CN201373694Y - Combined secondary steam heat energy recovery device for heat pipe phase change heat exchanger of steam jet heat pump - Google Patents

Combined secondary steam heat energy recovery device for heat pipe phase change heat exchanger of steam jet heat pump Download PDF

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Publication number
CN201373694Y
CN201373694Y CN200920078807U CN200920078807U CN201373694Y CN 201373694 Y CN201373694 Y CN 201373694Y CN 200920078807 U CN200920078807 U CN 200920078807U CN 200920078807 U CN200920078807 U CN 200920078807U CN 201373694 Y CN201373694 Y CN 201373694Y
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China
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heat
steam
pipe
indirect
bobbin carriage
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CN200920078807U
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Chinese (zh)
Inventor
杨伟
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东方电机控制设备有限公司
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Abstract

The utility model discloses a combined secondary steam heat energy recovery device for a heat pipe phase change heat exchanger of a steam jet heat pump, which aims at solving the technical problems that the existing secondary steam heat energy either cannot be utilized, or has low utilization rate or can effectively utilize secondary steam but has narrow application range. The technical scheme adopted is that: the recovery device consists of a phase change heat exchanger, a vapor-water separator and a heat pump; the lower part of the heat pipe phase change heat exchanger is provided with a secondary steam condensation heat pipe tank and the upper part thereof is provided with a steam evaporation heat pipe tank as well as a water supply tank; the heat pipe tanks at the upper part and the lower part are closed and separated; the heat pump is a steam jet heat pump and the sucking end thereof is connected with a new steam discharge pipe of the vapor-water separator; and a mixed vapor outlet is connected with a heat supply steam pipe. The recovery device has the advantages of high heat energy utilization rate and wide application range.

Description

Steam jet heat pump heat pipe phase-change heat-exchanger combination indirect steam heat-energy recovering apparatus

Technical field

The utility model belongs to heat energy conversion and utilizes technical field, specifically relates to the heat energy recycle device of indirect steam.

Background technology

The generation of first and second steam:

In industries such as metallurgy, chemical industry, food, papermaking, weaving, pharmacy, daily use chemicals, desalinization, feed and environmental protection, in the production process with steam distill, concentrate, evaporation, boiling, drying, all to produce a large amount of indirect steams:

1, with steam to wet stock indirect dry run in, heating steam discharges heat of evaporation, conduction is heated material and condensation; Be heated material and absorb heat of evaporation, temperature rises, and when material temperature rise during to the boiling point of moisture content wherein, is heated material moisture content and absorbs a large amount of heat of evaporations, breaks away from material thereby be evaporated to indirect steam, and wet stock obtains drying.

2, with steam feed liquid (or solution) is being carried out in the indirect concentration and evaporation process, heating steam discharges heat of evaporation, and conduction is heated material (molten) liquid and condensation; Be heated material (molten) liquid and absorb the rising of heat of evaporation temperature, when material (molten) liquid temperature rise reaches the boiling point of moisture content wherein, be heated material (molten) liquid moisture content and absorb a large amount of heat of evaporations, be evaporated to the indirect steam that has a large amount of heat energy and break away from material (molten) liquid, make material (molten) liquid be able to evaporation and concentration.

3, with steam to many compositions part separated from solvent, carry out in direct (or indirectly) heating still-process, low boiling point solvent at first reaches boiling point, and absorb the heat of evaporation that a large amount of heating steams discharge, be evaporated to low boiling point solvent indirect steam high concentration, that have a large amount of heat energy, make the solvent component be able to separated.

