 1 side wall or
At top, first charging aperture 11 is for conveying percolate to be processed into the first evaporator 1.First evaporator 1 is provided with
One air inlet 12.The bottom of first evaporator 1 is provided with first discharge port 13, and the top or top of the first evaporator 1 are provided with
First row port 14.
Further, the first distribution device (not shown) can be set in the inside of the first evaporator 1, and the first distribution device connects
The first air inlet 12 is connect, the first distribution device can tear the high temperature air being passed through from the first air inlet 12 into micro-bubble,
To make high temperature air come into full contact with percolate, to improve heat transfer efficiency.First distribution device is located under the first evaporator 1
Portion allows percolate to submerge the first distribution device.
The tank bottom of first evaporator 1 is preferably formed into the incline structures such as taper, tubaeform or slope shape, makes the diafiltration of concentration
Liquid can be discharged from the first discharge port 13 of 1 bottom of the first evaporator under the effect of gravity.First row port 14 may be coupled to
Second evaporator 2, in particular, the combustion space 25 of the second evaporator 2 of connection, generates evaporation in the first evaporator 1 for example
The gases such as volatile organic matter and vapor are passed through combustion space 25 and carry out burning disposal.
Second evaporator 2 is provided with second charging aperture 21, second charging aperture 21 can be located at the second evaporator 2 side wall or
At top, second charging aperture 21 is for conveying the percolate for the concentration being discharged from first discharge port 13 into the second evaporator 2.
Second evaporator 2 is provided with the second air inlet 22, and the second air inlet 22 can be located at the side wall of the second evaporator 2
Place.The top of second evaporator 2 is provided with combustion space 25, and the second air inlet 22 can lead to combustion space 25, and first is steamed
It burns the combustion space 25 that gas the second evaporator 2 of importing of generation is evaporated in hair tank 1.
The tank bottom of second evaporator 2 is preferably formed into the incline structures such as taper, tubaeform or slope shape, makes the diafiltration of concentration
Liquid can be discharged from the second discharge gate 23 of 2 bottom of the second evaporator under the effect of gravity.Second exhaust port 24 can connect sky
Air preheater 4 is directly communicated to ambient atmosphere, makes vapor Collection utilization or discharge that generation is evaporated in the second evaporator 2.
Second evaporator 2 is provided with the pipeline being communicated to inside the second evaporator 2, which is used for the second evaporator 2
Transporting combustible gases, it is preferable that the pipeline leads to combustion space 25.Fuel gas is passed through combustion space 25 by pipeline, is made flammable
Gas burns in combustion space 25, and the ignition temperature of combustion space 25 can be 850 DEG C to 1100 DEG C.Fuel gas can be to fill out
Gas, preferably one of biogas, rubbish landfill gas or refuse pyrolysis gas or a variety of are buried, the useless of garbage disposal site is utilized
Object achievees the effect that " treatment of wastes with processes of wastes against one another ".
Further, the inside of the second evaporator 2 can be set the second distribution device (not shown), fuel gas and combustion-supporting
Gas burn in combustion space 25 generation high-temperature gas input the second distribution device can be torn into micro-bubble, thus
It is come into full contact with percolate, to improve heat transfer efficiency.Second distribution device is located at the lower part of the second evaporator 2, makes percolate can
To submerge the second distribution device.
Second exhaust port 24 can connect air preheater 4 or be directly communicated to ambient atmosphere, make to steam in the second evaporator 2
The vapor that hair generates is collected or discharge.
The course of work of the direct contact evaporation process equipment using steam exhaust heat is described below.
The steam exhaust and air progress heat exchange for being generated garbage disposal site and/or steam power plant by air heat exchanger 3, form
High temperature air.Specifically, steam exhaust is passed through steam exhaust air inlet 33, and the air of room temperature is passed through the first air inlet 31 in atmosphere, leads to
It crosses air heat exchanger 3 to exchange by heat, condensate liquid is discharged by steam exhaust exhaust outlet 34 after steam exhaust cooling, air leads to after being heated
Cross the first air exhaust port 32 discharge high temperature air.After the exchange of the heat of air heat exchanger 3, by the first air exhaust port 32
The temperature of the high temperature air of discharge is not less than such as 200 DEG C.The high temperature air of first air exhaust port 32 discharge is passed through the first steaming
It sends out in tank 1.
