CN101493292B - Sewerage heat energy recovery system - Google Patents

Sewerage heat energy recovery system Download PDF

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Publication number
CN101493292B
CN101493292B CN2008100595242A CN200810059524A CN101493292B CN 101493292 B CN101493292 B CN 101493292B CN 2008100595242 A CN2008100595242 A CN 2008100595242A CN 200810059524 A CN200810059524 A CN 200810059524A CN 101493292 B CN101493292 B CN 101493292B
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CN
China
Prior art keywords
sewage
filter
heat
valve
heat energy
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Expired - Fee Related
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CN2008100595242A
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Chinese (zh)
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CN101493292A (en
Inventor
胡亚春
甄跃进
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RENXIN ENERGY-SAVING ENVIRONMENTAL PROTECTION EQUIPMENT (SHANGHAI) Co Ltd
Original Assignee
RENXIN ENERGY-SAVING ENVIRONMENTAL PROTECTION EQUIPMENT (SHANGHAI) Co Ltd
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Priority to CN2008100595242A priority Critical patent/CN101493292B/en
Publication of CN101493292A publication Critical patent/CN101493292A/en
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Publication of CN101493292B publication Critical patent/CN101493292B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to a recovery system for sewage heat energy, belonging to the field of industrial sewage heat energy recovery. Heat energy recovery systems commonly adopted at home have the problems that heat exchange efficiency is low, a filter is not capable of automatic flush and needs a large quantity of clear water, a heat exchanger has the problems of blockage and serious pollution and on-line display and accumulative calculation of heat energy are not feasible. The system of the invention comprises a granule filtering device for automatic switch operation and back flush, a heat exchanger for heat exchange between cool water and hot water, a system for automatic switch operation and back flush of the filter and a heat energy accumulation confirming device of the whole recovery system. The heat energy recovery system provided by the invention can realize automatic operation and control over back flush process of the filter, improve efficiencies in impurity filtration of the sewage and heat exchange and provide functions of accumulative calculation and on-line display of heat energy so as to realize real-time monitoring to the system performance.

Description

Sewerage heat energy recovery system
[technical field]
The present invention relates to a kind of hot sewerage heat energy recovery system, belong to sewage heat energy and reclaim the field.
[background technology]
Waste Heat Recovery can produce economic benefit and social benefit, and in energy-conservation joint source, protection environment aspect plays an important role.Domestic Waste Heat Recovery generally adopts the heat transmission equipment that comprises heat exchanger.For the used heat in the sewage; Places such as the school of central heating, office and hotel, the outdoor bathing place hot sewage of discharging for example; Existing sewage heat recovery system is taked sewage through simple filtration often, removes to get into heat-exchange apparatus again behind the thicker impurity of major part and carry out heat exchange, still has large granular impurity and suspended impurity in the sewage; Can result in blockage, pollute and wear and tear heat exchanger; In order to guarantee the normal operation of heat exchanger, need regular filter rinsed, heat exchanger and pipeline, manpower that not only can labor, also to bear because the loss that shut-down brought that cleaning causes; Filter rinsed, heat exchanger and other pipelines also need a large amount of clear water, thereby cause the waste and the secondary pollution of water resource.For technical problems such as a whole set of sewage heat recovery system behavior in service affirmation and amount of energy saving affirmations, all be in the research now in addition.