Two, indirect steam heat energy recycle present situation

1, dry indirect steam utilizes present situation:

Because the indirect steam that dry run produces contains dust, the part indirect steam has corrosion and stench, and the indirect steam grade is lower, can't directly recycle, so prior art is done following processing to dry indirect steam:

A, indirect steam directly emptying after dedusting to not having corrosion and stench;

B, to after having the corrosion and the indirect steam of stench with cooling water condensation, condensate liquid decontamination water factory;

2, the concentration and evaporation indirect steam utilizes present situation:

The utilization of a, multiple-effect concentration evaporator indirect steam: the indirect steam that concentration and evaporation produces, stronger corrosivity is generally arranged, use after can not directly the indirect steam compression being improved temperature, pressure with the mechanical compression type heat pump, so adopt the multiple-effect concentration evaporator, with some evaporator series, except that first single-effect evaporator operates under the barotropic state, all the other evaporimeters all are in than the low negative pressure state of a last effect and move, 1st effective evaporator adopts heat supply network for steam, and the indirect steam of going up 1st effective evaporator is all adopted in all the other each single-effect evaporator heating; Influenced by the concentrate feed fluid viscosity, multi-effect evaporator generally is no more than 6 and imitates, and a unit heat supply network steam can evaporate and be no more than 5 unit moisture approximately basically;

B, mechanical compression type heat pump are to the recycling of indirect steam heat energy: if do not contain dust and corrosive gas in the indirect steam, can adopt the mechanical compression type heat pump directly to being back to the feed liquid evaporation after the indirect steam pressurization; This method secondary steam utilization is most effective, and 1 unit heat supply network steam can evaporate that to be not less than be the moisture of 100 units, the above moisture content of every KWH power consumption evaporation 22kg;

3, returning of distillation indirect steam utilized present situation:

A, the solvent indirect steam is reclaimed heat energy with soft water cooling; But, heat energy can not be made full use of because boiler is limited with soft water.

B, differential distillation utilize indirect steam heat energy: with two cover distilling apparatus series connection, and the first covering device operation under positive pressure, with Steam Heating that heat supply network is supplied, the solvent indirect steam of its generation is as the heating source of the second cover distilling apparatus; Because the indirect steam temperature of solvent is lower, so the second cover distilling apparatus must move under negative pressure and could reliably distill; The solvent indirect steam temperature that the second cover distilling apparatus produces is lower, and heat energy can not utilize again, but this device can make the distillation energy consumption reduce about 40%.

Three, in sum: the heat energy recycle of prior art indirect steam, maybe can not utilize, or the heat energy utilization rate is low, though or can efficiently utilize indirect steam heat energy, range of application is very little.And the technical products that the phase-change heat-exchange type secondary steam heat energy recycle method and apparatus that the utility model proposes is developed at general efficient utilization of indirect steam just.

The utility model content

Though the utility model maybe can not utilize at existing indirect steam heat energy or the heat energy utilization rate is low or can efficiently utilize indirect steam heat energy, but the present situation that range of application is very little, a kind of steam jet heat pump heat pipe phase-change heat-exchanger combination indirect steam heat-energy recovering apparatus is proposed, to overcome the problems referred to above that prior art exists.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:

Steam jet heat pump heat pipe phase-change heat-exchanger combination indirect steam heat-energy recovering apparatus is characterized in that: be made of phase-change heat-exchanger, steam-water separator, heat pump; Described heat pipe phase-change heat-exchanger bottom is an indirect steam condensing heat-exchange bobbin carriage, and top is steam raising heat exchange bobbin carriage, is supply tank simultaneously; Be connected with indirect steam air inlet pipe, indirect steam condensation wastewater drainage pipe on the indirect steam condensing heat-exchange bobbin carriage of bottom, noncondensing gas blast pipe; Top steam raising heat exchange bobbin carriage is connected with the initial steam tube connector; Be airtight partition between the upper and lower part heat exchange bobbin carriage, the heat pipe bundle in the indirect steam condensing heat-exchange bobbin carriage of bottom passes to cut off and stretches into top steam raising heat exchange bobbin carriage; Described steam-water separator is that drum is connected with the initial steam tube connector of steam raising heat exchange bobbin carriage, the initial steam blast pipe is set on it, and be connected with supply tank through down-comer, described heat pump is a steam jet heat pump, its suction side is connected with the initial steam blast pipe of steam-water separator, mixes the outlet side and connects the heating steam pipeline.

