CN105240826A - Recovery system and method for low-temperature flue gas waste heat - Google Patents

Recovery system and method for low-temperature flue gas waste heat Download PDF

Info

Publication number
CN105240826A
CN105240826A CN201510784420.8A CN201510784420A CN105240826A CN 105240826 A CN105240826 A CN 105240826A CN 201510784420 A CN201510784420 A CN 201510784420A CN 105240826 A CN105240826 A CN 105240826A
Authority
CN
China
Prior art keywords
thermal
fluid reservoir
arrest tower
flue gas
low
Prior art date
Application number
CN201510784420.8A
Other languages
Chinese (zh)
Inventor
韩锋
彭妍
Original Assignee
江苏昌明环保科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏昌明环保科技有限公司 filed Critical 江苏昌明环保科技有限公司
Priority to CN201510784420.8A priority Critical patent/CN105240826A/en
Publication of CN105240826A publication Critical patent/CN105240826A/en

Links

Abstract

The invention discloses a recovery system for low-temperature flue gas waste heat. The recovery system comprises a heat collection tower, liquid storage tanks, a circulating liquid pump and a liquid heat exchanger. Low-temperature flue gas enters the heat collection tower, makes direct contact with liquid drops of middle fluid sprayed out from a spraying nozzle in the heat collection tower so as to exchange heat with the liquid drops and is discharged out of the heat collection tower after heat exchange, and the liquid drops accumulate on the bottom of the heat collection tower to form the middle fluid. The liquid storage tanks are connected with the heat collection tower, filtering media are arranged in the liquid storage tanks, the middle fluid on the bottom of the heat collection tower enters the liquid storage tanks, and dust particles in the middle fluid are removed by the filtering media. The circulating liquid pump is connected with the liquid storage tanks and the liquid heat exchanger and conveys the middle fluid on the bottom of the heat collection tower to the liquid heat exchanger through the liquid storage tanks. The liquid heat exchanger is connected with the circulating liquid pump and receives the middle fluid on the bottom of the heat collection tower, heat exchange between liquid is carried out in the liquid heat exchanger, and the middle fluid flows into the spraying nozzle of the heat collection tower through the liquid heat exchanger under the effect of a circulating liquid pump head.

Description

A kind of low-temperature flue gas waste heat recovery system and method

Technical field

The present invention relates to energy-conserving and emission-cutting technology field, particularly relate to a kind of low-temperature flue gas waste heat recovery system and method.

Background technology

The fields such as oil, chemical industry and life heating widely use Industrial Boiler, and the low-temperature flue gas of a large amount of 120 ~ 140 DEG C directly discharges.Only the taste of pipe low-temperature flue gas waste heat is lower, but its total amount is comparatively large, has good energy-saving potential.And along with the aggravation of environmental pollution and energy scarcity problem, country advocates energy-saving and emission-reduction energetically.Under this overall background, how each enterprise utilizes the low-temperature flue gas waste heat produced in production process is paid attention to further.

Existing low-temperature flue gas waste heat utilizes the following problem of technology ubiquity:

1. utilize obvious heat of smoke to cause heat recovery rate low.

2. cause blockage problem owing to ignoring flying dust contained in flue gas.

Therefore, need exploitation a kind of efficient, stable low-temperature flue gas waste heat recovery system and method badly, fundamentally solve that the rate of recovery is low, blocking, problem that reliability is low, and then improve the effective rate of utilization of the energy and the discharge of decreasing pollution thing.

Summary of the invention

The object of the present invention is to provide a kind of low-temperature flue gas waste heat recovery system and method to overcome the above-mentioned problems in the prior art.