[summary of the invention]
The technical problem that the present invention will solve and the technical assignment of proposition are the defectives that overcomes prior art; A kind of heat recovery system that can be widely used in reclaiming sewage heat energy is provided; It can improve the time and the efficient of heat energy recovery rate and heat exchanger normal operation, realizes that automatic controlled filter device switches and backwash process.Further aim of the present invention is to realize the function of real-time confirmation equipment running status and performance.For this reason, the present invention adopts following technical scheme:
Sewerage heat energy recovery system; Comprise filter, pass through heat-exchange device, electrical control gear that pipeline is connected with filter; It is characterized in that described filter is two particle type filter arranged side by side, the filter top is provided with sewage inlet, and the below is provided with the drainage outlet; The sewage inlet top of two filters is provided with the bridge-type valve, and described bridge-type valve comprises two groups of group valves arranged side by side, and every row group valve comprises the single valve of two series connection, and described sewage inlet is connected to the series connection single valve middle-end of the corresponding group of bridge-type valve valve through pipeline; Bridge-type valve two upper end of group valve side by side is connected with sewage pipe, and there is drainpipe the lower end; The drainage outlet is imported and exported with two two-way sewage of heat-exchange device through pipeline and is connected; Described heat-exchange device also is provided with cooling water inlet and warm water outlet.This set can just can clean filter under the situation of not halt system operation, has improved the operational efficiency of system.Two particle type filter can automatically switch and move and the realization backwashing function, thereby make cleaning filtration be difficult for stopping up, and remain high-quality filtration state; In addition, what backwash water adopted is the sewage after the heat exchange, has practiced thrift water resource.
Sewerage heat energy recovery system is characterized in that on the described sewage pipe pressure sensor being set; Described single valve is a pneumatic operated valve.A preset value is set in electrical control gear, and pressure sensor transfers to electrical control gear with signal, and electrical control gear sends control signal automatically opens back flush valves, and Filter valve is closed, and carries out backwash process; Simultaneously, the back flush valves of another particle type filter is closed, and Filter valve is opened, and carries out filter process, thus the automatic switchover of filter process and backwash process, need not personal management, the saving cost of human resources is also enhanced productivity.The electrical control gear here adopts conventional Electrical Control Technology, so seldom describe, also can use differential pressure controller, flowmeter for pressure sensor, and its effect is similar.Because this programme relates to heavier load and security performance is had relatively high expectations, and is good so select pneumatic operated valve for use.
For the improving and replenishing of technique scheme, can increase following technical characterictic:
Sewerage heat energy recovery system is characterized in that said heat-exchange device is the template heat exchanger, and the cooling water inlet that is positioned at heat exchanger one side is higher than the warm water outlet of opposite side.This set can prolong the glide path of hot water or cold water's current in heat exchanger, carries out exchange heat more fully, improves heat exchange efficiency.
Sewerage heat energy recovery system; It is characterized in that one a cold water temperature sensor and a flowmeter being set at described cooling water inlet place; Described warm water exit is provided with a warm water heat detector, and described cold water temperature sensor, warm water heat detector and flowmeter are connected with an accumulation calorimeter through lead respectively.Owing to increased the accumulation calorimeter, thereby can add up heat.
Sewerage heat energy recovery system is characterized in that being provided with the filter plate of being with filter opening in the said granular pattern filter, is filled with ball-shaped stainless steel steel ball on the filter plate, and the diameter of steel ball is greater than the aperture of filter opening.This material can be trapped in its surface with the suspended particulate impurity in the sewage.Because rounded material when being staggered, leaves the space, can let sewage pass through.In addition,, do not run into " leaking material " and phenomenons such as " run and expect " in then can not occurring filtering with the diameter setting of spherical filtering material single aperture greater than the filter filter opening of bottom support.Said ball-shaped filtering material is the stainless steel steel ball, and it is difficult for being corroded, and service life and filter are suitable, and filtering materials such as conventional quartz sand or filter core just need to change once not enough half a year; In addition, steel ball is heavier, presses tightlyer each other, thereby makes that mutual slit is little, so filter effect is better.
