CN202638028U - Energy integration balancing apparatus for flue gas desulphurization desorption steam and low temperature flue gas - Google Patents
Energy integration balancing apparatus for flue gas desulphurization desorption steam and low temperature flue gas Download PDFInfo
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- CN202638028U CN202638028U CN 201220051843 CN201220051843U CN202638028U CN 202638028 U CN202638028 U CN 202638028U CN 201220051843 CN201220051843 CN 201220051843 CN 201220051843 U CN201220051843 U CN 201220051843U CN 202638028 U CN202638028 U CN 202638028U
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- low temperature
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- temperature flue
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Abstract
The utility model discloses an energy integration balancing apparatus for flue gas desulphurization desorption steam and low temperature flue gas. The apparatus comprises a first order condenser, a secondary condenser and a gas-liquid separation device. The tower top of a desorption tower is connected to the tube side of the first order condenser through a desorption gas pipe; the shell side of the first order condenser is connected with a low temperature flue gas inlet pipe and a low temperature flue gas outlet pipe; the tube side outlet of the first order condenser is connected with a saturated steam pipe; the saturated stream pipe is connected with the tube side of the secondary condenser; the shell side of the secondary condenser is connected with an inlet pipe and an outlet pipe; the tube side outlet of the secondary condenser is connected with the gas-liquid separation device through a gas and water hybrid pipe; the top of the gas-liquid separation device is connected to subsequent workshop sections through a sulfur dioxide gas pipe; and the bottom of the gas-liquid separation device is connected with the desorption tower through a condensed water pipe. According to the utility model, the low temperature flue gas in an absorbing tower is heated by the desorption steam at the tower top of the desorption tower, energy for heating the low temperature flue gas is saved, simultaneously, the cooling water amount of the condensers is reduced, the manufacture cost of equipment is low, the energy utilization efficiency is high, and the energy consumption of flue gas desulphurization is reduced.
Description
Technical field
The utility model relates to method and the device of flue gas desulfurization, particularly flue gas desulfurization desorption steam and low temperature flue gas energy synthesis bascule.
Background technology
Present low concentration SO
2Flue gas desulfurization important process method is the organic amine absorption process, and the organic amine absorption technique is take the aqueous solution of organic amine as absorbent.This arts demand desorbs sulfur dioxide from organic solution, so that absorbent is reused, reduce desulphurization cost.
Along with energy-conservation and raising environmental requirement, many small-sized thermal power plants and small-sized smeltery will progressively eliminate.And then thermal power plant and smeltery are to maximization device future development, the desulfurizer of thermal power plant and smeltery is also to large scale development now, quantity of steam in the process system and flue tolerance are huge, and in today of low-carbon energy-saving, overall balance how to carry out energy is significant to energy-saving and emission-reduction.
Take By Amine Solutions absorption technique typical operation as example, out effluent gas temperature mostly is greatly 40 ℃～60 ℃ from the absorption tower, from the desorber cat head out the desorption steam main component be saturated water vapour, temperature is about 110 ℃, wherein content of sulfur dioxide is generally less than 10%, and desorption steam is being cooled under the condition of normal pressure or pressure-fired about 40 ℃, and a large amount of water vapours are condensed into aqueous water, sulfur dioxide then is incoagulable gas, realizes separating of water vapour and sulfur dioxide by separator.
The exhaust temperature of flue gas in atmosphere need to just can be conducive to the aerial diffusion of flue gas more than 80 ℃, guarantees the ambient air environmental quality.Present common processing method is that the hot-air that will be heated to uniform temperature is discharged to the atmosphere from chimney after 40 ℃ flue gas is mixed.
In the sulfur dioxide gas desorption process, need a large amount of desorption steams is cooled to about 40 ℃, condensate liquid (mainly being water) comes back in the tower and refluxes, and separates the sulfur dioxide that reclaims and enters follow-up workshop section.For the condensing cooling desorption steam need to consume a large amount of cooling waters, according to the height of cooling water outlet temperature, usually reclaim one ton of sulfur dioxide and need to consume about 300～600 tons of cooling waters.