For achieving the above object, the invention provides a kind of low-temperature flue gas waste heat recovery system to comprise: thermal-arrest tower, fluid reservoir, recycle liquid pump and liquid heat exchanger;

Thermal-arrest tower, low-temperature flue gas enters described thermal-arrest tower, and the drop of the central fluid sprayed with shower nozzle in described thermal-arrest tower directly contacts and carries out heat exchange, described low-temperature flue gas discharges described thermal-arrest tower after carrying out heat exchange, described drop is gathered in described thermal-arrest tower bottom and forms described central fluid;

Fluid reservoir, described fluid reservoir connects described thermal-arrest tower, arranges filter medium in described fluid reservoir, and the central fluid of described thermal-arrest tower bottom enters described fluid reservoir, and removes the dust granules in described central fluid by described filter medium;

Recycle liquid pump, described recycle liquid pump connects described fluid reservoir and liquid heat exchanger respectively, and the central fluid of described thermal-arrest tower bottom is pumped to described liquid heat exchanger by described fluid reservoir by described recycle liquid pump;

Liquid heat exchanger, described liquid heat exchanger connects described recycle liquid pump, for receiving the central fluid through the described thermal-arrest tower bottom filtered, and the heat exchange carried out in described liquid heat exchanger between liquid, described central fluid is flow to by described liquid heat exchanger in the shower nozzle of described thermal-arrest tower under the effect of described recycle liquid pump pressure head.

Preferably, comprise: demister in described thermal-arrest tower, described demister is arranged on the top of described thermal-arrest tower, for removing the drop carried out with the drop of described central fluid in the described low-temperature flue gas after heat exchange.

Preferably, also comprise in described thermal-arrest tower: multistage without overflow sieve plate, the described multistage below being arranged on shower nozzle in described thermal-arrest tower without overflow sieve plate, for improve heat exchange efficiency and described low-temperature flue gas by described multistage without uniform stream during overflow sieve plate, not easily block.

Preferably, the quantity of described fluid reservoir is two, described two fluid reservoirs are respectively the first fluid reservoir and the second fluid reservoir, described first fluid reservoir connects described thermal-arrest tower by the second valve and connects described recycle liquid pump by the 4th valve, and described second fluid reservoir connects described thermal-arrest tower by the first valve and connects described recycle liquid pump by the 3rd valve, for changing the described filter medium in clean described fluid reservoir.

Preferably, described thermal-arrest tower also comprises: inlet and liquid outlet, described inlet and liquid outlet are separately positioned on the bottom of described thermal-arrest tower, described inlet is arranged on the top of described liquid outlet, the replenisher of described central fluid enters the bottom of described thermal-arrest tower by described inlet, the exudate of described central fluid flows out described thermal-arrest tower by described liquid outlet.

A kind of low-temperature flue gas waste heat recovery method comprises the following steps:

(1) low-temperature flue gas utilizes air-introduced machine overbottom pressure to enter thermal-arrest tower, central fluid flows downward after shower nozzle spray is dispersed into droplet, direct contact heat transfer is carried out with described low-temperature flue gas, sensible heat in described low-temperature flue gas and latent heat reach described central fluid, described low-temperature flue gas discharges remove described droplet by the demister on described thermal-arrest tower top after abundant heat release after, and is gathered in the bottom of described thermal-arrest tower by the described central fluid after heating;

(2) be introduced in the first fluid reservoir and the second fluid reservoir by the described central fluid after heating respectively by circulating pump, remove by the dust granules in the described central fluid after heating through the filter medium in described first fluid reservoir and the second fluid reservoir;

(3) the described central fluid removing dust granules enters liquid heat exchanger after circulating pump supercharging, carries out the heat exchange between described central fluid and boiler feedwater liquid, described boiler feed temperature is raised in described liquid heat exchanger;

(4) the described central fluid after step (3) heat release utilizes circulation pump head to flow to the shower nozzle on described thermal-arrest tower top, continues to carry out heat exchange with the described low-temperature flue gas utilizing air-introduced machine overbottom pressure to enter thermal-arrest tower, so moves in circles.

Preferably, described step 1 also comprises: described thermal-arrest tower bottom is provided with pH value measurement mechanism, and the bottom of described thermal-arrest tower arranges inlet and liquid outlet respectively, the SOx in described low-temperature flue gas is constantly absorbed due to the described central fluid being gathered in described thermal-arrest tower bottom, the sour gas such as NOx, the acidity of described central fluid strengthens gradually, for avoiding the corrosion to equipment and pipeline in low-temperature flue gas waste heat recovery system, when described pH value measurement mechanism measurement pH value reaches certain value, open the Valved discharge acidic liquid connecting described liquid outlet, open the valve connecting described inlet simultaneously and supplement described central fluid.