Sewerage heat energy recovery system; It is characterized in that preposition centrifugal filter of described particle type filter or sewage jar; Said centrifugal filter or sewage jar are provided with elementary sewage inlet and elementary drainage mouth, and the bottom is provided with the waste residue outlet, and elementary drainage mouth is connected with sewage pipe.Bigger for impurity and foreign matter, suspension is many, has the sewage of greasy dirt, and grade one filter only is set, and impurity and foreign matter filter insufficient, can remove impurity and greasy dirt better through centrifugal type filter.Centrifugal type filter is conventional equipment for separating liquid from solid, is used for filtering proportion foreign matter and the greasy dirt bigger than water in the sewage, and pressure type was held back separating and filtering about particle type filter belonged to, and was used for holding back the suspended particulate matter in the sewage.Through behind the double-filtration, most impurity and foreign matter in the hot sewage have been filtered, and hot sewage can not make heat exchanger stop up, pollute and wearing and tearing after getting into heat-exchange device, thereby can make heat exchanger accomplish stable performance better, realizes normally operation.The sewage jar is with mode initial gross separation sewage and impurity such as staticly settling, protecting follow-up unit to move better.
Sewerage heat energy recovery system is characterized in that the rearmounted sewage pump of described elementary drainage mouth.Be convenient to the sewage lifting is transported in the filter.
This sewerage heat energy recovery system has been optimized the aggregate erection relation of heat-exchange device and filter; Its advantage applies exists: 1. particle type filter arranged side by side combines with electrical control gear; Can realize that this filter automaticallyes switch and backwash process control; Improve heat exchanger effectiveness greatly, the highlyest be expected to reach 85-98%; 2. the present invention adopts the sewage after the heat exchange that filter is carried out automatic backwash, has both suitably reduced quantity of wastewater effluent, has practiced thrift precious water resource again; 3. the present invention relies on advanced filter, effectively removes bulky grain and suspended material in the sewage, prevents foreign body obstruction and wearing and tearing heat-exchange device in the sewage; 4. the heat-exchange device of Rational structure can make hot sewage and the sufficient heat exchange of cold water, farthest extracts the heat energy in the sewage, in the hope of reaching the effect of energy second use, reduces the production cost in the enterprise practical production process; 5. can online demonstration calculate heat and real-time confirmation equipment running status; 6. remaining Aided Design can realize utilization effect of the present invention better.
[description of drawings]
Below in conjunction with accompanying drawing the present invention is described further.
Fig. 1 is an apparatus and process schematic diagram of the present invention.
Among the figure: A. bridge-type valve, B. sewage pipe, 10, centrifugal filter or sewage jar, 11, sewage pump, 20. left particle type filter, the right particle type filter of 20a.; 21. left sewage inlet, the right sewage inlet of 21a., 22. left drainage mouths, the right drainage mouth of 22a., 23. pressure sensors; 24. upper left valve, valve under the 24a. left side, 25. upper right valves, 25a. bottom right valve, 24c, 24d. are respectively the top and bottom that two of bridge-type valve is organized valve side by side; 26. sewage collecting pool, 30. heat exchangers, 31. left sewage are imported and exported, and 32. right sewage are imported and exported 33. cooling water inlets; 34. the warm water outlet, 40. heat accumulative meters, 41. cold water temperature sensors, 42. warm water heat detectors, 43. flowmeters.
[specific embodiment]
Below in conjunction with the Figure of description and the specific embodiment substantive distinguishing features of the present invention is further described.