Adopt the saturated condensed water of drying machine, distiller or inspissator to be used for evaporation as phase-change heat-exchanger, steam-water separator can doublely be made the elevated tank of water supply.

The beneficial effects of the utility model show:

One, is applied to drying for phase-change heat-exchange type secondary steam heat energy recycle device

The processing mode of existing dry indirect steam all can not reclaim the dry indirect steam that produces, and has wasted a large amount of heat energy, and has caused environmental thermal pollution.After having adopted phase-change heat-exchange type secondary steam heat energy recycle device, avoid indirect steam to contain dust fully or corrosion has been arranged and stench and the problem that can't recycle has been saved a large amount of heat energy, reduced thermal pollution.

Two, be applied to concentrate for phase-change heat-exchange type secondary steam heat energy recycle device

The existing mechanical compression type heat pump that adopts is to concentrating the recycling of indirect steam heat energy, and because of not containing dust and corrosivity composition in the indirect steam, therefore, its scope of application is extremely limited.Adopt phase-change heat-exchange type secondary steam heat energy recycle device, avoided to contain the problem of dust and corrosivity composition in the indirect steam, thereby enlarged the scope of application of the highest concentrated mode of this indirect steam utilization ratio greatly.

Three, be applied to distillation for phase-change heat-exchange type secondary steam heat energy recycle device

Adopt phase-change heat-exchange type secondary steam heat energy recycle device, avoided differential distillation need use two problems of overlapping distilling apparatus, and the steam thermal energy utilization rate is higher; Simultaneously, solvent need not pass through the mechanical compression type heat pump again, needn't worry to be polluted, and has guaranteed quality; And the heat energy utilization of the initial steam that produces is convenient, can use the heat pump of various ways to utilize.

Four, adopt technical indicator of the present utility model:

A, steam jet heat pump: do not consume effective heat energy substantially;

B, indirect steam loss<10%;

C, vapour pressure can increase: 30 ~ 150Kpa;

Below by specific embodiment the utility model is further elaborated.

Description of drawings

Fig. 1 is the utility model structure principle chart

Fig. 2 is a heat pipe phase-change heat-exchanger structural representation among the utility model Fig. 1

Fig. 3 is applied to the schematic diagram of drying equipment for the utility model

Fig. 4 is applied to the schematic diagram of distillation equipment for the utility model

The specific embodiment

Embodiment 1: phase-change heat-exchange type secondary steam heat energy recycle device:

Phase-change heat-exchange type secondary steam heat energy recycle device is connected to form through pipeline by phase-change heat-exchanger, steam-water separator, steam jet heat pump (sees Fig. 1-Fig. 2);

1) heat pipe phase-change heat-exchanger

The heat pipe phase-change heat-exchanger is formed schematic diagram as shown in Figure 2 by bottom heat exchange bobbin carriage, top evaporation and heat-exchange bobbin carriage (being supply tank simultaneously), and indirect steam condensed water and fixed gas comb constitute; It mainly acts on identical with conventional phase-change heat-exchanger, and just heat exchange is to be undertaken by heat pipe, and in the heat exchange of heat pipe two ends, and heat exchange efficiency is higher; Simultaneously, steam-water separator also can be formed integral structure with top evaporation and heat-exchange bobbin carriage (supply tank), and like this, the volume and weight of whole heat-exchanger rig can reduce and alleviate;

2) steam-water separator: also claim drum, it mainly acts on is that upper collecting chamber is separated through the steam that the rising tube connector enters drum, moisture content is stayed in the drum liquid phase and through the decline tube connector and is delivered in the next part case for the evaporation use, adopt the saturated condensed water of drying machine, distiller or inspissator to be used for evaporation as phase-change heat-exchanger, drum can doublely be made the elevated tank of water supply;

