CN109289427A - Disappear white anti-corrosive apparatus and the method for hot fume - Google Patents

Disappear white anti-corrosive apparatus and the method for hot fume Download PDF

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Publication number
CN109289427A
CN109289427A CN201811038463.1A CN201811038463A CN109289427A CN 109289427 A CN109289427 A CN 109289427A CN 201811038463 A CN201811038463 A CN 201811038463A CN 109289427 A CN109289427 A CN 109289427A
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CN
China
Prior art keywords
evaporator
flue gas
flue
tube
condenser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811038463.1A
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Chinese (zh)
Inventor
张于峰
赵茂中
姚胜
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Tianjin University Frontier Technology Research Institute
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Tianjin University Frontier Technology Research Institute
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Priority to CN201811038463.1A priority Critical patent/CN109289427A/en
Publication of CN109289427A publication Critical patent/CN109289427A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/30Sulfur compounds

Abstract

The invention discloses disappear white anti-corrosive apparatus and the methods of a kind of hot fume: setting evaporator, desulphurization plant and condenser in flue, working medium pump and liquid storage device, connecting pipe between the outlet of evaporator tube side and condenser tube side import are connected between the import of evaporator tube side and the outlet of condenser tube side;130-170 DEG C of flue gas enters evaporator, and liquid organic medium conveys evaporator by working medium pump, and after heat exchange, organic media reaches 125-165 DEG C of gaseous state, exports evaporator, and flue gas drops to 90-110 DEG C and enters desulphurization plant;Flue gas drops to 50-60 DEG C of discharge desulphurization plant, into condenser, exchanges heat with gaseous state organic media, flue gas is raised to 80-100 DEG C, is discharged into atmosphere;Gaseous state organic media is condensed into 50-65 DEG C, into liquid storage device, is transported to evaporator by working medium pump.The present invention carries out heating treatment to neat stress using itself hot blending technology of flue gas, so that flue-gas temperature is higher than acidic materials dew-point temperature, eliminates the effect of former concrete chimney corrosion.

