CN205856228U - Energy-saving sequence batch thermo-compression evaporation device - Google Patents
Energy-saving sequence batch thermo-compression evaporation device Download PDFInfo
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- CN205856228U CN205856228U CN201620436176.6U CN201620436176U CN205856228U CN 205856228 U CN205856228 U CN 205856228U CN 201620436176 U CN201620436176 U CN 201620436176U CN 205856228 U CN205856228 U CN 205856228U
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Abstract
This utility model provides one to be used for processing percolate, extends the energy-saving sequence batch thermo-compression evaporation device of fouling time.It includes for stock solution is evaporated the thermo-compression evaporation system concentrated, it also include being evaporated concentrating by thermo-compression evaporation system to stock solution after the double purification system that purifies of the once concentration liquid of gained, once concentration liquid is re-fed into thermo-compression evaporation system by the double purification liquid of double purification system purification gained and is evaporated being concentrated to give secondary concentration liquid.
Description
Technical field
This utility model relates to landfill leachate treatment field, a kind of energy-saving sequence batch thermo-compression evaporation device and
Technique (Sequencing Heat Pump Evaporate is called for short " SHPE ").
Background technology
Existing garbage leachate treatment process is broadly divided into biology+membrane process and evaporation technology, and biology+membrane process is more
Mature and stable, apply more, but it exists the shortcomings such as technological process length, floor space is big, operating cost is high, investment is big, simultaneously
The final disposal of nearly 30% reverse osmosis concentrated liquid could not solve the most always.So increasing local employing evaporator man in this year
Skill.Although percolate complicated component, bio-toxicity are big, biochemical treatment is highly difficult, but uses MVR evaporation process just to make problem
Become simple.MVR evaporation technology floor space is only the 20% ~ 30% of biochemistry+membrane process, and after evaporation, dope amount is only stock solution
10%；In addition also to have flow process short, simple to operate, with opening with the advantage such as stopping for evaporation technology；But evaporation treatment process in actual items
Easily fouling, cleaning frequency need stop cleaning once in high, general 3-5 days, often shut down once, need to consume about 250 ~ 350KWH and start energy
Consumption, and medicine consumption is big.Disadvantages mentioned above constrains it and develops further.
The material causing fouling can be divided into Organic substance and inorganic matter, and wherein inorganic matter is mainly calcium and magnesium silicon salt, such as carbon
Acid calcium, calcium sulfate, magnesium hydroxide and calcium magnesium silicate deposit, wherein based on calcium salt, Organic substance is mainly humic acids, right
Fouling sample analysis in certain project MVC equipment, calcium and magnesium salt particle constitutes " skeleton ", and humic acids is colloidal, constitutes " bonding
Agent ", it is high that the dirt that two kinds of materials are compounded to form has hardness, and viscosity is big, cleans the features such as difficulty, the long-acting fortune of the equipment that has a strong impact on
OK；Solving above-mentioned scale problems, conventional method has tenderizer and antisludging agent method, uses pre-treatment medicaments to soften and removes calcium ions and magnesium ions
Then there is dosing high cost, and the calcium ions and magnesium ions of residual still can fouling；Employing antisludging agent, then dosing high cost, and by
In percolate, pollutant component is complicated and diversified, usually occurs certain to react with antisludging agent, thus causes antisludging agent to lose efficacy.
Summary of the invention
In order to overcome above-mentioned technical problem, this utility model purpose is to provide a kind of for processing percolate, prolongs
The energy-saving sequence batch thermo-compression evaporation device of long fouling time.