Preferably, described step 2 also comprises: by controlling the first valve (12), second valve (13), switching between 3rd valve (14) and the 4th valve (15), realize the object of rinsing the filter medium changing described fluid reservoir, dust granules in the filter medium of described two fluid reservoirs can affect the flowing of described central fluid when reaching finite concentration, for ensureing the continuous operation of equipment, when needing to rinse the filter medium in replacing first fluid reservoir (2), open the first valve (12) and the 3rd valve (14) and close the second valve (13) and the 4th valve (15), described central fluid flows into the second fluid reservoir (5), described first fluid reservoir (2) is stopped transport, can dismantle and rinse the filter medium in described first fluid reservoir (2), when needing to rinse the filter medium in replacing second fluid reservoir (5), open the second valve (13) and the 4th valve (15), close the first valve (12) and the 3rd valve (14), described central fluid flows into the first fluid reservoir (2), described second fluid reservoir (5) is stopped transport, and can dismantle and rinse the filter medium in described second fluid reservoir (5).

The invention provides a kind of low-temperature flue gas waste heat recovery system and method, exhaust gas temperature can be down to 60 DEG C from 120 DEG C ~ 140 DEG C by low-temperature flue gas waste heat recovery system of the present invention and method, boiler efficiency can improve about 3%, save that fuel fundamentally solves that the rate of recovery is low, blocking and the low problem of reliability, and then improve the effective rate of utilization of the energy and decrease the discharge of pollutant.

Accompanying drawing explanation

Fig. 1 is the structural representation based on low-temperature flue gas waste heat recovery system.

Detailed description of the invention

For making object of the invention process, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.

In describing the invention; it will be appreciated that; term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limiting the scope of the invention.

In the present invention one broad embodiment: the invention provides a kind of low-temperature flue gas waste heat recovery system, comprising: thermal-arrest tower, fluid reservoir, recycle liquid pump and liquid heat exchanger; Low-temperature flue gas enters described thermal-arrest tower, and the drop of the central fluid sprayed with shower nozzle in described thermal-arrest tower directly contacts and carries out heat exchange, described low-temperature flue gas discharges described thermal-arrest tower after carrying out heat exchange, described drop is gathered in described thermal-arrest tower bottom and forms described central fluid; Described fluid reservoir connects described thermal-arrest tower, arranges filter medium in described fluid reservoir, and the central fluid of described thermal-arrest tower bottom enters described fluid reservoir, and removes the dust granules in described central fluid by described filter medium; Described recycle liquid pump connects described fluid reservoir and liquid heat exchanger respectively, and the central fluid of described thermal-arrest tower bottom is pumped to described liquid heat exchanger by described fluid reservoir by described recycle liquid pump; Described liquid heat exchanger connects described recycle liquid pump, for receiving the central fluid through the described thermal-arrest tower bottom filtered, and the heat exchange carried out in described liquid heat exchanger between liquid, described central fluid is flow to by described liquid heat exchanger in the shower nozzle of described thermal-arrest tower under the effect of described recycle liquid pump pressure head.

In another broad embodiment of the present invention: the invention provides a kind of low-temperature flue gas waste heat recovery method and comprise the following steps:

(1) low-temperature flue gas utilizes air-introduced machine overbottom pressure to enter thermal-arrest tower, central fluid flows downward after shower nozzle spray is dispersed into droplet, direct contact heat transfer is carried out with described low-temperature flue gas, sensible heat in described low-temperature flue gas and latent heat reach described central fluid, described low-temperature flue gas discharges remove described droplet by the demister on described thermal-arrest tower top after abundant heat release after, and is gathered in the bottom of described thermal-arrest tower by the described central fluid after heating;

(2) be introduced in the first fluid reservoir and the second fluid reservoir by the described central fluid after heating respectively by circulating pump, remove by the dust granules in the described central fluid after heating through the filter medium in described first fluid reservoir and the second fluid reservoir;

(3) the described central fluid removing dust granules enters liquid heat exchanger after circulating pump supercharging, carries out the heat exchange between described central fluid and boiler feedwater liquid, described boiler feed temperature is raised in described liquid heat exchanger;

(4) the described central fluid after step (3) heat release utilizes circulation pump head to flow to the shower nozzle on described thermal-arrest tower top, continues to carry out heat exchange with the described low-temperature flue gas utilizing air-introduced machine overbottom pressure to enter thermal-arrest tower, so moves in circles.

