CN103508577A - Quench tank cooling water recycling, energy-saving and consumption-lowering system during tinplate production - Google Patents
Quench tank cooling water recycling, energy-saving and consumption-lowering system during tinplate production Download PDFInfo
- Publication number
- CN103508577A CN103508577A CN201310470831.0A CN201310470831A CN103508577A CN 103508577 A CN103508577 A CN 103508577A CN 201310470831 A CN201310470831 A CN 201310470831A CN 103508577 A CN103508577 A CN 103508577A
- Authority
- CN
- China
- Prior art keywords
- energy
- saving
- quench tank
- tinplate
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a quench tank cooling water recycling, energy-saving and consumption-lowering system during tinplate production. The quench tank cooling water recycling, energy-saving and consumption-lowering system comprises a circulating pool, wherein the overflowing port of a quench tank is connected with a collecting pool; the collecting pool is connected with a filter; the filter is connected with the circulating pool through a variable-frequency pump set; the circulating pool is connected with a plate-type heat exchanger; the plate-type heat exchanger is connected with the filter; the filter is connected with a high-pressure washing workstation through the variable-frequency pump set. The quench tank cooling water recycling, energy-saving and consumption-lowering system production has the benefits as follows: water is effectively utilized, collected and treated and recycled and heat is sufficiently utilized through the heat exchange equipment, so that the load of an original sewage treatment facility is reduced, resources are sufficiently saved, and the scaling situation of a pipe is greatly improved.
Description
Technical field
The present invention relates to tinplate production field, specifically the energy-saving and cost-reducing system of quench tank water coolant reuse in a kind of tinplate production.
Background technology
The tinning plant quench tank process section of tinplate production process, because of processing requirement, needs a large amount of water coolants, about 16m
3/ hr.Current this part water and the heat energy coming with exchange, to collect to be together discharged in sewage treatment facility, there is following shortcoming in such processing mode: the processing load that has increased first sewage treatment facility, second wasted a large amount of water sources, the also loss in vain of three heat energy, the situation of pipeline scale also becomes increasingly conspicuous.
Summary of the invention
The present invention seeks to the deficiency existing for the above prior art, a kind of effective recycling overflow water is provided, heat energy is fully utilized simultaneously, reduced the load of raw waste water treatment facility, the energy-saving and cost-reducing system of quench tank water coolant reuse in the tinplate economizing on resources production.
For achieving the above object, technical scheme of the present invention is: the energy-saving and cost-reducing system of quench tank water coolant reuse in tinplate production, it comprises circulatory pool, the overflow port of quench tank is connected with collecting tank, described collecting tank is connected with strainer, described strainer is connected with described circulatory pool by variable frequency pump group, described circulatory pool is connected with plate-type heat exchanger, described plate-type heat exchanger connects and is connected with strainer, described strainer is connected with high pressure washing station by variable frequency pump group, by the reuse after treatment of the overflow water of quench tank and high pressure washing station, reach the object of recycle, and can effectively utilize waste heat wherein.
Described circulatory pool is connected with pure water device, for supplementing pure water.
Described collecting tank can be the piecing assembly stainless steel water tank of a 2m * 3m * 2m, has high temperature resistant and corrosion; Base plate, water distribution board, wallboard, top board, manhole, production well, manhole ladder, outside staircase, pillar, pipe connecting flange and steel base are set in described water tank.Described water tank volume has the plurality of specifications such as 1000mm * 1000mm, 1000mm * 500mm, 500mm * 500mm, can be assembled into all size water tanks such as rectangular parallelepiped or square as required, not contaminated for guaranteeing water quality, all interior annexes of described water tank adopt stainless steel.
Described variable frequency pump group is minimum to be comprised of two corrosion-and high-temp-resistant pumps, the CDL65-20 MODEL VERTICAL MULTISTAGE PUMP of the preferred southern Special Pump industry of described corrosion-and high-temp-resistant pump.
Described strainer is selected full-automatic stainless steel (SUS304) self-cleaning filter, and filtering accuracy is up to 200 orders, for solving general strainer, holds susceptible to plugging problem.
Described plate-type heat exchanger is selected stainless steel plate type heat exchanger, and described plate-type heat exchanger divides three grades of settings successively, to improve heat transfer effect.