Energy-saving sequence batch thermo-compression evaporation device described in the utility model, it includes for stock solution is evaporated concentration
Thermo-compression evaporation system, thermo-compression evaporation system include dope heat exchanger, distilled water heat exchanger, on-condensible gas heat exchanger, circulating pump,
There is evaporation cavity and the vaporization chamber of cooling chamber, separation chamber, heat pump, distillation water pot；This energy-saving sequence batch thermo-compression evaporation device is also
The double purification system purified including the once concentration liquid of gained after being evaporated concentrating by thermo-compression evaporation system to stock solution
System；Stock solution delivery outlet is connected with the coolant media entrance of dope heat exchanger and distilled water heat exchanger respectively；Dope heat exchanger and steaming
The coolant media outlet of distilled water heat exchanger is all connected with the coolant media entrance of on-condensible gas heat exchanger；On-condensible gas heat exchanger
Coolant media outlet connects circulating pump, and circulation delivery side of pump is connected with evaporation cavity bottom inlet, the concentrating pump of vaporization chamber respectively；Evaporation
Top of chamber outlet communicates with the gas access of separation chamber；The gas outlet of separation chamber is connected with the entrance of heat pump, hot delivery side of pump
Communicate with the cooling chamber entrance of vaporization chamber；The cooling chamber outlet of vaporization chamber and the thermal medium entrance phase of on-condensible gas heat exchanger
Even；The evaporation cavity bottom liquid outlet of vaporization chamber communicates with the entrance of distillation water pot；The bottom liquid outlet of distillation water pot is through steaming
Distilled water pump communicates with the heating agent entrance of distilled water heat exchanger；The top gas outlet of distillation water pot and the gas access phase of separation chamber
Logical；Concentrate delivery side of pump to communicate with the heating agent entrance of dope heat exchanger；Heating agent outlet and the double purification system of dope heat exchanger
Inlet communicate；The liquid outlet of double purification system respectively with the coolant media entrance of dope heat exchanger and distilled water heat exchanger
It is connected.
Above-mentioned energy-saving sequence batch thermo-compression evaporation device, double purification system is centrifugal separator or coagulating sedimentation dress
Put.
Above-mentioned energy-saving sequence batch thermo-compression evaporation device, in thermo-compression evaporation system, stock solution or double purification liquid are first through dense
Liquid heat exchanger and/or the heating of distilled water heat exchanger, then heat through on-condensible gas heat exchanger, then entered by circulating pump feeding vaporization chamber
Row evaporation, the gas after evaporation enters separation chamber and carries out gas-liquid separation, and the concentrated solution that gas-liquid separation obtains is delivered to dense through heavy liquor pump
It is re-fed into double purification system after the cooling of liquid heat exchanger；The indirect steam that gas-liquid separation obtains is sent into vapour compression machine pressurization and is heated up
After, send into vaporization chamber heat exchange cooling, the distilled water obtained delivers to distill water pot, and the distilled water in distillation water pot is delivered to distilled water and changed
Hot device cools down；The on-condensible gas of vaporization chamber is sent into on-condensible gas heat exchanger and is cooled down.
This utility model additionally provides a kind of for processing percolate, extends the energy-saving sequence batch heat of fouling time
Pump evaporation technology (Sequencing Heat Pump Evaporate is called for short " SHPE ").
Energy-saving sequence batch thermo-compression evaporation technique described in the utility model, uses thermo-compression evaporation system stock solution to be concentrated into
20% ~ 25%, cycles of concentration is 4 ~ 5 times, obtains once concentration liquid；After a period of time, thermo-compression evaporation system stops carrying out stock solution
Process, once concentration liquid employing double purification system after coagulating sedimentation and filtration, then add calcium sulfate, CaSO4Nucleus
The precipitation that in absorption waste water, the calcium of generation, magnesium, silicon etc. are formed；Double purification liquid after purifying sends into thermo-compression evaporation system, will
Double purification liquid concentrates 2-2.5 times, forms the secondary concentration liquid discharge of stock solution amount 5%-10%.
Above-mentioned energy-saving sequence batch thermo-compression evaporation technique, once concentration liquid, after coagulating sedimentation and filtration, adds sulfur
Concentration of suspension≤50mg/L before acid calcium.
Above-mentioned energy-saving sequence batch thermo-compression evaporation technique, stock solution or double purification liquid are first through dope heat exchanger and/or steaming
Distilled water heat exchanger heats, then heats through on-condensible gas heat exchanger, then is evaporated, after evaporation by circulating pump feeding vaporization chamber
Gas enter separation chamber carry out gas-liquid separation, the concentrated solution that gas-liquid separation obtains through heavy liquor pump deliver to dope heat exchanger cooling after again
Send into double purification system；After the indirect steam that gas-liquid separation obtains sends into vapour compression machine pressurization intensification, send into vaporization chamber and change
Heat cools down, and the distilled water obtained delivers to distill water pot, and the distilled water in distillation water pot is delivered to distilled water heat exchanger and cooled down；Steam
The on-condensible gas feeding on-condensible gas heat exchanger sending out room cools down.
