CN203037089U - Non-scaling waste heat recovery system - Google Patents
Non-scaling waste heat recovery system Download PDFInfo
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- CN203037089U CN203037089U CN2013200191226U CN201320019122U CN203037089U CN 203037089 U CN203037089 U CN 203037089U CN 2013200191226 U CN2013200191226 U CN 2013200191226U CN 201320019122 U CN201320019122 U CN 201320019122U CN 203037089 U CN203037089 U CN 203037089U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model discloses a non-scaling waste heat recovery system which comprises an exhaust tube. The exhaust tube is communicated with an exhaust port of a gas thermal treatment furnace and provided with an exhaust fan and an electrically operated valve. An exhaust tube orifice of the exhaust tube is communicated with a chimney through a tube pass of a heat exchanger; an inlet and an outlet of a shell pass of the heat exchanger are communicated with a sealed water storage pool through air tubes respectively; a circulation fan is mounted on one of the air tubes; a plurality of mutually communicated independent water tanks are arranged on the upper portion of the sealed water storage pool, a plurality of spraying holes are opened at the bottom of each water tank, water inlet tubes are arranged above the water tanks and extend out of the sealed water storage pool in a sealing mode to be divided into two ways of tubes, one ways of tubes are communicated with a tap water tube network, the other ways of tubes are communicated with a water outlet of a spray water pump, and a water inlet of the spray water pump is communicated with the lower portion of the sealed water storage pool through a pie; and a water outlet pipe is arranged on the side wall of the sealed water storage pool. The non-scaling waste heat recovery system has the advantages that a secondary heat exchange process is performed in a spray state, so that scale is not produced.
Description
Technical field
The utility model relates to bootstrap system, especially relates to no fouling bootstrap system.
Background technology
At present, power is at hundreds of combustion gas heat-treatment furnaces that do not wait to several megawatts, because scale differs, its thermal efficiency is generally about 40%.The waste heat of this part combustion gas heat-treatment furnace is owing to comparatively disperse, and the waste heat amount is less relatively, is not suitable for cogeneration, and therefore, heat recovery is only selection on the spot.To this part waste heat, existing UTILIZATION OF VESIDUAL HEAT IN technology is generally taked heat transfer technology twice, that is: be for the first time to change high-temp waste gas into high temperature (70-120 ℃) softening hot water through gas/water-to-water heat exchanger; Be water/water heat exchange for the second time, the general using plate type heat exchanger becomes domestic water with the heat exchange of hot mastication hot water.But because domestic water generally is running water or even underground water, water quality is harder, and the domestic water temperature after the plate type heat exchanger heat exchange is about 60-70 ℃, this just in time is the temperature of easy fouling for this temperature province, cause the use of plate type heat exchanger just to be stopped up by incrustation scale less than one month, cleaning and descaling work is very difficult.
Summary of the invention
The utility model purpose is to provide a kind of cheap and no fouling bootstrap system that operating cost is low.
For achieving the above object, the utility model is taked following technical proposals:
No fouling bootstrap system described in the utility model comprises the smoke discharging pipe that is connected, is equipped with frequency conversion smoke exhaust fan and motor-driven valve with combustion gas heat-treatment furnace exhaust opening, and the smoke evacuation mouth of pipe of described smoke discharging pipe is communicated with chimney by the tube side of heat exchanger; The import and export of described heat exchanger shell pass is communicated with airtight cistern by air duct respectively; At described air duct circulating fan is installed; Described airtight cistern top is provided with a plurality of independently tanks that are interconnected that offer a plurality of spray apertures, be positioned at described tank top and be provided with water inlet pipe, described water inlet pipe seals to extend and is divided into the two-way pipeline outside the airtight cistern, one road pipeline is communicated with the running water pipe network by motor-driven valve, another road pipeline is communicated with the spray pump outlet, and described spray pump intake is communicated with airtight cistern bottom by pipeline; Airtight cistern sidewall is provided with outlet conduit.
The utility model advantage is that the secondary heat exchange process is to carry out under the spray state, so system does not produce incrustation scale.The utility model self energy consumption is low simultaneously, and economical operation is succinct, does not have expensive heat exchange of heat pipe, pressure pipeline and pressure vessel, and is safe and reliable, is fit to very much the metallurgy of various dispersions, the UTILIZATION OF VESIDUAL HEAT IN of casting industry combustion gas heat-treatment furnace.
Description of drawings
Fig. 1 is the structural representation of system described in the utility model.
Fig. 2 is the structural representation of airtight cistern described in the utility model (concealing top cover).
Fig. 3 is the structural representation of independent tank described in the utility model.
Fig. 4 is the structural representation of truss described in the utility model.
The specific embodiment
Shown in Fig. 1-4, no fouling bootstrap system described in the utility model, comprise the smoke discharging pipe 4 that is connected, is equipped with frequency conversion smoke exhaust fan 2 and motor-driven valve 3 with combustion gas heat-treatment furnace 1 exhaust opening, the smoke evacuation mouth of pipe of described smoke discharging pipe 4 is communicated with chimney 6 by the tube side of heat exchanger 5; The import and export of described heat exchanger 5 shell sides is communicated with airtight cistern 9 by air duct 7,8 respectively; At described air duct 7 circulating fan 10 is installed; Fixedly there are a plurality of independently tanks 11 on described airtight cistern 9 tops by truss 20, and to be arranged to independently tank 11 purposes be for the ease of transportation and install, and during use a plurality of independently tanks 11 being interconnected by the connecting hole 21 on pipeline and the sidewall gets final product; The bottom surface of each tank 11 offers a plurality of spray apertures, be positioned at tank 11 tops and be provided with water inlet pipe 12, described water inlet pipe 12 seals to extend outside the airtight cistern 9 and is divided into two-way pipeline 13,14, one road pipeline 13 is communicated with running water pipe network 16 by motor-driven valve 15, another road pipeline 14 is communicated with spray water pump 17 delivery ports, and described spray water pump 17 water inlets are communicated with airtight cistern 9 bottoms by pipeline 18; Airtight cistern 9 sidewalls are provided with outlet conduit 19.