Description

Disappear white anti-corrosive apparatus and the method for hot fume
Technical field
The present invention relates to energy-conserving and emission-cutting technology fields, and more specifically, it relates to a kind of white anti-corrosive apparatus that disappears of hot fume And method.
Background technique
In all kinds of energy consumption productions in China at present, the technical process of burning fuel is generally existing, during fuel heat is burnt Adjoint process be exactly flue gas discharge, especially in field of thermal power, the discharge amount of flue gas be it is huge, due in flue gas Pollutant has executed minimum discharge standard, but there are serious white cigarette phenomenon, serious pollution atmospheric environments for wet desulphurization;It is white The generation of cigarette is mainly to be saturated caused by moisture discharge in wet flue gas;And the wet flue gas will cause to original because of the acid droplet contained There is the corrosion of concrete chimney wall violent, chimney anticorrosion processing need to be transformed, and will so implement every year, manpower and material resources consumption is huge Greatly.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, provide a kind of hot fume disappear white anti-corrosive apparatus and Method can implement the white and anti-corrosion that disappears of flue gas using the heat blending technology in discharge flue gas, using itself allotment of flue gas heat Technology carries out heating treatment to neat stress, so that flue-gas temperature is higher than acidic materials dew-point temperature, eliminates former concrete chimney corrosion Effect, and without white cigarette phenomenon.
The purpose of the present invention can be achieved through the following technical solutions.
The white anti-corrosive apparatus that disappears of hot fume of the invention, including flue interconnected and chimney, the flue are interior along cigarette Gas emission direction is disposed with evaporator, desulphurization plant and condenser, the tube side import of the evaporator and the pipe of condenser Working medium pump and liquid storage device, the tube side import of the tube side outlet and condenser of the evaporator are connected with by pipeline between journey outlet Between pass through pipeline be connected to.
The purpose of the present invention can be also achieved through the following technical solutions.
The white anti-corrosion method that disappears of the white anti-corrosive apparatus that disappears based on hot fume of the invention, comprising the following steps:
Step 1,130-170 DEG C of high-temperature flue gas is entered in evaporator shell side by flue, at the same time in liquid storage device Liquid organic medium delivered into evaporator tube side by working medium pump, after two kinds of fluids are exchanged heat, organic media exists Evaporative phase-change occurs in evaporator, reaches 125-165 DEG C of gaseous state, exports evaporator into condenser tube side, and flue gas is reduced to It is entered in desulphurization plant after 90-110 DEG C, carries out wet type desulfurizing;
Step 2 after flue-gas temperature is reduced to 50-60 DEG C of discharge desulphurization plant, enters cold by wet type desulfurizing process In condenser shell side, implement condensing heat-exchange with the gaseous state organic media come in flash-pot, result arrives the temperature promotion of flue gas 80-100 DEG C, and through smoke stack emission into atmosphere;
Step 3, gaseous state organic media are condensed into 50-65 DEG C of liquid, enter in liquid storage device, then defeated by working medium pump It is sent in evaporator tube side, so recycles the coordination effect for reaching flue gas heat, can reach the white corrosion-resistant double effects that disappear.
Compared with prior art, the beneficial effects brought by the technical solution of the present invention are as follows:
The present invention can implement the white and anti-corrosion that disappears of flue gas using the heat blending technology in discharge flue gas, using flue gas heat Itself blending technology carries out heating treatment to neat stress, so that flue-gas temperature is higher than acidic materials dew-point temperature, eliminates former concrete cigarette The effect of chimney corrosion, and without white cigarette phenomenon.If can be realized technical effect of the invention, novel environment-friendly boiler can be formed Technical products, the meaning of energy-saving and emission-reduction are apparent.
Detailed description of the invention
Fig. 1 is existing smoke discharging device schematic diagram;
Fig. 2 is the white anti-corrosive apparatus schematic diagram that disappears of hot fume of the present invention.
Appended drawing reference: 1 flue, 2 evaporators, 3 working medium pumps, 4 desulphurization plants,
5 condensers, 6 liquid storage devices, 7 chimneys, 8 coolers.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.Attached drawing only for illustration, should not be understood as pair The limitation of this patent;In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent real The size of border product;To those skilled in the art, in attached drawing certain known features and its explanation may omit be can be with Understand.
Existing smoke discharging device is that cooler and desulphurization plant are arranged in flue, as shown in Figure 1.130-170 DEG C High-temperature flue gas is entered in cooler 8 by flue 1 releases heat, reaches 90-110 DEG C of requirement, into desulphurization plant 4, warp After crossing wet type desulfurization process, sharp temperature drop is to 50-60 DEG C;Then it is discharged into chimney 7 by flue 1, and thus discharges Into atmosphere.Such as: 145 DEG C of high-temperature flue gas is entered in cooler 2 by flue 1 releases heat, reaches the 105 of requirement DEG C, into desulphurization plant 3, after wet type desulfurizing is handled, sharp temperature drop is to 51 DEG C;Then cigarette is discharged by flue 1 In chimney 4, and thus it is discharged into atmosphere.
The steam main contents of reutilization technology of industry cooling heat proposed by the present invention include several sport technique segments: 1. being utilized The evaporating principle of organic media, adds evaporator 2 in flue 1, and organic media absorbs the heat of flue gas (145 DEG C or so);② The heat of absorption is transported in the condenser 5 added after desulphurization plant 4;3. (51 DEG C or so) of flue gas after desulfurization pass through and add Condenser 5, implement to exchange heat with the high-temperature organic dielectric that comes in flash-pot 2, temperature rises to (85 DEG C or so);4. after heating Flue gas emission into atmosphere.
As shown in Fig. 2, the white anti-corrosive apparatus that disappears of hot fume of the invention, including flue interconnected 1 and chimney 7, institute It states in flue 1 and is disposed with evaporator 2, desulphurization plant 4 and condenser 5, the tube side of the evaporator 2 along flue gas emission direction Working medium pump 3 and liquid storage device 6 are connected with by pipeline between the outlet of the tube side of import and condenser 5, the tube side of the evaporator 2 goes out Pass through pipeline between mouth and the tube side import of condenser 5 to be connected to.
The white anti-corrosion method that disappears of hot fume of the invention, detailed process is as follows:
It is entered in 2 shell side of evaporator firstly, 130-170 DEG C of high-temperature flue gas passes through flue 1, at the same time liquid storage device 6 In liquid organic medium delivered into 2 tube side of evaporator by working medium pump 3, after two kinds of fluids are exchanged heat, You Jijie In evaporator 2 evaporative phase-change occurs for matter, reaches 125-165 DEG C of gaseous state, exports evaporator 2 into 5 tube side of condenser, and flue gas It is entered after being reduced to 90-110 DEG C in desulphurization plant 4, carries out wet type desulfurizing;