The arrow indication flow direction promptly is the water (flow) direction of whole system among Fig. 1; After high temperature sewage at first passes through centralized collection; Get into filter, filter is the left particle type filter 20 and right particle type filter 20a of two specification types of the same race arranged side by side, and its whole cylindrical shell is cylindrical shape; The filter top is provided with left sewage inlet 21 and right sewage inlet 21a, and the below is provided with left drainage outlet 22 and right drainage outlet 22a; The sewage inlet top of two filters is provided with a bridge-type valve A; Described bridge-type valve comprises two groups of group valves arranged side by side; Every row group valve comprises the single valve of two series connection; They are respectively upper left valve 24, a left side valve 24a, upper right valve 25, bottom right valve 25a down, and described left sewage inlet 21 and right sewage inlet 21a are connected to the series connection single valve middle-end of the corresponding group of bridge-type valve A valve through pipeline; The bridge-type valve two upper end 24c of group valve side by side is connected with sewage pipe B, and lower end 24d has drainpipe; Left side drainage outlet 22 is imported and exported 32 through the left sewage import and export 31 of pipeline and heat exchanger with right sewage respectively with right drainage outlet 22a and is connected, and two-way import and export show the sewage import that both can be used as a kind of flow direction, also can be used as the outlet of sewer of reverse direction flow; Described heat-exchange device also is provided with cooling water inlet 33 and warm water outlet 34.Sewage is got into by the left sewage inlet 21 of left particle type filter 20 tops earlier; Impurity in the sewage is trapped in its surface by spherical steel ball filtrate; Water is through the bottom of the space inflow filter between filtrate, by the left drainage outlet 22 entering heat exchangers 30 of left particle type filter 20 belows.When left particle type filter 20 is moved; Right particle type filter 20a carries out backwash; This moment under the effect of the electrical control gear that is connected with pressure sensor 23, upper left valve 24, bottom right valve 25a in opened condition, left side valve 24a, upper right valve 25 down is closed condition.The left sewage import and export 31 that the hot sewage that flows out from left drainage outlet 22 gets into heat exchanger 30, the sewage that is flowed out by the right sewage import and export 32 of heat exchanger 30 carries out backwash through right drainage outlet 22a to right particle type filter 20a.Accordingly, when right particle type filter 20a operation, left particle type filter 20 is carried out backwash, this moment a left side down valve 24a, upper right valve 25 in opened condition, upper left valve 24, bottom right valve 25a are closed condition.The right sewage import and export 32 that the hot sewage that flows out from right drainage outlet 22a gets into heat exchanger 30, the sewage that is flowed out by the left sewage import and export 31 of heat exchanger 30 carries out backwash through 22 pairs of left particle type filter 20 of left drainage mouth.Foreign material after the backwash and sewage enter sewage collecting pool 26 or enter the external world.
When practical operation; A preset value need be set in electrical control gear; Pressure sensor transfers to electrical control gear with the pressure signal that collects; Behind the signal value and preset value that electrical control gear relatively receives, send the signal of control respective sets valve automatically and carry out filtration and backwash respectively, and realize the automatic switchover of filter process and backwash process.Also can use differential pressure controller, flowmeter for pressure sensor, its effect is similar.
The filtering material of particle type filter is a spheroidal stainless steel steel ball; Because steel ball is when being staggered; Leave the space, sewage passes through from the space, in addition; With the diameter setting of steel ball single aperture, do not run into " leaking material " and phenomenons such as " run and expect " in then can not occurring filtering greater than the filter opening of the filter of bottom support.Filter effect is better, also is difficult for during backwash being flushed away.
Heat exchanger in order to the hot and cold water heat exchange is the template heat exchanger; The template heat exchanger is an existing equipment, is made up of one group of metallic plate usually, and the part that metallic plate forms fluid line has hole, four angles; In order to have telltale hole on the metallic plate that changes direction of flow; The complex root metallic plate is in parallel installed with between a fixed head and a movable pressure plate, and clamps with fishbolt, and periphery of angled hole is equipped with seal washer.Metallic plate and movable pressure plate top have upper groove; One top guide bar has and the corresponding protruding button of groove; Metallic plate and movable pressure plate are suspended on the top guide bar through groove and protruding button; Metallic plate and movable pressure plate bottom portion have and the corresponding low groove of a lower guide rod, and top guide bar and lower guide rod are fixed on the support column.Have sewage in the bottom of fixed head and movable pressure plate and import and export, have the outlet of cooling water inlet and warm water on the top of fixed head and movable pressure plate, sewage is through after filtering; Wherein the impurity of the overwhelming majority all is eliminated; Water quality is cleaner, and sewage generally derives from sanitary sewage, compares with trade effluent; Viscosity is low; Good fluidity can not result in blockage and be detained even in thinner pipeline, flow perhaps to flow at metal sheet surface, and therefore being well suited for this kind heat exchanger carries out heat exchange.The metallic plate of heat exchanger is a corrugated plating, can make current form turbulent flow, and the flow velocity that slows down prolongs heat exchanger time, improves heat exchange efficiency, is up to 85%-98%.