In the existing process, heat on the one hand a large amount of hot-airs about 40 ℃ flue gas is warmed up to discharging more than 80 ℃, consumed energy; Consume on the other hand a large amount of cooling waters in the desorption steam condensation process, if the energy of desorption steam and low temperature flue gas is carried out overall balance, the energy that then can save heating low temperature flue gas reduces the consumption of cooling water in the desorption process simultaneously, reaches the target of total energy approach, energy-saving and emission-reduction.
Summary of the invention
The purpose of this utility model is: a kind of flue gas desulfurization desorption steam and low temperature flue gas energy synthesis bascule are provided, the energy of low temperature flue gas and desorption steam in the method and the device overall balance flue gas desulfurization course, energy utilization efficiency is high, energy consumption is low, solves the low technical problem of capacity usage ratio that exists in the existing technique.
Technical solution of the present utility model is: the process of this energy synthesis balance may further comprise the steps: at first, enter the tube side of first-stage condenser from first-stage condenser top from desorber cat head desorption steam out, out 40 ℃ of low temperature flue are made the first-stage condenser shell side leave with rage from the absorption tower, desorption steam is cooled and partial condensation, and flue gas is heated to 80 ℃ from 40 ℃ and goes smoke stack emission; Secondly, enter the tube side of secondary condenser from the first-stage condenser saturated gas that contains sulfur dioxide and water vapour out, sulfur dioxide gas and condensed water are cooled to the assigned temperature of follow-up workshop section in secondary condenser; At last, the condensed water and the sulfur dioxide gas that export out from the secondary condenser tube side enter gas-liquid separator, go to follow-up workshop section from gas-liquid separator top sulfur dioxide gas out, get back to desorber from gas-liquid separator bottom condensed water out.
Wherein, the device of flue gas desulfurization desorption steam and low temperature flue gas energy synthesis balance comprises first-stage condenser and secondary condenser and gas-liquid separator, the cat head of desorber connects the tube side of first-stage condenser through the desorb steam pipe, connect low temperature flue gas air inlet pipe and low temperature flue gas escape pipe on the first-stage condenser shell side, the tube side outlet of first-stage condenser connects saturated steam pipe and is connected with the tube side of secondary condenser, connect water inlet pipe and outlet pipe on the secondary condenser shell side, the tube side outlet of secondary condenser connects gas-liquid separator through mixing battery, the gas-liquid separator top connects follow-up workshop section through the sulfur dioxide tracheae, and the gas-liquid separator bottom connects desorber through condensate pipe.
Wherein, first-stage condenser and secondary condenser are fixed tube sheet heat exchanger or other forms of dividing wall type heat exchanger.
Wherein, the heat exchange tube of first-stage condenser is welded with fin outward increases the flue gas effective heat exchange area.
Wherein, the I and II condenser can vertical or horizontal installation.
Wherein, first-stage condenser is the corrosion resisting stainless steel manufacturing.
Wherein, the shell-side cylinder of secondary condenser is by the carbon steel material manufacturing, the tube sheet of secondary condenser is at the corrosion resisting stainless steel material of 6～10 millimeters of tube side one side linings, adopt compound or the built-up welding mode at tube sheet lining corrosion resisting stainless steel material, tube side end socket and tube side cylindrical shell straight length adopt the manufacturing of corrosion resisting stainless steel material.
Wherein, secondary condenser tube side flange adopts the carbon steel manufacturing, and sealing surface adopts compound or the built-up welding mode serves as a contrast the corrosion resisting stainless steel material.
During the desulfurization desorb, enter the first-stage condenser tube side from desorber cat head desorption steam out, carry out heat exchange with the flue gas from shell side, desorption steam is cooled and partial condensation, and 40 ℃ low temperature flue gas is heated to more than 80 ℃; Enter the tube side of secondary condenser from the first-stage condenser desorption steam that contains sulfur dioxide, saturated vapor and condensed water out, sulfur dioxide gas and water vapour are cooled and condense to the assigned temperature of follow-up workshop section, enter gas-liquid separator from secondary condenser tube side condensed water and sulfur dioxide gas out, go to follow-up workshop section from gas-liquid separator top sulfur dioxide gas out, get back in the desorber from gas-liquid separator bottom condensed water out.
The utlity model has following advantage: 1, in first-stage condenser, desorption steam is cooled and partial condensation, heat simultaneously low temperature flue gas, low temperature flue gas with the desorption steam heating absorption tower of desorber cat head, save the required energy of low temperature flue gas heating, reduce simultaneously the condenser cooling water consumption; 2, in secondary condenser, desorption steam is walked tube side, guarantees that the part parts of secondary condenser can use cheaply carbon steel manufacturing, reduces the manufacturing expense of equipment.