Then, by wet type desulfurizing process, after flue-gas temperature is reduced to 50-60 DEG C of discharge desulphurization plant 4, condensation is entered In 5 shell side of device, implement condensing heat-exchange with the gaseous state organic media come in flash-pot 2, result arrives the temperature promotion of flue gas 80-100 DEG C, and be discharged into atmosphere by chimney 7;
Finally, gaseous state organic media is condensed into 50-65 DEG C of liquid, enter in liquid storage device 6, then defeated by working medium pump 3 It is sent in 2 tube side of evaporator, so recycles the coordination effect for reaching flue gas heat, can reach the white corrosion-resistant double effects that disappear.
Embodiment one:
The white anti-corrosion method that disappears of hot fume of the invention, detailed process is as follows:
It is entered in 2 shell side of evaporator firstly, 170 DEG C of high-temperature flue gas pass through flue 1, at the same time the liquid in liquid storage device 6 State organic media is delivered into 2 tube side of evaporator by working medium pump 3, and after two kinds of fluids are exchanged heat, organic media is steaming Evaporative phase-change occurs in hair device 2, reaches 165 DEG C of gaseous state, exports evaporator 2 into 5 tube side of condenser, and flue gas is reduced to It is entered after 110 DEG C in desulphurization plant 4, carries out wet type desulfurizing;
Then, by wet type desulfurizing process, after flue-gas temperature is reduced to 60 DEG C of discharge desulphurization plants 4, condenser 5 is entered In shell side, implement condensing heat-exchange with the gaseous state organic media come in flash-pot 2, result promotes the temperature of flue gas to 100 DEG C, and be discharged into atmosphere by chimney 7;
Finally, gaseous state organic media is condensed into 65 DEG C of liquid, enter in liquid storage device 6, then is transported to by working medium pump 3 In 2 tube side of evaporator, the coordination effect for reaching flue gas heat is so recycled, can reach the white corrosion-resistant double effects that disappear.
The present embodiment high temperature flue-gas temperature is 170 DEG C, needs to be reduced to 110 DEG C before desulfurization, it is assumed that the specific heat of flue gas is C, the i.e. thermal loss of flue gas are as follows:
Q1=C* (170-110)=C*60
Flue-gas temperature after desulfurization is 60 DEG C, if the heating amount that flue gas to 100 DEG C, needs are as follows:
Q2=C* (100-60)=C*40
It compares visible: Q1 > Q2, it is seen that the flue gas heat of recycling meets the heat of rear portion heating flue gas, and result must be The exhaust temperature of flue gas is higher than 100 DEG C, using the reasonable transfer of the spontaneous heat of flue gas, reaches the white corrosion-resistant temperature requirement that disappears.
Embodiment two:
The white anti-corrosion method that disappears of hot fume of the invention, detailed process is as follows:
Firstly, 150 DEG C of high-temperature flue gas is entered in 2 shell side of evaporator by flue 1, at the same time in liquid storage device 6 Liquid organic medium is delivered into 2 tube side of evaporator by working medium pump 3, and after two kinds of fluids are exchanged heat, organic media exists Evaporative phase-change occurs in evaporator 2, reaches 145 DEG C of gaseous states, exports evaporator 2 into 5 tube side of condenser, and flue gas is reduced to It is entered after 100 DEG C in desulphurization plant 4, carries out wet type desulfurizing;
Then, by wet type desulfurizing process, after flue-gas temperature is reduced to 55 DEG C of discharge desulphurization plants 4, condenser 5 is entered In shell side, implement condensing heat-exchange with the gaseous state organic media come in flash-pot 2, result promotes the temperature of flue gas to 90 DEG C, and be discharged into atmosphere by chimney 7;
Finally, gaseous state organic media is condensed into 57 DEG C of liquid, enter in liquid storage device 6, then is transported to by working medium pump 3 In 2 tube side of evaporator, the coordination effect for reaching flue gas heat is so recycled, can reach the white corrosion-resistant double effects that disappear.
The present embodiment high temperature flue-gas temperature is 150 DEG C, needs to be reduced to 100 DEG C before desulfurization, it is assumed that the specific heat of flue gas is C, the i.e. thermal loss of flue gas are as follows:
Q1=C* (150-100)=C*50
Flue-gas temperature after desulfurization is 55 DEG C, if the heating amount that flue gas to 90 DEG C, needs are as follows:
Q2=C* (90-55)=C*35
It compares visible: Q1 > Q2, it is seen that the flue gas heat of recycling meets the heat of rear portion heating flue gas, and result must be The exhaust temperature of flue gas is higher than 90 DEG C, using the reasonable transfer of the spontaneous heat of flue gas, reaches the white corrosion-resistant temperature requirement that disappears.
Embodiment three:
The white anti-corrosion method that disappears of hot fume of the invention, detailed process is as follows:
Firstly, 130 DEG C of high-temperature flue gas is entered in 2 shell side of evaporator by flue 1, at the same time in liquid storage device 6 Liquid organic medium is delivered into 2 tube side of evaporator by working medium pump 3, and after two kinds of fluids are exchanged heat, organic media exists Evaporative phase-change occurs in evaporator 2, reaches 125 DEG C of gaseous states, exports evaporator 2 into 5 tube side of condenser, and flue gas is reduced to 90 It is entered after DEG C in desulphurization plant 4, carries out wet type desulfurizing;
Then, by wet type desulfurizing process, after flue-gas temperature is reduced to 50 DEG C of discharge desulphurization plants 4, condenser 5 is entered In shell side, implement condensing heat-exchange with the gaseous state organic media come in flash-pot 2, result promotes the temperature of flue gas to 80 DEG C, and be discharged into atmosphere by chimney 7;
Finally, gaseous state organic media is condensed into 51 DEG C of liquid, enter in liquid storage device 6, then is transported to by working medium pump 3 In 2 tube side of evaporator, the coordination effect for reaching flue gas heat is so recycled, can reach the white corrosion-resistant double effects that disappear.
The present embodiment high temperature flue-gas temperature is 130 DEG C, needs to be reduced to 90 DEG C before desulfurization, it is assumed that the specific heat of flue gas is C, That is the thermal loss of flue gas are as follows:
Q1=C* (130-90)=C*40
Flue-gas temperature after desulfurization is 50 DEG C, if the heating amount that flue gas to 80 DEG C, needs are as follows:
Q2=C* (80-50)=C*30
It compares visible: Q1 > Q2, it is seen that the flue gas heat of recycling meets the heat of rear portion heating flue gas, and result must be The exhaust temperature of flue gas is higher than 80 DEG C, using the reasonable transfer of the spontaneous heat of flue gas, reaches the white corrosion-resistant temperature requirement that disappears.
Although function and the course of work of the invention are described above in conjunction with attached drawing, the invention is not limited to Above-mentioned concrete function and the course of work, the above mentioned embodiment is only schematical, rather than restrictive, ability The those of ordinary skill in domain under the inspiration of the present invention, is not departing from present inventive concept and scope of the claimed protection situation Under, many forms can be also made, all of these belong to the protection of the present invention.