The beneficial effects of the utility model: vapo(u)rization system is in running, and the forming process of fouling is, circulating mother liquor exists
Constantly with the contact process of heat exchanger tube surface, calcium ions and magnesium ions and the humic acids of its precipitation stick to heat exchanger tube surface, for a long time
Progressively accumulation causes final dirt layer, and its scaling degree is relevant with easy scale forming matter amount of precipitation, separates out the most, and fouling is formed the fastest,
The most relevant with time of contact, time of contact is the longest, and fouling is the most；Reduce circulating mother liquor scale forming matter concentration and and heat-transfer surface thereof
Time of contact can effectively delay scaling degree；Owing to circulating load is generally about 25-250 times of liquid inlet volume, therefore circulating mother liquor
Pollutant levels are identical with dope.
According to above-mentioned principle analysis, this utility model is that thermo-compression evaporation system carries out segmentation and concentrates also percolate
Carrying out two not good liquor purified treatment, auxiliary uses calcium sulfate nucleus absorbing calcium ions and magnesium ions, can effectively extend cycle of operation, reduces and cleans
Frequency and medicine consumption.
Accompanying drawing explanation
Fig. 1 is the theory diagram of energy-saving sequence batch thermo-compression evaporation device.
Fig. 2 is the schematic diagram of energy-saving sequence batch thermo-compression evaporation device.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
Energy-saving sequence batch thermo-compression evaporation device shown in Figure 1, is purified by thermo-compression evaporation system, two not good liquors and stores system
System composition.Percolate obtains once concentration liquid after being evaporated concentrating by thermo-compression evaporation system, and once concentration liquid is sent into
Two not good liquor purification and storage systems carry out purification and obtain double purification liquid.Double purification liquid first stores, by the time landfill leachate treatment
After a period of time, stop landfill leachate treatment, then the double purification liquid feeding thermo-compression evaporation system of storage is evaporated
It is concentrated to give secondary concentration liquid.
The particular make-up of energy-saving sequence batch thermo-compression evaporation device sees Fig. 2, and thermo-compression evaporation system is by separation chamber, distilled water
Heat exchanger, dope heat exchanger, on-condensible gas heat exchanger, once concentration liquid pump, secondary concentration liquid pump (once concentration liquid pump, secondary
Concentrate pump can merge into a concentrate pump.In Fig. 2, for clearer display once concentration liquid, secondary concentration liquid
Flow circuits, depicts once concentration liquid pump and secondary concentration liquid pump), circulating pump, distilled water pump, the composition such as distillation water pot；
Secondary liquid purification system can be centrifugal separating device or coagulative precipitation device, and once concentration liquid purifies through two not good liquors
Two not good liquors obtained after system purification, two not good liquor concentration of suspension are reduced to below 50mg/L.
Whole system process uses PLC to automatically control, and automatically switches former according to vapour compression machine inlet outlet pressure differential value
Liquid and a dope process, and automatically clean, easy and simple to handle.
Its specific works process.First percolate is concentrated into about 20% ~ 25% by thermo-compression evaporation system, and cycles of concentration is 4 ~
5 times, concentration is only the 40% ~ 50% of tradition vapo(u)rization system, and calcium ions and magnesium ions and humic acid amount of precipitation are less, and equipment can stable operation one
More than individual month；Dope of the 20% ~ 25% of residual is concentration of suspension≤50mg/L after coagulating sedimentation and filtration, the denseest
Liquid is being temporarily stored in dope tank, and after a period of time, thermo-compression evaporation system stops processing percolate stock solution, changes into processing one
Secondary dope.Before once concentration liquid is sent into thermo-compression evaporation system, (calcium sulfate addition is generally one first to add part of sulfuric acid calcium
The 5-10wt% of secondary concentrated solution, and secondary concentration liquid carries out partially recycled recycling, and reduces medicine consumption), CaSO4Nucleus can suspend
In waste water, its nucleus specific surface area formed is bigger simultaneously, it is easy in absorption waste water, the calcium of generation, magnesium, silicon etc. are formed
Precipitation.Once concentration liquid is sent into thermo-compression evaporation system after double purification and is concentrated, and double purification liquid is concentrated 2-2.5
Times, form the secondary concentration liquid discharge about stock solution amount 5%-10%, immediately equipment be carried out after being disposed, now due to
It is relatively light that leading portion processes stock solution scaling degree, and it is less owing to measuring that back segment processes dope, only the 20% ~ 25% of stock solution, and through secondary
Purifying, remove a part of scale forming matter, during double evaporation-cooling, it is shorter, when precipitate contacts with heat-transfer surface that it processes the time
Between shorter, scaling degree is the highest, easily cleans；Native system can effectively extend cycle of operation, reduces cleaning frequency, native system without
Leading portion sofening treatment and add antisludging agent, effectively reduces medicine consumption.