Described circulatory pool is divided into settling tank and run-off two portions, described run-off setting and settling tank one side, and
Described settling tank bottom funnel, so that throw out is collected and cleaning, and at the pre-buried blow-off line in settling tank bottom, for periodic cleaning throw out;
Described circulatory pool is steel and concrete structure pond, as moisturizing, water storage and circular buffering pond, uses, and Chi Ding does special water distribution system, can further reduce water temperature, improves the working efficiency of quench tank.Described special water distribution system refers to that at circulatory pool top, with pvc pipe, connecting ABS water distributor does netted layout, and object is to make water distribution even, efficiently radiates heat.
Described strainer can be accurate filter, and described accurate filter is 2 cover wire wound accurate filters, filtering accuracy 5 μ m, stainless steel casing, 40 " the every cover of * 40 core, and a set of use, another set of standby, meet more renew cartridge and production requirement continuously.
Water pipe wherein selects high-quality SUS304 steel material to make, and by flange butt welding, connects.
Compared with prior art, the invention has the beneficial effects as follows: this part water is effectively utilized to collection, utilize heat exchanging apparatus that heat energy is fully utilized simultaneously, reduced the load of raw waste water treatment facility, also fully save resource, can greatly improve the fouling present situation of pipeline simultaneously; In the process of quench tank heat exchange, because the factor of washing away, the materials such as a large amount of tin, silicon, ferrimanganic in water coolant, have been brought into, when engineering design, taken into full account these several materials feature of easy fouling at a certain temperature, increase advanced at present pure water manufacturing system simultaneously, allow the quality of quench tank water coolant, efficiency greatly improve.
Accompanying drawing explanation
Fig. 1 is the FB(flow block) of the energy-saving and cost-reducing system of quench tank water coolant reuse during tinplate of the present invention is produced;
Fig. 2 is the schema of the energy-saving and cost-reducing system of quench tank water coolant reuse during tinplate of the present invention is produced;
Fig. 3 is the schema of this pure water device;
Fig. 4 is the structural map of water tank of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail.
The energy-saving and cost-reducing system of quench tank water coolant reuse in tinplate production, as depicted in figs. 1 and 2, it comprises circulatory pool, the overflow port of quench tank 1 is connected with collecting tank, described collecting tank is connected with strainer 4, described strainer 4 is connected with described circulatory pool by variable frequency pump group 5, described circulatory pool is connected with plate-type heat exchanger 11, described plate-type heat exchanger 11 is connected with strainer 4, described strainer 4 is connected with high pressure washing station by variable frequency pump group 5, by the reuse after treatment of the overflow water of quench tank 1 and high pressure washing station, reach the object of recycle, and can effectively utilize waste heat wherein.Described circulatory pool is connected with pure water device, for supplementing pure water, allows the quality of quench tank water coolant, efficiency greatly improve.Wherein, the overflow port of described quench tank arranges temperature probe 2, for monitoring the temperature of overflow port liquid.Described overflow port arranges variable valve 3 and is connected with running water pipe, for make-up water source where necessary.Described variable valve can be electric adjustable nodal pattern butterfly valve.Described overflow port in the situation that original overflow spout can not meet overflow requirement, original design for overflow 16m
3/ hr, overflow flow velocity 0.3m/s, 88 ℃ of temperature, transform as and utilize recirculated water in the situation of approximately 25 ℃ of left and right of temperature of cooling water, and temperature of cooling water is at 50-60 ℃, and the water yield can be increased to 50-60m
3/ hr left and right; Increasing overflow port caliber is DN250 * 1.Described collecting tank as shown in Figure 4, can be 2m * 3m * 2m piecing assembly stainless steel water tank (about 10m
3), high temperature resistant and corrosion.In wherein said water tank, be provided with base plate, drain board, wallboard, top board, manhole, production well, manhole ladder, outside staircase, pillar, pipe connecting flange, steel base.Wherein, stainless steel wallboard single-piece has the plurality of specifications such as 1000mm * 1000mm, 1000mm * 500mm, 500mm * 500mm by water tank volume, can be assembled into all size water tanks such as rectangular parallelepiped or square as required, not contaminated for guaranteeing water quality, all interior annexes of water tank must adopt stainless steel.
Described variable frequency pump group 5 is the lifting power of recycle, because of this station temperature higher (more than 88 ℃), selects especially corrosion-and high-temp-resistant pump group, to be arranged in hot environment.Water pump in described water supply unit is according to initial parameter, selects 2 of the CDL65-20 MODEL VERTICAL MULTISTAGE PUMP of southern Special Pump industry, and its performance perameter is as following table:
CDL65-20 technical parameter:
Pipe valve adopts the high temperature resistant series product of stainless steel, and unit effluent adopting DN125 flange-interface, to plug into water supply line.