Claims (2)

1. a kind of white anti-corrosive apparatus that disappears of hot fume, including flue interconnected (1) and chimney (7), which is characterized in that described Evaporator (2), desulphurization plant (4) and condenser (5), the evaporator are disposed with along flue gas emission direction in flue (1) (2) working medium pump (3) and liquid storage device (6) are connected with by pipeline between the tube side outlet of tube side import and condenser (5), it is described The tube side of evaporator (2), which is exported, to be connected between the tube side import of condenser (5) by pipeline.
2. a kind of white anti-corrosion method that disappears of the white anti-corrosive apparatus that disappears based on hot fume described in claim 1, which is characterized in that packet Include following steps:
Step 1,130-170 DEG C of high-temperature flue gas are entered in evaporator (2) shell side by flue (1), at the same time liquid storage device (6) liquid organic medium in is delivered into evaporator (2) tube side by working medium pump (3), after two kinds of fluids are exchanged heat, Evaporative phase-change occurs in evaporator (2) for organic media, reaches 125-165 DEG C of gaseous state, output evaporator (2) to condenser (5) in tube side, and flue gas is entered after being reduced to 90-110 DEG C in desulphurization plant (4), carries out wet type desulfurizing;
Step 2 after flue-gas temperature is reduced to 50-60 DEG C of discharge desulphurization plant (4), enters condensation by wet type desulfurizing process In device (5) shell side, implement condensing heat-exchange with the gaseous state organic media come in flash-pot (2), result proposes the temperature of flue gas It is raised to 80-100 DEG C, and is discharged into atmosphere by chimney (7);
Step 3, gaseous state organic media are condensed into 50-65 DEG C of liquid, enter in liquid storage device (6), then pass through working medium pump (3) it is transported in evaporator (2) tube side, so recycles the coordination effect for reaching flue gas heat, it is dual to can reach the white corrosion-resistant that disappears Effect.
CN201811038463.1A 2018-09-06 2018-09-06 Disappear white anti-corrosive apparatus and the method for hot fume Pending CN109289427A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109806751A (en) * 2019-03-25 2019-05-28 周岩 A kind of low energy consumption fire coal boiler fume takes off white system
CN109966887A (en) * 2019-05-17 2019-07-05 河北工业大学 A kind of flue gas processing method and device based on energy matter allotment
CN110131738A (en) * 2019-04-16 2019-08-16 天津大学 ORC flue gas takes off white processing system

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109806751A (en) * 2019-03-25 2019-05-28 周岩 A kind of low energy consumption fire coal boiler fume takes off white system
CN110131738A (en) * 2019-04-16 2019-08-16 天津大学 ORC flue gas takes off white processing system
CN110131738B (en) * 2019-04-16 2020-09-15 天津大学 ORC flue gas whitening treatment system
CN109966887A (en) * 2019-05-17 2019-07-05 河北工业大学 A kind of flue gas processing method and device based on energy matter allotment
CN109966887B (en) * 2019-05-17 2021-06-11 河北工业大学 Energy quality allocation-based flue gas treatment method and device

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