The utility model operation principle is summarized as follows:
1, a heat exchange
Under 2 effects of frequency conversion smoke exhaust fan, the tube side of the heat exchanger of making through stainless steel 5 enters atmosphere from chimney 6 from about 350 ℃ of waste gas that combustion gas heat-treatment furnace 1 is discharged, and heat exchanger 5 forward and backward exhaust gas temperatures are 400/260 ℃; Therefore, the pure air in heat exchanger 5 shell sides is heated to about 200 ℃.Carry out VFC in frequency conversion smoke exhaust fan 2 courses of work, to stablize the gas extraction system of combustion gas heat-treatment furnace 1.Because a heat-exchange system does not have pressure duct, therefore do not need special security maintenance.
2, secondary heat exchange
200 ℃ of left and right sides hot-airs that a heat exchange obtains are communicated with airtight cistern 9 through air duct 7,8.Because air duct 7,8 is communicated with airtight cistern 9, the hot-air under circulating fan 10 effects in the air duct 7,8 contains steam, so air pipe line 7,8 all adopts stainless steel material.
Secondary heat exchange is to carry out between the hot-air of cleaning and water, in the heat exchange of airtight cistern 9 upper spaces spray.Under 17 effects of spray water pump, the water in the airtight cistern 9 is transported in the tank 11 by the automatic circulated sprinkling of spray apertures on the tank 11.Heating spray hot water when hot air cleaning is regional by spray can take away part steam yet and enter the pipeline circulation, but this part steam can not form incrustation scale.Steam is circulated again into airtight cistern 9 backs and meets cold meeting autocoagulation, and groove 11 flows down downstream.Spray water pump 17 adopts VFC to regulate water temperature.
The present invention has three kinds of mode of operations:
1, when airtight cistern 9 water levels were discontented, running water covered in the airtight cistern 9 (rather than running water directly covers in the cistern) after spraying heat exchange.
2, when airtight cistern 9 water levels when full (being higher than pond height 2/3), if water temperature this moment still not too high (being lower than 60 ℃) then sprays water pump 17 water that extract in the airtight cistern 9 that work on and heats.
3, the water in airtight cistern 9 is full, and water temperature surpasses 70 ℃, then closes circulating fan 10 and stops secondary heat exchange.
First kind of mode of operation has two kinds of schemes:
1, the outlet hot water temperature is preferential.The outlet hot water temperature is preferentially namely: be the running water direct heat transfer about 70 ℃ to temperature, supply is arrived in the airtight cistern 9.
2, absorb the heat maximum preferentially.Absorb the heat maximum preferentially namely: the valve of supply running water is reached maximum, to obtain maximum moisturizing speed and to absorb maximum heat (water temperature from the beginning that covers like this in the airtight cistern 9 is about 40 ℃).Because the more low heat exchange efficiency of water temperature is more high, it is more big to absorb heat, so it is preferentially comparatively economical and efficient to select to absorb the heat maximum, can satisfy the water use peak phase demand of (such as the bath water demand that every day, 4-5 was ordered).Moisturizing control has become open loop control like this, and system is simplified.
Second kind of mode of operation carried out heat exchange with maximum stream flow.
The fairly simple circulating fan 10 of directly cutting out of the third mode of operation gets final product.
Claims (1)
1. no fouling bootstrap system, comprise the smoke discharging pipe (4) that is connected, is equipped with frequency conversion smoke exhaust fan (2) and motor-driven valve (3) with combustion gas heat-treatment furnace (1) exhaust opening, the smoke evacuation mouth of pipe of described smoke discharging pipe (4) is communicated with chimney (6) by the tube side of heat exchanger (5); It is characterized in that: the import and export of described heat exchanger (5) shell side is communicated with airtight cistern (9) by air duct (7,8) respectively; At described air duct (7) circulating fan (10) is installed; Described airtight cistern (9) top is provided with a plurality of independently tanks (11) that are interconnected that offer a plurality of spray apertures, be positioned at described tank (11) top and be provided with water inlet pipe (12), described water inlet pipe (12) seals to extend outside the airtight cistern (9) and is divided into two-way pipeline (13,14), one road pipeline (13) is communicated with running water pipe network (16) by motor-driven valve (15), another road pipeline (14) is communicated with spray water pump (17) delivery port, and described spray water pump (17) water inlet is communicated with airtight cistern (9) bottom by pipeline (18); Airtight cistern (9) sidewall is provided with outlet conduit (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200191226U CN203037089U (en) | 2013-01-15 | 2013-01-15 | Non-scaling waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200191226U CN203037089U (en) | 2013-01-15 | 2013-01-15 | Non-scaling waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203037089U true CN203037089U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200191226U Expired - Lifetime CN203037089U (en) | 2013-01-15 | 2013-01-15 | Non-scaling waste heat recovery system |
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| Country | Link |
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| CN (1) | CN203037089U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017557A (en) * | 2013-01-15 | 2013-04-03 | 机械工业第六设计研究院有限公司 | Scaling-free waste heat utilization system |
-
2013
- 2013-01-15 CN CN2013200191226U patent/CN203037089U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017557A (en) * | 2013-01-15 | 2013-04-03 | 机械工业第六设计研究院有限公司 | Scaling-free waste heat utilization system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
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| CX01 | Expiry of patent term |