Control section according to processing requirement select ABB frequency transformer, Siemens PLC C,, Danfoss pressure unit, other low-voltage apparatus all adopts Schneider product.
Control mode is as follows: this waterworks is controlled and adopted automatically+manual fully automatic operation pattern, pump working mode: the using and the reserved.
1, automated manner: power turn-on switch, when transfer lever is when automatic, water pump is by frequency transformer variable frequency starting, and system enters water supply working order, and now pressure unit is examined ductwork pressure the real-time feedback signal to a 4-20mA of frequency transformer:
A. when ductwork pressure is during lower than set(ting)value, frequency transformer output frequency rises, and pump rotary speed is accelerated, and supplements rapidly ductwork pressure.
B. when ductwork pressure equals set(ting)value, frequency transformer regulates a constant frequency to guarantee that ductwork pressure is with constant pressure work automatically.
C. when pipe network flow is undergone mutation, can automatically regulate by the inner PID of frequency transformer, reserve pump will automatically be started and be supplemented by soft initiator; A main pump moves to maximum load, and service discharge can not meet system water requirement, and No. two stand-by pump will put into operation automatically.
D. when pipe network water reduces, system, by first to open the principle of first stopping, is cut away power frequency operation stand-by pump successively, until meet system water requirement.
E. pressure set points can regulate between 0-4Bar.
2, manual mode: when transfer lever is during in manual mode, can select arbitrarily to press No. 1 or No. 2 starting mode of pump buttons are realized starting mode of pump by soft initiator and supplied water. press stop button water pump and quit work.
The advantage of above-mentioned control mode is:
1, adopt frequency transformer closed-loop control, can carry out on demand software configuration setting pressure and carry out PID adjusting, output power of motor is changed with the variation of load, in the prerequisite that meets service requirements, be issued to energy-conservation to greatest extent.
2, due to fall-back and soft starting shipment, reduce vibration, noise and wearing and tearing, extended maintenance of equipment cycle and work-ing life, reduced maintenance maintenance workload, and reduced electrical network is impacted, improved the reliability of system.
3, system has various sfgd.s, and the operation factor of system and safe reliability are improved greatly.
Described strainer is selected full-automatic stainless steel (SUS304) self-cleaning filter, and filtering accuracy is up to 200 orders, to solve general strainer, holds susceptible to plugging problem, and this equipment is arranged in hot environment.
Described self-cleaning filter structure is comprised of main frame and electric control box, and main machine structure is comprised of parts such as filter body, filtration core component, the electronic wash water valve of step-down gear, transmission shaft, controllers.Strainer is a flat cover tank body, and tank body top is muddy water chamber, and middle part is that clear water Qiang， bottom is blowdown chamber.Upper lateral part water inlet, middle sidepiece water outlet, electronic wash water valve is arranged at bottom.Filter element is stainless steel fine groove plain weave filter screen.Fully automatic cleaning filter has that treatment capacity is large, long service life, high, the resistant to elevated temperatures feature of cleaning efficiency.In operational process, material continues to flow, and has realized continuous, automatic production.Native system is selected 2 of SQD series stainless steel Full-automatic self-cleaning high-temperature resistant filters, the using and the reserved.
Described plate-type heat exchanger 11 is selected stainless steel plate type heat exchanger, and described plate-type heat exchanger divides three grades of settings successively, to improve heat transfer effect.
The type selection calculation of plate-type heat exchanger:
Thermal load can represent with following formula:
Q=m×cp×dt
Q=thermal load (kW)
M=mass velocity (kg/s)
Cp=specific heat (kJ/kg ℃)
The out temperature of dt=medium poor (℃)
Existing situation:
88 ℃ of overflow port temperature, plate changes 50 ℃ of rear estimating temperatures, mass velocity 16.67kg/s(60m
3/ hr); Specific heat of water 4.2kJ/kg ℃
Calculation of Heat Load is as follows:
Q
always=m * cp * dt=16.67 * 4.2 * 38=2660.532kW
The coefficient of heat transfer value that plate changes is 0.75
The thermal load of actual needs exchange is Q
always÷ 0.75=3547.376kW
Thermal load conversion Calculation is as follows:
1, AC heat exchanging part: 50 ℃ of inlet temperatures, export requirement temperature 60 C, mass velocity 2.22kg/s(16m
3/ hr)
Q
AC=m×cp×dt=4.44×4.2×10=186.6kW
2, Pi+CH heat exchanging part: 25 ℃ of inlet temperatures, export requirement temperature 50 C, mass velocity 4.45kg/s(16m
3/ hr)
Q
Pi+CH=m×cp×dt=4.45×4.2×25=467.25kW
3, tap water amount of makeup water part:
Q
from=Q
always-(Q
aC+ Q
pi+CH)=2893.526kW
32 ℃ of inlet temperatures, export requirement temperature 50 C, mass velocity 38.275kg/s(137.79m
3/ hr).