As shown in Figure 1, described low-temperature flue gas waste heat recovery system comprises: thermal-arrest tower 1, first fluid reservoir 2, second fluid reservoir 5, recycle liquid pump 3, liquid heat exchanger 4, filter medium 6, corrugated plating demister 7, shower nozzle 8, porous sieve plate 9, inlet 10, liquid outlet 11, first valve 12, second valve 13, the 3rd valve 14, the 4th valve 15.

Low-temperature flue gas enters described thermal-arrest 1 tower, and the drop of the central fluid sprayed with shower nozzle in described thermal-arrest tower 1 directly contacts and carries out heat exchange, described low-temperature flue gas discharges described thermal-arrest tower 1 after carrying out heat exchange, described drop is gathered in bottom described thermal-arrest tower 1 and forms described central fluid, described first fluid reservoir 2 is connected described thermal-arrest tower 1 with the second fluid reservoir 5, in described first fluid reservoir 2 and the second fluid reservoir 5, filter medium 6 is set, central fluid bottom described thermal-arrest tower 1 enters described first fluid reservoir 2 and the second fluid reservoir 5, and is removed the dust granules in described central fluid by described filter medium 6, described recycle liquid pump 3 connects described first fluid reservoir 2 respectively, second fluid reservoir 5 and liquid heat exchanger 4, central fluid bottom described thermal-arrest tower 1 is delivered in described liquid heat exchanger 4 by described fluid reservoir pump 3 by described recycle liquid pump 3, described liquid heat exchanger 4 connects described recycle liquid pump 3, for receiving the central fluid bottom the described thermal-arrest tower 1 through filtering, and the heat exchange carried out in described liquid heat exchanger 4 between liquid, described central fluid is flow in the shower nozzle 8 of described thermal-arrest tower 1 by described liquid heat exchanger 4 under the effect of described recycle liquid pump 3 pressure head.

Comprise in described thermal-arrest tower 1: corrugated plating demister 7, described corrugated plating demister 7 is arranged on the top of described thermal-arrest tower 1, for removing the drop carried out with the drop of described central fluid in the described low-temperature flue gas after heat exchange, guarantee that fume emission water content is lower than 75mg/m 3.

Described porous sieve plate 9 is arranged on the below of shower nozzle 8 in described thermal-arrest tower 1, for ensureing the fully heat release of flue gas energy, sensible heat and latent heat, improve heat exchange efficiency, arrange in thermal-arrest tower 1 that porous sieve plate 9 is with the prolong smoke time of staying and increase gas liquid interfacial area, described low-temperature flue gas, by uniform stream during described porous sieve plate 9, not easily blocks.

Described first fluid reservoir 2 connects described thermal-arrest tower 1 by the second valve 13 and connects described recycle liquid pump 3 by the 4th valve 15, and described second fluid reservoir 5 connects described thermal-arrest tower 1 by the first valve 12 and connects described recycle liquid pump 3 by the 3rd valve 14, for changing the filter medium 6 arranged in clean described first fluid reservoir 2 and the second fluid reservoir 5.

Described inlet 10 and liquid outlet 11 are separately positioned on the bottom of described thermal-arrest tower 1, described inlet 10 is arranged on the top of described liquid outlet 11, the replenisher of described central fluid enters the bottom of described thermal-arrest tower 1 by described inlet 10, the exudate of described central fluid flows out described thermal-arrest tower 1 by described liquid outlet 11.