It is appreciated that the heat using steam exhaust heats air, submerged combustion evaporation in the prior art is eliminated
The reduction of the burner of Shi Suoyong, burner not only reduces the cost of construction investment, and reduces brought by burner
Security risk keeps operational management simpler.Since the submerged combustion evaporation of the prior art uses burner, heat input is by can
The combustion gas scale of construction determines, it is therefore desirable to have the real-time inspection and control system to combustion process real-time control.Due in the present invention
Combustion process carries out in incinerator, far from the risk that evaporator does not explode, therefore simplifies the control flow in evaporation, In
It is convenient for management in actual motion.
In the prior art when the landfill gas source as fuel gas is restricted, need to be replaced by merchantable fuel(s)
In generation, causes operating cost high and consumes mass energy.And the present invention utilizes the heat of steam exhaust, and steam exhaust is used, and reduces
The use of fuel gas reduces the cost of percolate processing.
Percolate is passed through in the first evaporator 1 by pipeline from first charging aperture 11, the discharge of the first air exhaust port 32
High temperature air leads to the first evaporator 1.Percolate is contacted with the high temperature micro-bubble that the first distribution device exports, and makes percolate one
Grade is concentrated, and the volatile contaminant volatilization in percolate generates level-one boil-off gas.The cycles of concentration of primary concentration can for 1 to
2 times.Cycles of concentration refers to the ratio of diafiltration liquid measure to be evaporated and remaining concentration liquid measure.It is appreciated that can be evaporated by control
Time of concentration process and evaporation intensity control cycles of concentration, and the time of concentration process is longer, evaporation intensity is bigger, concentration times
Number is bigger.Level-one boil-off gas mainly includes the small molecules such as air, volatile organic matter, water vapour, carbon dioxide and nitrogen
Substance.Level-one boil-off gas is discharged from first row port 14 and is passed through the burning sky of the second evaporator 2 by the second air inlet 22
Between 25, for the air in level-one boil-off gas as combustion-supporting gas, the temperature of the level-one boil-off gas of discharge is lower than 100 DEG C, such as
About 90 DEG C.
It is logical by first discharge port 13 and second charging aperture 21 after percolate completes primary concentration in the first evaporator 1
Enter the second evaporator 2, the primary concentration percolate temperature flowed out by first discharge port 13 can be such as 85 DEG C to 95 DEG C.
Fuel gas and combustion-supporting gas are passed through combustion space 25, and fuel gas is made to burn in combustion space 25, and burning generates
High-temperature gas micro-bubble is torn by the second distribution device.What primary concentration percolate and the second distribution device exported
The contact of high temperature micro-bubble, makes primary concentration percolate carry out secondary concentration, and the volatilization of primary concentration percolate generates dual evaporation
Gas.The cycles of concentration of secondary concentration is adjustable, such as 5 times to 6 times, enables dual evaporation gas qualified discharge.Level-one
Large quantity of moisture evaporation in concentrated leachate generates dual evaporation gas, and dual evaporation gas mainly includes water vapour.Second level is steamed
Body of getting angry can be directly discharged in ambient atmosphere or be condensed from the discharge of second exhaust port 24, the dual evaporation gas of discharge
About 100 DEG C of the temperature of body.
Primary concentration percolate is completed second in the second evaporator 2 after being concentrated by evaporation, and 23 row of the second discharge gate is passed through
Second evaporator 2 out.
It is appreciated that the treating capacity of primary concentration, that is, utilize the direct contact evaporation process equipment of steam exhaust heat
Treating capacity can be adjusted according to the temperature and tolerance of the steam exhaust of input.
Second of the tail gas for being concentrated by evaporation generation leads to air preheater by second exhaust port 24 in the second evaporator 2
4, air is preheated using air preheater 4, makes full use of the heat of emission to be promoted and initially be passed through air heat-exchange
The temperature of the air of device 3.Due to the specific heat capacity very little of air, thus a large amount of high temperature air is needed in evaporation process.Room temperature
Under air themperature be about 10 DEG C to 30 DEG C, the temperature of final emission is about 100 DEG C, air own temperature raising may lead
Cause heat waste.The air themperature for being passed through air heat exchanger 3 is promoted using the heat of tail gas, and the air after preheating is passed through sky
Gas heat exchanger 3 is heated by steam exhaust, compared to directly by the air of room temperature be passed through air heat exchanger 3 heating is carried out by steam exhaust can be into
One step energy saving.