3) steam jet heat pump (see figure 1), its effect has two: one, the steam that phase-change heat-exchanger produces is all extracted out, and boosted to spendable steam quality, heating network or with hot equipment use; The 2nd, must make the boiling point of water in the heat exchanger tube be lower than the indirect steam saturation temperature more than 5 ℃, thereby indirect steam phase inversion heat energy is normally carried out in the built-in upright certain negative pressure value that is lower than the indirect steam saturation pressure of phase inversion heat pipe;

4) operation principle

Take out at steam jet heat pump under the effect of negative pressure, steam-water separator, phase-change heat-exchanger upper end heat exchange bobbin carriage, steam-water separator tube connector all are in the subnormal ambient that is lower than the indirect steam saturation pressure; Evaporation water in the phase-change heat-exchanger upper end heat exchange evaporimeter, boiling point is brought down below the level of indirect steam saturation temperature more than 5 ℃; Continuously feed indirect steam at phase-change heat-exchanger lower end heat exchange bobbin carriage this moment, because the saturation temperature of indirect steam is higher than the boiling temperature of heat-pipe medium, indirect steam is condensed and discharges a large amount of evaporation latent heats, medium in the heat pipe is given in conduction, after medium temperature rises to boiling point in the heat pipe, absorb the heat of evaporation of a large amount of indirect steams and be evaporated to medium steam, rise to the heat pipe upper end, with condensation after the evaporation water heat exchange in the heat pipe case of upper end, get back to the circulation of heat pipe lower end; Evaporation water absorbs the heat of evaporation that the heat pipe upper end discharges in the heat pipe case of upper end, temperature is evaporated to water vapour after rising to boiling point, swabbing action by heat pump, this steam is through phase-change heat-exchange evaporimeter rising tube connector, after separating moisture content, steam-water separator enters heat pump, under the compression of heat pump, but become the clean steam heating network of using character or use with hot equipment.

Embodiment 2: phase-change heat-exchange type secondary steam heat energy recycle device is applied to drying equipment

Phase-change heat-exchange type secondary steam heat energy recycle device is applied to drying principles as shown in Figure 3: be phase-change heat-exchange type secondary steam heat energy recycle device among the figure in the frame of broken lines.

A heating steam is carried out indirect to wet stock, and a heating steam discharges heat of evaporation, and material is given in conduction and condensation is expelled to phase-change heat-exchange type secondary steam heat energy recycle device from drain valve; Wet stock absorbs heat of evaporation, when temperature rises to the boiling point of moisture content wherein, is evaporated to indirect steam and breaks away from material and enter phase-change heat-exchange type secondary steam heat energy recycle device, and the wet stock drying is a dry material.

After indirect steam and saturated condensed water enter phase-change heat-exchange type secondary steam heat energy recycle device, indirect steam is condensed into secondary wastewater and discharges, clean saturated condensed water is transformed to clean heating steam output, this steam can use for other thermal hardwares, or can be used as the use of primary steam supply drying machine self.

Embodiment 3: phase-change heat-exchange type secondary steam heat energy recycle device is applied to distillation equipment

Phase-change heat-exchange type secondary steam heat energy recycle device is applied to distill principle as shown in Figure 4, is phase-change heat-exchange type secondary steam heat energy recycle device in the frame of broken lines among the figure.

Primary steam heats in the still-process many compositions part solvent, low boiling point solvent at first reaches boiling point, and absorb the heat energy that a large amount of heating steams discharge, and be evaporated to low boiling point solvent indirect steam high concentration, that have a large amount of heat energy, make the solvent component be able to separated.

After solvent indirect steam and a condensed water enter phase-change heat-exchange type secondary steam heat energy recycle device, the solvent indirect steam is condensed into secondary solvent liquid and discharges, a clean condensed water is transformed to clean heating steam output, this steam is re-used as primary steam and supplies with distiller self use, only need the outer primary steam that supplies seldom, still-process is proceeded; Also can make heating steam uses for other thermal hardwares.