Claims (2)
- The most energy-saving sequence batch thermo-compression evaporation device, it includes for stock solution is evaporated the thermo-compression evaporation system concentrated, heat Pump vapo(u)rization system includes dope heat exchanger, distilled water heat exchanger, on-condensible gas heat exchanger, circulating pump, has evaporation cavity and cooling The vaporization chamber in chamber, separation chamber, heat pump, distillation water pot；It is characterized in that: this energy-saving sequence batch thermo-compression evaporation device also includes former After liquid is evaporated concentrating by thermo-compression evaporation system, the once concentration liquid of gained carries out the double purification system that purifies；Stock solution is defeated Outlet is connected with the coolant media entrance of dope heat exchanger and distilled water heat exchanger respectively；Dope heat exchanger and distilled water heat exchanger Coolant media outlet be all connected with the coolant media entrance of on-condensible gas heat exchanger；The coolant media of on-condensible gas heat exchanger goes out Mouth connects circulating pump, and circulation delivery side of pump is connected with evaporation cavity bottom inlet, the concentrating pump of vaporization chamber respectively；Evaporation cavity top exit Communicate with the gas access of separation chamber；The gas outlet of separation chamber is connected with the entrance of heat pump, hot delivery side of pump and vaporization chamber Cooling chamber entrance communicates；The cooling chamber outlet of vaporization chamber is connected with the thermal medium entrance of on-condensible gas heat exchanger；Vaporization chamber Evaporation cavity bottom liquid outlet communicates with the entrance of distillation water pot；The bottom liquid outlet of distillation water pot is through distilled water pump and distillation The heating agent entrance of water-to-water heat exchanger communicates；The top gas outlet of distillation water pot communicates with the gas access of separation chamber；Concentrating pump Outlet communicates with the heating agent entrance of dope heat exchanger；The heating agent outlet of dope heat exchanger and the inlet phase of double purification system Logical；The liquid outlet of double purification system is connected with the coolant media entrance of dope heat exchanger and distilled water heat exchanger respectively.
- Energy-saving sequence batch thermo-compression evaporation device the most as claimed in claim 1, is characterized in that: double purification system is centrifugal point Disembark or coagulative precipitation device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620436176.6U CN205856228U (en) | 2016-05-12 | 2016-05-12 | Energy-saving sequence batch thermo-compression evaporation device |
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| CN201620436176.6U CN205856228U (en) | 2016-05-12 | 2016-05-12 | Energy-saving sequence batch thermo-compression evaporation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939590A (en) * | 2018-08-10 | 2018-12-07 | 深圳市瑞升华科技股份有限公司 | Energy-saving ethylene glycol rectification and purification equipment and technique |
| CN111423047A (en) * | 2020-05-11 | 2020-07-17 | 北京天地人环保科技有限公司 | Method and system for evaporating and concentrating percolate concentrated solution |
-
2016
- 2016-05-12 CN CN201620436176.6U patent/CN205856228U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939590A (en) * | 2018-08-10 | 2018-12-07 | 深圳市瑞升华科技股份有限公司 | Energy-saving ethylene glycol rectification and purification equipment and technique |
| CN111423047A (en) * | 2020-05-11 | 2020-07-17 | 北京天地人环保科技有限公司 | Method and system for evaporating and concentrating percolate concentrated solution |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230112 Address after: 201418 Room 12303, Building 2, No. 1, Haikun Road, Fengxian District, Shanghai Patentee after: Shanghai Shengfeng Environmental Energy Technology Co.,Ltd. Address before: 201203 room A662-30, 2 building, 351 Guo Shou Jing Road, Pudong New Area (Shanghai) free trade zone, Shanghai. Patentee before: SHANGHAI PUSHI ENV TECH Co.,Ltd. |