The plate number of remodeling of selecting:
1, AC heat exchanging part: BR33 interface DN100 heat interchanging area 12m
21 cover;
2, Pi+CH heat exchanging part: BR33 interface DN100 heat interchanging area 20m
21 cover;
3, tap water amount of makeup water part: BR33 interface DN100 heat interchanging area 40m
21 cover.
The feature of above-mentioned plate-type heat exchanger is as follows:
1, energy-efficient: its coefficient of heat transfer is at 3000-4500kcal/m
2than the high 3-5 of the thermo-efficiency of tube and shell heat exchanger doubly.
2, compact construction: plate-type heat exchanger slab close-packed arrays, compare with other heat exchanger types, the floor space of plate-type heat exchanger and take up room lessly, the plate-type heat exchanger of the identical heat of area is only 1/5 of tube and shell heat exchanger.
3, easily clean easy accessibility: plate-type heat exchanger clamps clamping plate plate by fishbolt, so easy accessibility, can open cleaning at any time, simultaneously because plate face is bright and clean, turbulent extent is high, less scaling.
4, long service life: plate-type heat exchanger adopts stainless steel or the compacting of titanium alloy plate, can resistance to various corrosive mediums, and rubber cushion can arbitrarily be changed, and conveniently detachable maintenance.
5, strong adaptability: plate-type heat exchanger slab is independent component, can arbitrarily increase and decrease flow process on request, various informative; Requirement applicable to various different process.
Described circulatory pool can be built near sewage works, plans to build the about 100m of L:5m * W:4m * H:5m
3steel and concrete structure pond, is used as moisturizing, water storage and circular buffering pond, does flow structure in pond, fractional precipitation pond 7 and run-off 6 two portions, and Chi Ding does special water distribution system, can further reduce water temperature, improves the working efficiency of quench tank.Settling tank part bottom funnel in pond, so that throw out is collected and cleaning, is building the circulatory pool initial stage the pre-buried blow-off line 10 in settling tank bottom, periodic cleaning throw out.Level monitor 8 and device for detecting temperature 9 are set on run-off 6.
Described variable frequency water supply unit is effective save energy design, is arranged on by circulatory pool, by interlocking (with reference to quench tank trough inner water temperature) with quench tank water inlet electric butterfly valve, automatically regulates service discharge, guarantees constant operating pressure simultaneously.
In technological process, inevasible micro-particulate matter and the total dissolved solid of having, designs 2 cover wire wound accurate filters, filtering accuracy 5 μ m, stainless steel casing, 40, and " the every cover of * 40 core, the using and the reserved meet more renew cartridge and production requirement continuously.
Described water pipe 15 use high-quality SUS304 materials, flange butt welding connects.According to system water supply flow, can calculate water transfer pipe network caliber by rational velocimeter is thus DN125.
In order to prevent that pipe network from occurring accident because of water hammer, design maximum flow velocity should not surpass 2.5-3.0m/s; When carrying muddy former water, for fear of suspended impurity in water, in pipeline, deposit, minimum flow velocity must not be less than 0.6m/s conventionally, and the change in flow scope of visible technical permission is larger.Flow velocity is chosen little, and pipe network cost is high; Flow velocity is chosen greatly, and operation power charge is high.Consider, this programme is chosen a comparatively economic flow velocity 1.4m/s, and water amount is 61.7m3/h.
Select different in flow rate to calculate flow as following table
| Caliber (DN) | 125 | 125 | 125 | 125 | 125 |
| Choose flow velocity (M/S) | 1.2 | 1.4 | 1.6 | 1.8 | 2.0 |
| Calculated flow rate (M3/h) | 52.9 | 61.7 | 69.1 | 77.7 | 86.4 |
Described pure water moisturizing unit provides raw water quality situation according to user and designs producing water water quality requirement.The configuration of system and set up and all can enough meet the requirement under flow condition, take automatic, energy-conservation, simple to operate, environmental protection and safety is principle, and the system that guarantees can operation steady in a long-term.