Claims (1)

1, steam jet heat pump heat pipe phase-change heat-exchanger combination indirect steam heat-energy recovering apparatus is characterized in that: be made of phase-change heat-exchanger, steam-water separator, heat pump; Described heat pipe phase-change heat-exchanger bottom is an indirect steam condensing heat-exchange bobbin carriage, and top is steam raising heat exchange bobbin carriage, is supply tank simultaneously; Be connected with indirect steam air inlet pipe, indirect steam condensation wastewater drainage pipe on the indirect steam condensing heat-exchange bobbin carriage of bottom, noncondensing gas blast pipe; Top steam raising heat exchange bobbin carriage is connected with the initial steam tube connector; Be airtight partition between the upper and lower part heat exchange bobbin carriage, the heat pipe bundle in the indirect steam condensing heat-exchange bobbin carriage of bottom passes to cut off and stretches into top steam raising heat exchange bobbin carriage; Described steam-water separator is that drum is connected with the initial steam tube connector of steam raising heat exchange bobbin carriage, the initial steam blast pipe is set on it, and be connected with supply tank through down-comer, described heat pump is a steam jet heat pump, its suction side is connected with the initial steam blast pipe of steam-water separator, mixes the outlet side and connects the heating steam pipeline.
CN200920078807U 2009-01-21 2009-01-21 Combined secondary steam heat energy recovery device for heat pipe phase change heat exchanger of steam jet heat pump CN201373694Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102012036A (en) * 2010-11-02 2011-04-13 杨本洛 Composite phase-transition heat exchanging device for warming clean gas fume and recovering exhaust heat after wet desulphurization
CN102175075A (en) * 2011-01-10 2011-09-07 刘志科 Heat of phase change efficient utilization device of water
CN102659196A (en) * 2012-05-28 2012-09-12 天津壹帆水务有限公司 Energy-saving evaporation process and system thereof
CN104132320A (en) * 2014-08-14 2014-11-05 渤海石油水电服务公司 Steam production system
CN105698556A (en) * 2016-02-18 2016-06-22 福建省利邦环境工程有限公司 Steam waste heat recoverer and steam waste heat recycling energy-saving device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102012036A (en) * 2010-11-02 2011-04-13 杨本洛 Composite phase-transition heat exchanging device for warming clean gas fume and recovering exhaust heat after wet desulphurization
CN102012036B (en) * 2010-11-02 2012-09-05 杨本洛 Composite phase-transition heat exchanging device for warming clean gas fume and recovering exhaust heat after wet desulphurization
CN102175075A (en) * 2011-01-10 2011-09-07 刘志科 Heat of phase change efficient utilization device of water
CN102175075B (en) * 2011-01-10 2013-10-02 刘志科 Heat of phase change efficient utilization device of water
CN102659196A (en) * 2012-05-28 2012-09-12 天津壹帆水务有限公司 Energy-saving evaporation process and system thereof
CN104132320A (en) * 2014-08-14 2014-11-05 渤海石油水电服务公司 Steam production system
CN105698556A (en) * 2016-02-18 2016-06-22 福建省利邦环境工程有限公司 Steam waste heat recoverer and steam waste heat recycling energy-saving device
CN105698556B (en) * 2016-02-18 2018-01-09 福建省利邦环境工程有限公司 Steam afterheat recoverer and its residual heat recovery energy-saving apparatus

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GR01 Patent grant
C14 Grant of patent or utility model
ASS Succession or assignment of patent right

Owner name: DONGFANG ELECTRIC GROUP DONGFANG MOTOR CO., LTD.

Free format text: FORMER OWNER: DFEM CONTROL EQUIPMENT CO., LTD.

Effective date: 20130614

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20130614

Address after: 618000 the Yellow River West Road, Sichuan, China, No. 188, No.

Patentee after: Dongfang Electric Group Dongfang Motor Co., Ltd.

Address before: 618000 the Yellow River West Road, Sichuan, China, No. 188, No.

Patentee before: DFEM Control Equipment Co., Ltd.

CX01 Expiry of patent term

Granted publication date: 20091230

CX01 Expiry of patent term