Be provided with left and right sewage at heat exchanger 30 and import and export 31 and 32; Be provided with cooling water inlet 33 and warm water outlet 34; Cooling water inlet is higher than the warm water outlet of opposite side and not at homonymy; Heat exchanger 30 left and right sewage import and export 31,32 are connected respectively with left and right sides drainage outlet 22, the 22a of left and right sides particle type filter 20,20a, through heat exchanging process, with the heat energy in the sewage cold water are heated up.Sewage after filtering gets into the left sewage of heat exchanger 30 and imports and exports 31; The cold water that need heat up simultaneously is delivered to the cooling water inlet 33 of heat exchanger 30, and filtration sewage and the clean cold water introduced respectively by left sewage import and export 31 and cooling water inlet 33 are implemented in the heat exchange in the heat exchanger 30, and the heat energy in the sewage transmits transfer indirectly through metallic plate heat and gives cold water; And because be provided with filter before the heat exchange; So the particulate matter in the sewage is effectively removed, and can not enter into the inside of heat exchanger 30 again along with current, block its inner tiny pipeline; Influence the operation of heat exchanger, wearing and tearing heat exchanger and heat exchange performance is reduced.
During practical operation, can also be at preposition centrifugal filter of particle type filter or sewage jar, centrifugal filter or sewage jar are provided with elementary sewage inlet and elementary drainage mouth, and the bottom is provided with the waste residue outlet, and elementary drainage mouth is connected with sewage pipe.This situation is used in impurity and foreign matter is bigger, and suspension is many, has the sewage of greasy dirt, if grade one filter only is set, impurity and foreign matter filter insufficient, can remove impurity and greasy dirt better through centrifugal type filter.
Centrifugal type filter is conventional equipment for separating liquid from solid, is used for filtering proportion foreign matter and the greasy dirt bigger than water in the sewage; Pressure type was held back separating and filtering about particle type filter belonged to, and was used for holding back the suspended particulate matter in the sewage.Through behind the double-filtration, most impurity and foreign matter in the hot sewage have been filtered, and hot sewage can not make heat exchanger stop up, pollute and wearing and tearing after getting into heat-exchange device, thereby can make heat exchanger accomplish stable performance better, realizes normally operation.
The sewage jar is with mode initial gross separation sewage and impurity such as staticly settling, protecting follow-up unit to move better.Can also be as required at the rearmounted sewage pump of elementary drainage mouth.Be convenient to the sewage lifting is transported in the filter.
The cold water inlet place of heat exchanger 30 is provided with cold water temperature sensor 41 and flowmeter 43; Be provided with warm water heat detector 42 in the warm water exit; The flow of cold water and temperature and heat up after warm water temperature numerical value, all can be transferred to the device 40 of the affirmation saving of fuel amount of a side, it is a kind of accumulation calorimeter of automatic savings; Have functions such as online accumulative total demonstration, fully can real-time confirmation equipment running status and performance.The water yield value that the temperature gap of warm water heat detector 42 and cold water temperature sensor 41 multiply by flowmeter 43 is exactly the supply warm water calorie value that calculates, and calorie value can add up.Calculate and online demonstration through saving of fuel amount science, having solved at present can not online demonstration and the defective of cumulative calculation heat about the sewage heat reclamation device, has got rid of the doubt of plant effuent heat energy savings affirmation.Simultaneously, the present invention also can be equipped with remote-monitoring function, and the out temperature curve map of the running status of entire equipment, sewage and cold water, the warm water supply after the heat exchange are confirmed and heat is confirmed, can both print automatically through computer supervision and report.Automatically stop during equipment generation anomaly and report to the police, on monitor, show simultaneously unusual position takes place, promoted the technology content of sewage heat recovery equipment, make it intelligent more.