According to the evaporation loss that supplements quench tank station, design a set of 8 tons of/hour first-stage reverse osmosis pure water equipments, water inlet water source is Guangzhou tap water, produces water water quality and can reach below 20 μ s/cm, the system ratio of desalinization of reverse osmosis unit is not less than 98%(18 ℃), can remove part of heat energy simultaneously.Reverse osmosis is most widely used a kind of desalination technology in current water treatment system equipment, has high desalination ability, and operating safety, flexible, simple to operate.Reverse osmosis system comprises that pre-processing device, 5u cartridge filter, high-pressure pump, reverse osmosis membrane group, cleaning system and six parts of control instruments form.
More than describe preferred embodiment of the present invention in detail, should be appreciated that the ordinary skill of this area just can design according to the present invention be made many modifications and variations without creative work.Therefore, all technician in the art according to the present invention design on prior art basis by logic analysis, reasoning or according to the available technical scheme of limited experiment, all should be among the determined protection domain by these claims.
Claims (9)
- Tinplate produce in the energy-saving and cost-reducing system of quench tank water coolant reuse, it comprises circulatory pool, it is characterized in that, the overflow port of quench tank is connected with collecting tank, described collecting tank is connected with strainer, and the logical variable frequency pump group of described strainer is connected with described circulatory pool, and described circulatory pool is connected with plate-type heat exchanger, described plate-type heat exchanger connects and is connected with strainer, and described strainer is connected with high pressure washing station by variable frequency pump group.
- 2. the energy-saving and cost-reducing system of quench tank water coolant reuse in producing according to tinplate claimed in claim 1, is characterized in that, described circulatory pool is connected with pure water device.
- 3. the energy-saving and cost-reducing system of quench tank water coolant reuse in producing according to tinplate claimed in claim 1, is characterized in that, described collecting tank is stainless steel water tank, high temperature resistant and corrosion; Base plate, drain board, wallboard, top board, manhole, production well, manhole ladder, outside staircase, pillar, pipe connecting flange and steel base are set in described water tank.
- 4. the energy-saving and cost-reducing system of quench tank water coolant reuse in producing according to tinplate claimed in claim 1, is characterized in that, described variable frequency pump group is minimum to be comprised of two corrosion-and high-temp-resistant pumps, and described corrosion-and high-temp-resistant pump is MODEL VERTICAL MULTISTAGE PUMP.
- 5. the energy-saving and cost-reducing system of quench tank water coolant reuse in producing according to tinplate claimed in claim 1, is characterized in that, described strainer is selected full-automatic stainless steel self-cleaning filter, and filtering accuracy is up to 200 orders.
- 6. the energy-saving and cost-reducing system of quench tank water coolant reuse in producing according to tinplate claimed in claim 1, is characterized in that, described plate-type heat exchanger is stainless steel plate type heat exchanger, and described plate-type heat exchanger divides three grades of settings successively.
- 7. the energy-saving and cost-reducing system of quench tank water coolant reuse in producing according to tinplate claimed in claim 1, it is characterized in that, described circulatory pool is divided into settling tank and run-off two portions, described run-off setting and settling tank one side, and described settling tank bottom funnel.
- 8. the energy-saving and cost-reducing system of quench tank water coolant reuse in producing according to tinplate claimed in claim 1, is characterized in that, described strainer is accurate filter, and described accurate filter is 2 cover wire wound accurate filters, filtering accuracy 5 μ m.