A kind of low-temperature flue gas waste heat recovery method comprises the following steps:

(1) temperature is that the low-temperature flue gas of 120 DEG C ~ 140 DEG C utilizes air-introduced machine overbottom pressure to enter thermal-arrest tower 1, central fluid flows downward after shower nozzle 8 spray is dispersed into droplet, direct contact heat transfer is carried out with described low-temperature flue gas, sensible heat in described low-temperature flue gas and latent heat reach described central fluid, described low-temperature flue gas discharges remove described droplet by the corrugated plating demister 7 on described thermal-arrest tower 1 top after abundant heat release after, and the described central fluid being heated to 60 DEG C ~ 70 DEG C is gathered in the bottom of described thermal-arrest tower 1;

(2) be introduced in the first fluid reservoir 2 and the second fluid reservoir 5 by the described central fluid after heating respectively by circulating pump 3, remove by the dust granules in the described central fluid after heating through the filter medium 6 in described first fluid reservoir 2 and the second fluid reservoir 5;

(3) the described central fluid removing dust granules enters liquid heat exchanger 4 after circulating pump 3 supercharging, in described liquid heat exchanger 4, carry out the heat exchange between described central fluid and boiler feedwater liquid, make described boiler feed temperature raise 25 DEG C ~ 30 DEG C;

(4) the described central fluid after step (3) heat release utilizes the pressure head of circulating pump 3 to flow to the shower nozzle 8 on described thermal-arrest tower 1 top, continue to carry out heat exchange with the described low-temperature flue gas utilizing air-introduced machine overbottom pressure to enter thermal-arrest tower 1, so move in circles.

Described step 1 also comprises: be provided with pH value measurement mechanism bottom described thermal-arrest tower 1, and the bottom of described thermal-arrest tower 1 arranges inlet 10 and liquid outlet 11 respectively, because the described central fluid be gathered in bottom described thermal-arrest tower 1 constantly absorbs the SOx in described low-temperature flue gas, the sour gas such as NOx, the acidity of described central fluid strengthens gradually, for avoiding the corrosion to equipment and pipeline in low-temperature flue gas waste heat recovery system, when described pH value measurement mechanism measurement pH value reaches certain value, open the Valved discharge acidic liquid connecting described liquid outlet 11, open the valve connecting described inlet 10 simultaneously and supplement described central fluid.

Described step 2 also comprises: by controlling the first valve 12, second valve 13, switching between 3rd valve 14 and the 4th valve 15, realize the object of rinsing the filter medium changing described fluid reservoir, dust granules in the filter medium of described two fluid reservoirs can affect the flowing of described central fluid when reaching finite concentration, for ensureing the continuous operation of equipment, when needing to rinse the filter medium in replacing first fluid reservoir 2, open the first valve 12 and the 3rd valve 14 and close the second valve 13 and the 4th valve 15, described central fluid flows into the second fluid reservoir 5, described first fluid reservoir 2 is stopped transport, can dismantle and rinse the filter medium in described first fluid reservoir 2, when needing to rinse the filter medium in replacing second fluid reservoir 5, open the second valve 13 and the 4th valve 15, close the first valve 12 and the 3rd valve 14, described central fluid flows into the first fluid reservoir 2, described second fluid reservoir 5 is stopped transport, and can dismantle and rinse the filter medium in described second fluid reservoir 5

Finally it is to be noted: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit.Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (8)