Claims (8)

1. sewerage heat energy recovery system; Comprise filter, pass through heat-exchange device (30), electrical control gear that pipeline is connected with filter; It is characterized in that described filter is two particle type filter arranged side by side (20,20a); Filter top is provided with sewage inlet (21,21a), and the below is provided with drainage outlet (22,22a); The sewage inlet top of two filters is provided with a bridge-type valve (A); Described bridge-type valve comprises two groups of group valves arranged side by side; Every group of group valve comprises the single valve (24,24a, 25,25a) of two series connection, and described sewage inlet (2l, 21a) is connected to the middle-end of the series connection single valve of the corresponding group of bridge-type valve (A) valve through pipeline; Bridge-type valve two upper end (24c) of group valve side by side is connected with sewage pipe (B), and lower end (24d) has drainpipe; Drainage outlet (22,22a) is connected with two two-way sewage import and export (31,32) of heat-exchange device through pipeline; Described heat-exchange device also is provided with cooling water inlet (33) and warm water outlet (34).
2. according to the described sewerage heat energy recovery system of claim 1, it is characterized in that being provided with on the described sewage pipe (B) pressure sensor (23); Described single valve (24,24a, 25,25a) is a pneumatic operated valve.
3. according to the described sewerage heat energy recovery system of claim 2, it is characterized in that said heat-exchange device is template heat exchanger (30), the cooling water inlet (33) that is positioned at heat exchanger one side is higher than the warm water outlet (34) of opposite side.
4. according to the described sewerage heat energy recovery system of claim 3; It is characterized in that described cooling water inlet (33) locates to be provided with a cold water temperature sensor (41) and a flowmeter (43); Described warm water outlet (34) locates to be provided with a warm water heat detector (42), and described cold water temperature sensor (41), warm water heat detector (42) and flowmeter (43) are connected with a heat accumulative meter (40) through lead respectively.
5. according to the described sewerage heat energy recovery system of claim 4, it is characterized in that being provided with in the said particle type filter filter plate of band filter opening, be filled with ball-shaped stainless steel steel ball on the filter plate, the diameter of steel ball is greater than the aperture of filter opening.
6. according to the described sewerage heat energy recovery system of claim 5; It is characterized in that preposition centrifugal filter of described particle type filter or sewage jar (10); Be provided with elementary sewage inlet and elementary drainage mouth at said centrifugal filter or sewage jar (10); The bottom is provided with the waste residue outlet, and elementary drainage mouth is connected with sewage pipe (B).
7. according to the described sewerage heat energy recovery system of claim 6, it is characterized in that the rearmounted sewage pump (11) of described elementary drainage mouth.
8. according to claim 1 or 6 described sewerage heat energy recovery systems, it is characterized in that described bridge-type valve two is connected with sewage collecting pool (26) in the lower end (24d) of group valve side by side.
CN2008100595242A 2008-01-24 2008-01-24 Sewerage heat energy recovery system Expired - Fee Related CN101493292B (en)

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CN102252560B (en) * 2010-05-20 2012-09-12 中国石油化工股份有限公司 On-line cleaning method for polyethylene pelletizing plate heat exchanger
CN101943507A (en) * 2010-09-17 2011-01-12 青岛科创新能源科技有限公司 Application method and system for sewage or earth surface water cold and heat sources
CN102679802A (en) * 2012-05-23 2012-09-19 何建明 Automatic reversing running heat exchange system
CN103256832B (en) * 2013-04-01 2015-02-18 天津大学 Sewage heat exchanger with scaling function and heat-exchange scaling method
CN104460632B (en) * 2014-12-18 2017-04-19 哈尔滨盛世康虹生物技术有限公司 Sewage treatment system adopting embedded control system

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CN201177469Y (en) * 2008-01-24 2009-01-07 仁新节能环保设备(上海)有限公司 Sewage water heat-energy recovering apparatus

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Publication number Priority date Publication date Assignee Title
CN2451211Y (en) * 2000-10-17 2001-10-03 新疆石河子汽车厂 Filter
CN1551856A (en) * 2001-09-05 2004-12-01 三菱丽阳株式会社 Water-clean cartridge, water-cleaner, and washing method of water-cleaner
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
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