- 9. the energy-saving and cost-reducing system of quench tank water coolant reuse in producing according to tinplate claimed in claim 1, is characterized in that, water pipe is that SUS304 steel material is made, and by flange butt welding, connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310470831.0A CN103508577A (en) | 2013-10-10 | 2013-10-10 | Quench tank cooling water recycling, energy-saving and consumption-lowering system during tinplate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310470831.0A CN103508577A (en) | 2013-10-10 | 2013-10-10 | Quench tank cooling water recycling, energy-saving and consumption-lowering system during tinplate production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103508577A true CN103508577A (en) | 2014-01-15 |
Family
ID=49892071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310470831.0A Pending CN103508577A (en) | 2013-10-10 | 2013-10-10 | Quench tank cooling water recycling, energy-saving and consumption-lowering system during tinplate production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103508577A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760136A (en) * | 2004-10-15 | 2006-04-19 | 中国科学院生态环境研究中心 | A kind of industrial water system clean preparation method that comprises recirculated cooling water and boiler water supply |
| KR20090016863A (en) * | 2007-08-13 | 2009-02-18 | 글로벌 인바이론먼트 에세스 홀딩즈 리미티드 | Drain treating device |
| CN102249354A (en) * | 2011-04-26 | 2011-11-23 | 山东华天环境有限公司 | New method for energy-saving recycling of waste water in medical waste treatment |
| CN102249473A (en) * | 2011-05-25 | 2011-11-23 | 中色科技股份有限公司 | Method for utilizing waste heat of turbid circulating backwater of casting machines |
| CN103172191A (en) * | 2011-12-20 | 2013-06-26 | 上海巴安水务股份有限公司 | Whole coal chemical industry plant condensate water processing system |
-
2013
- 2013-10-10 CN CN201310470831.0A patent/CN103508577A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760136A (en) * | 2004-10-15 | 2006-04-19 | 中国科学院生态环境研究中心 | A kind of industrial water system clean preparation method that comprises recirculated cooling water and boiler water supply |
| KR20090016863A (en) * | 2007-08-13 | 2009-02-18 | 글로벌 인바이론먼트 에세스 홀딩즈 리미티드 | Drain treating device |
| CN102249354A (en) * | 2011-04-26 | 2011-11-23 | 山东华天环境有限公司 | New method for energy-saving recycling of waste water in medical waste treatment |
| CN102249473A (en) * | 2011-05-25 | 2011-11-23 | 中色科技股份有限公司 | Method for utilizing waste heat of turbid circulating backwater of casting machines |
| CN103172191A (en) * | 2011-12-20 | 2013-06-26 | 上海巴安水务股份有限公司 | Whole coal chemical industry plant condensate water processing system |
Non-Patent Citations (1)
| Title |
|---|
| 盖福英等: ""鞍钢7号高铁改造性大修冷却系统采用的新技术"", 《炼铁》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104478137A (en) | Energy-saving recycling combination system for industrial circulating cooling water | |
| CN101462809A (en) | Comprehensive recovery method for heat energy and water from printing and dyeing industry wastewater and heat-exchanging system | |
| CN211823393U (en) | Constant temperature water supply type industrial cooling water circulation system | |
| CN205699783U (en) | Glass washing wastewater recycle device | |
| CN112794505A (en) | Electric furnace short-flow steel plant water treatment and wastewater zero discharge process | |
| CN103508577A (en) | Quench tank cooling water recycling, energy-saving and consumption-lowering system during tinplate production | |
| CN101493292A (en) | Sewerage heat energy recovery system | |
| CN201177469Y (en) | Sewage water heat-energy recovering apparatus | |
| CN111033121B (en) | Double-loop nuclear reactor steam generating device with purging and draining system | |
| CN203513702U (en) | Heating system using low-temperature waste heat of blast furnace slag flushing water | |
| CN202755210U (en) | Small cheese dyeing machine wastewater and waste heat recycling device | |
| CN215288581U (en) | Complete equipment for producing cationic polymer monomer by continuous reaction | |
| CN104215095A (en) | Waste water heat energy recovery system | |
| CN105417832B (en) | A kind of integrated intelligence oilfield produced water processing unit and method | |
| CN210505696U (en) | Industrial circulating cooling water descaling equipment | |
| CN204780277U (en) | Printing and dyeing wastewater recovery unit | |
| CN207050492U (en) | A kind of My heat recovery system of sewage | |
| CN201427957Y (en) | Multifunctional oil purifier | |
| CN210855307U (en) | Titanium tetrachloride edulcoration device of institutional advancement | |
| CN217051877U (en) | Scale inhibition system for circulating water system of power grid converter station | |
| CN206069419U (en) | A kind of water for industrial use pretreatment system of environment-friendly high-efficiency | |
| CN211475510U (en) | Spraying reuse water cyclic utilization system | |
| CN102071727B (en) | Reuse technology for photovoltaic ultrapure water wastewater and dual-pipeline water supply device | |
| CN201344743Y (en) | Heat exchanger of heat energy and water integrative recovery and reuse of printing and dyeing industry waste water | |
| CN112619194B (en) | High-temperature hot water comprehensive utilization device of polyvinyl alcohol waste liquid recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140115 |