1. a low-temperature flue gas waste heat recovery system, is characterized in that, comprising: thermal-arrest tower, fluid reservoir, recycle liquid pump and liquid heat exchanger;
Thermal-arrest tower, low-temperature flue gas enters described thermal-arrest tower, and the drop of the central fluid sprayed with shower nozzle in described thermal-arrest tower directly contacts and carries out heat exchange, described low-temperature flue gas discharges described thermal-arrest tower after carrying out heat exchange, described drop is gathered in described thermal-arrest tower bottom and forms described central fluid;
Fluid reservoir, described fluid reservoir connects described thermal-arrest tower, arranges filter medium in described fluid reservoir, and the central fluid of described thermal-arrest tower bottom enters described fluid reservoir, and removes the dust granules in described central fluid by described filter medium;
Recycle liquid pump, described recycle liquid pump connects described fluid reservoir and liquid heat exchanger respectively, and the central fluid of described thermal-arrest tower bottom is pumped to described liquid heat exchanger by described fluid reservoir by described recycle liquid pump;
Liquid heat exchanger, described liquid heat exchanger connects described recycle liquid pump, for receiving the central fluid through the described thermal-arrest tower bottom filtered, and the heat exchange carried out in described liquid heat exchanger between liquid, described central fluid is flow to by described liquid heat exchanger in the shower nozzle of described thermal-arrest tower under the effect of described recycle liquid pump pressure head.
2. low-temperature flue gas waste heat recovery system as claimed in claim 1, it is characterized in that: comprise in described thermal-arrest tower: demister, described demister is arranged on the top of described thermal-arrest tower, for removing the drop carried out with the drop of described central fluid in the described low-temperature flue gas after heat exchange.
3. low-temperature flue gas waste heat recovery system as claimed in claim 2, it is characterized in that: also comprise in described thermal-arrest tower: multistage without overflow sieve plate, the described multistage below being arranged on shower nozzle in described thermal-arrest tower without overflow sieve plate, for improve heat exchange efficiency and described low-temperature flue gas by described multistage without uniform stream during overflow sieve plate, not easily block.
4. low-temperature flue gas waste heat recovery system as claimed in claim 1, it is characterized in that: the quantity of described fluid reservoir is two, described two fluid reservoirs are respectively the first fluid reservoir and the second fluid reservoir, described first fluid reservoir connects described thermal-arrest tower by the second valve and connects described recycle liquid pump by the 4th valve, and described second fluid reservoir connects described thermal-arrest tower by the first valve and connects described recycle liquid pump by the 3rd valve, for changing the described filter medium in clean described fluid reservoir.
5. low-temperature flue gas waste heat recovery system as claimed in claim 1, it is characterized in that: described thermal-arrest tower also comprises: inlet and liquid outlet, described inlet and liquid outlet are separately positioned on the bottom of described thermal-arrest tower, described inlet is arranged on the top of described liquid outlet, the replenisher of described central fluid enters the bottom of described thermal-arrest tower by described inlet, the exudate of described central fluid flows out described thermal-arrest tower by described liquid outlet.
6. a low-temperature flue gas waste heat recovery method, is characterized in that, comprises the following steps:
(1) low-temperature flue gas utilizes air-introduced machine overbottom pressure to enter thermal-arrest tower, central fluid flows downward after shower nozzle spray is dispersed into droplet, direct contact heat transfer is carried out with described low-temperature flue gas, sensible heat in described low-temperature flue gas and latent heat reach described central fluid, described low-temperature flue gas discharges remove described droplet by the demister on described thermal-arrest tower top after abundant heat release after, and is gathered in the bottom of described thermal-arrest tower by the described central fluid after heating;
(2) be introduced in the first fluid reservoir and the second fluid reservoir by the described central fluid after heating respectively by circulating pump, remove by the dust granules in the described central fluid after heating through the filter medium in described first fluid reservoir and the second fluid reservoir;
(3) the described central fluid removing dust granules enters liquid heat exchanger after circulating pump supercharging, carries out the heat exchange between described central fluid and boiler feedwater liquid, described boiler feed temperature is raised in described liquid heat exchanger;
(4) the described central fluid after step (3) heat release utilizes circulation pump head to flow to the shower nozzle on described thermal-arrest tower top, continues to carry out heat exchange with the described low-temperature flue gas utilizing air-introduced machine overbottom pressure to enter thermal-arrest tower, so moves in circles.
7. low-temperature flue gas waste heat recovery method as claimed in claim 6, it is characterized in that, described step 1 also comprises: described thermal-arrest tower bottom is provided with pH value measurement mechanism, and the bottom of described thermal-arrest tower arranges inlet and liquid outlet respectively, the SOx in described low-temperature flue gas is constantly absorbed due to the described central fluid being gathered in described thermal-arrest tower bottom, the sour gas such as NOx, the acidity of described central fluid strengthens gradually, for avoiding the corrosion to equipment and pipeline in low-temperature flue gas waste heat recovery system, when described pH value measurement mechanism measurement pH value reaches certain value, open the Valved discharge acidic liquid connecting described liquid outlet, open the valve connecting described inlet simultaneously and supplement described central fluid.
8. low-temperature flue gas waste heat recovery method as claimed in claim 6, it is characterized in that, described step 2 also comprises: by controlling the first valve (12), second valve (13), switching between 3rd valve (14) and the 4th valve (15), realize the object of rinsing the filter medium changing described fluid reservoir, dust granules in the filter medium of described two fluid reservoirs can affect the flowing of described central fluid when reaching finite concentration, for ensureing the continuous operation of equipment, when needing to rinse the filter medium in replacing first fluid reservoir (2), open the first valve (12) and the 3rd valve (14) and close the second valve (13) and the 4th valve (15), described central fluid flows into the second fluid reservoir (5), described first fluid reservoir (2) is stopped transport, can dismantle and rinse the filter medium in described first fluid reservoir (2), when needing to rinse the filter medium in replacing second fluid reservoir (5), open the second valve (13) and the 4th valve (15), close the first valve (12) and the 3rd valve (14), described central fluid flows into the first fluid reservoir (2), described second fluid reservoir (5) is stopped transport, and can dismantle and rinse the filter medium in described second fluid reservoir (5).
CN201510784420.8A 2015-11-16 2015-11-16 Recovery system and method for low-temperature flue gas waste heat CN105240826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510784420.8A CN105240826A (en) 2015-11-16 2015-11-16 Recovery system and method for low-temperature flue gas waste heat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510784420.8A CN105240826A (en) 2015-11-16 2015-11-16 Recovery system and method for low-temperature flue gas waste heat