Claims (7)
1. a kind of direct contact evaporation process equipment using steam exhaust heat characterized by comprising
First evaporator, first evaporator are provided with first charging aperture, the first air inlet, first discharge port and first exhaust
Mouthful；
Second evaporator, second evaporator are provided with second charging aperture, the second air inlet, the second discharge gate and second exhaust
Mouthful, the second charging aperture connects the first discharge port, for receiving liquid to be processed described the from first evaporator
The primary concentration liquid for evaporating and being formed in one evaporator, second air inlet connect the first row port, are used for from described
First evaporator receives liquid to be processed and evaporates the level-one boil-off gas to be formed；
Air heat exchanger, the air heat exchanger be provided with the first air inlet, the first air exhaust port, steam exhaust air inlet,
Steam exhaust exhaust outlet, first air exhaust port are connect with first air inlet, for existing to first evaporator supply
High temperature air after absorbing heat in the air heat exchanger；And
Air preheater, the air preheater be provided with the second air inlet, the second air exhaust port, tail gas air inlet,
Tail gas exhaust outlet, second air exhaust port are connect with first air inlet, for supplying to the air heat exchanger
To the air after absorbing heat in the air preheater, the tail gas air inlet is connect with the second exhaust port, the tail gas
Exhaust outlet is connect with chimney.
2. the direct contact evaporation process equipment according to claim 1 using steam exhaust heat, which is characterized in that described
The ullage of two evaporators is provided with combustion space, and the level-one boil-off gas is passed through the combustion space, and the level-one is steamed
Body of getting angry includes air, and combustion-supporting gas of the air as burning, second evaporator, which is provided with, is communicated to described second
Pipeline inside evaporator, the pipeline lead to the combustion space, for transporting combustible gases to the combustion space, make institute
Stating fuel gas can burn in the combustion space, and the high-temperature flue gas for formation of burning leads to the liquid level of second evaporator
Under.
3. the direct contact evaporation process equipment according to claim 1 using steam exhaust heat, which is characterized in that the benefit
Garbage disposal site and/or steam power plant, garbage disposal site and/or thermoelectricity are used for the direct contact evaporation process equipment of steam exhaust heat
Factory generates steam exhaust, and the steam exhaust is passed through the steam exhaust air inlet.
4. the direct contact evaporation process equipment according to claim 2 using steam exhaust heat, which is characterized in that described
One evaporator and second evaporator are respectively arranged with distribution device, the distribution device of first evaporator with it is described
First air inlet is connected, and the distribution device of second evaporator is connected to the combustion space, the distribution device energy
It is enough to tear gas at micro-bubble.
5. a kind of direct contact evaporation process method using steam exhaust heat, which is characterized in that described to utilize the straight of steam exhaust heat
It contacts evaporation process method and uses the direct contact evaporated using steam exhaust heat described in any one of any one of claims 1 to 44
Manage equipment.
6. the direct contact evaporation process method according to claim 5 using steam exhaust heat, which is characterized in that successively lead to
The air for crossing the air preheater and air heat exchanger heating is passed through first evaporation by first air inlet
In tank, liquid to be processed is passed through in first evaporator by the first charging aperture, and the liquid to be processed is steamed described first
It evaporates in hair tank and carries out primary concentration, the level-one boil-off gas that the primary concentration generates is passed through the combustion of second evaporator
Burn space, the primary concentration liquid that the primary concentration generates is discharged by the first discharge port, and pass through described second into
Material mouth is passed through in second evaporator, and fuel gas is passed through the combustion space by pipeline, and the fuel gas is described
It is passed through in the liquid of second evaporator after the combustion-supporting lower burning of air included by level-one boil-off gas, so that the level-one is dense
Contracting liquid evaporates in second evaporator and carries out secondary concentration, the dual evaporation gas that the secondary concentration generates directly into
Enter ambient atmosphere or be back to air preheater to be condensed, the air that will be exchanged heat is preheated, the secondary concentration produces
Second evaporator is discharged by second discharge gate in raw secondary concentration liquid.
7. the direct contact evaporation process method according to claim 6 using steam exhaust heat, which is characterized in that the combustion
The gas that space combustion generates is burnt to be passed through in the primary concentration liquid of second evaporator to make the primary concentration liquid
Secondary concentration.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470564A (en) * | 2020-05-22 | 2020-07-31 | 清华大学 | Evaporation equipment and method with direct contact heat transfer and indirect contact heat transfer coupled |
| CN113680083A (en) * | 2021-10-22 | 2021-11-23 | 东营益美得化工有限公司 | Plasticizer dealcoholizes dewatering device |
| CN114656094A (en) * | 2022-04-26 | 2022-06-24 | 南京林普热能科技有限公司 | High-salinity organic wastewater evaporation method and device based on energy gradient utilization |
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