Publications (1)

Publication Number Publication Date
CN105240826A true CN105240826A (en) 2016-01-13

Family

ID=55038579

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510784420.8A CN105240826A (en) 2015-11-16 2015-11-16 Recovery system and method for low-temperature flue gas waste heat

Country Status (1)

Country Link
CN (1) CN105240826A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105862053A (en) * 2016-04-06 2016-08-17 中冶南方工程技术有限公司 Regeneration method and system for hydrochloric acid waste liquid
CN105879580A (en) * 2016-04-06 2016-08-24 中冶南方工程技术有限公司 Method and system for regenerating hydrochloric acid waste liquid
CN105887108A (en) * 2016-04-06 2016-08-24 中冶南方工程技术有限公司 Hydrochloric acid waste liquid regenerating method and system
CN106051736A (en) * 2016-07-19 2016-10-26 北京华林联合热能技术有限公司 Condensed steam boiler
CN106051704A (en) * 2016-06-24 2016-10-26 中冶南方工程技术有限公司 System for recovering high temperature coal gas waste heat with molten salt

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1803259A (en) * 2005-12-07 2006-07-19 马春强 Flume gas desulfuration method and composite circulated convection absorbing tower
CN101862583A (en) * 2009-09-27 2010-10-20 北京九州美电环保工程有限公司 Flue gas desulfurization process suitable for sintering machine of steel mill
CN201728054U (en) * 2010-07-06 2011-02-02 同方环境股份有限公司 Device for alkali-based desulfurization of exhausted smoke on ship
JP2012239958A (en) * 2011-05-17 2012-12-10 Babcock Hitachi Kk Wet type flue gas desulfurizing apparatus and method
US20130136679A1 (en) * 2010-05-31 2013-05-30 Mitsubishi Heavy Industries, Ltd. Air pollution control system and method
CN103272471A (en) * 2013-04-27 2013-09-04 高翀 Desulfuration system and desulfuration technology therefor
CN102087021B (en) * 2010-12-20 2014-04-09 华北电力大学 Integrated system for utilizing residual heat of boiler smoke and removing sulfur
CN205299476U (en) * 2015-11-16 2016-06-08 江苏昌明环保科技有限公司 Low temperature waste heat from flue gas recovery system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1803259A (en) * 2005-12-07 2006-07-19 马春强 Flume gas desulfuration method and composite circulated convection absorbing tower
CN101862583A (en) * 2009-09-27 2010-10-20 北京九州美电环保工程有限公司 Flue gas desulfurization process suitable for sintering machine of steel mill
US20130136679A1 (en) * 2010-05-31 2013-05-30 Mitsubishi Heavy Industries, Ltd. Air pollution control system and method
CN201728054U (en) * 2010-07-06 2011-02-02 同方环境股份有限公司 Device for alkali-based desulfurization of exhausted smoke on ship
CN102087021B (en) * 2010-12-20 2014-04-09 华北电力大学 Integrated system for utilizing residual heat of boiler smoke and removing sulfur
JP2012239958A (en) * 2011-05-17 2012-12-10 Babcock Hitachi Kk Wet type flue gas desulfurizing apparatus and method
CN103272471A (en) * 2013-04-27 2013-09-04 高翀 Desulfuration system and desulfuration technology therefor
CN205299476U (en) * 2015-11-16 2016-06-08 江苏昌明环保科技有限公司 Low temperature waste heat from flue gas recovery system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105862053A (en) * 2016-04-06 2016-08-17 中冶南方工程技术有限公司 Regeneration method and system for hydrochloric acid waste liquid
CN105879580A (en) * 2016-04-06 2016-08-24 中冶南方工程技术有限公司 Method and system for regenerating hydrochloric acid waste liquid
CN105887108A (en) * 2016-04-06 2016-08-24 中冶南方工程技术有限公司 Hydrochloric acid waste liquid regenerating method and system
CN105887108B (en) * 2016-04-06 2018-12-07 中冶南方工程技术有限公司 Hydrochloric acid exhausted liquid reclaiming process and system
CN106051704A (en) * 2016-06-24 2016-10-26 中冶南方工程技术有限公司 System for recovering high temperature coal gas waste heat with molten salt
CN106051736A (en) * 2016-07-19 2016-10-26 北京华林联合热能技术有限公司 Condensed steam boiler

Similar Documents

Publication Publication Date Title
CN204084522U (en) A kind of kitchen lampblack receives water oil removing heat reclamation device
CN206958947U (en) Low-temperature flue gas waste heat retracting device
CN102515405B (en) Geothermal water purification device and method thereof for treating geothermal water
CN103611377A (en) Gas purification pretreatment method and device
RU2707462C2 (en) Device for production and treatment of gas flow by means of liquid volume, installation and method for implementation for device thereof
CN203131794U (en) Highly efficient system for recycling heat energy and water resource of sewage continuously discharged from boiler
CN202912691U (en) Liquid sulfur collector for sulfur recovery device
CN102580788B (en) Device for online cleaning and regeneration of SCR (Selective Catalytic Reduction) catalyst
CN104384023A (en) Deep purifying device and method for flue gas of large coal-fired power plant
CN103381333A (en) Device and method for dust removal and desulphurization through wet method
CN103480223A (en) Wet-type fume purification system and purification method for high smoke speed PM2.5 and pollutant
CN103657349A (en) Desulphurization and cooling of process gas
CN102198361B (en) Hydrogen chloride tail gas recovery equipment
CN103908879A (en) Flue gas dust removal desulphurization system of double-circulation Venturi rod tower
CN205137507U (en) Water waste heat recovery system is received in dust removal of saturated flue gas behind desulfurizing tower
CN104307278B (en) A kind of dust collector of water curtain
CN104307862A (en) Waste heat utilization system using thermal desorption high temperature cycle spray wastewater to improve normal temperature desorption booth processing efficiency
CN206276171U (en) A kind of high-efficiency flue gas desulfurization cleaner
CN202880931U (en) Automatic water taking and pollution removing device and system using sewage or surface water cold-heat source
CN105013311A (en) Flue gas desulfurization dust and mist removal method
CN105233605B (en) Boiler smoke dedusting and purifying device
CN204582862U (en) Wet type cyclone electric cleaner and be provided with the desulfurizer of wet type cyclone electric cleaner
CN201762121U (en) Double-pump full negative pressure fluid treatment equipment
CN103615839B (en) Self-cleaning heat transfer enhanced solar sewage source heat pump system
CN103230729A (en) Waste gas purification system in rubber processing field

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20160113