Description of drawings
Fig. 1 is device block diagram of the present utility model.
Among the figure: 1 desorber, 2 first-stage condenser, 3 secondary condensers, 4 gas-liquid separators, 5 desorb tracheaes, 6 low temperature flue gas air inlet pipe, 7 low temperature flue gas escape pipes, 8 saturated steam pipes, 9 cooling water inlet pipes, 10 cooling water outlet pipes, 11 mixing batteries, 12 sulfur dioxide tracheaes, 13 condensate return pipes.
The specific embodiment
As shown in Figure 1, the energy synthesis bascule comprises first-stage condenser 2 and secondary condenser 3 and gas-liquid separator 4, the cat head of desorber 1 connects the tube side of first-stage condenser 2 through desorb steam pipe 5, connect low temperature flue gas air inlet pipe 6 and low temperature flue gas escape pipe 7 on the shell side of first-stage condenser 2, the outlet of first-stage condenser 2 tube sides connects saturated steam pipe 8, saturated steam pipe 8 connects the tube side of secondary condenser 3, connect cooling water inlet pipe 9 and cooling water outlet pipe 10 on secondary condenser 3 shell sides, the tube side outlet of secondary condenser 3 connects gas-liquid separator 4 through mixing battery 11, gas-liquid separator 4 tops connect follow-up workshop section through sulfur dioxide tracheae 12, and gas-liquid separator 4 bottoms connect desorber 1 through condensate pipe 13.
Wherein, first-stage condenser 2 and secondary condenser 3 are fixed tube sheet heat exchanger or other forms of dividing wall type heat exchanger.
Wherein, the heat exchange tube of first-stage condenser 2 is welded with fin outward increases the flue gas effective heat exchange area.
Wherein, the I and II condenser can vertical or horizontal installation.
Wherein, first-stage condenser 2 is the corrosion resisting stainless steel manufacturing.
Wherein, the shell-side cylinder of secondary condenser 3 is by the carbon steel material manufacturing, the tube sheet of secondary condenser 3 is at the corrosion resisting stainless steel material of 6～10 millimeters of tube side one side linings, adopt compound or the built-up welding mode at tube sheet lining corrosion resisting stainless steel material, tube side end socket and tube side cylindrical shell straight length adopt the manufacturing of corrosion resisting stainless steel material.
Wherein, secondary condenser 3 tube side flanges adopt the carbon steel manufacturing, and sealing surface adopts compound or the built-up welding mode serves as a contrast the corrosion resisting stainless steel material.
The process of flue gas desulfurization desorption steam and low temperature flue gas energy synthesis balance is: at first, enter the tube side of first-stage condenser from desorber 1 cat head desorption steam out from first-stage condenser 2 tops, out 40 ℃ of low temperature flue are made first-stage condenser 2 shell sides leave with rage from the absorption tower, desorption steam is cooled and partial condensation, and flue gas is heated to 80 ℃ from 40 ℃ and goes smoke stack emission; Secondly, enter the tube side of secondary condenser 3 from first-stage condenser 2 saturated gas that contains sulfur dioxide and water vapour out, be cooled to the assigned temperature of follow-up workshop section at secondary condenser 3 interior sulfur dioxide gas and condensed water; At last, the condensed water and the sulfur dioxide gas that export out from secondary condenser 3 tube sides enter gas-liquid separator 4, go to follow-up workshop section from gas-liquid separator 4 tops sulfur dioxide gas out, get back to desorber from gas-liquid separator 4 bottoms condensed water out.
Claims (7)
1. the device of flue gas desulfurization desorption steam and low temperature flue gas energy synthesis balance, it is characterized in that: this device comprises first-stage condenser (2) and secondary condenser (3) and gas-liquid separator (4), the cat head of desorber (1) connects the tube side of first-stage condenser (2) through desorb tracheae (5), connect low temperature flue gas air inlet pipe (6) and low temperature flue gas escape pipe (7) on first-stage condenser (2) shell side, the tube side outlet of first-stage condenser (2) connects saturated steam pipe (8), saturated steam pipe (8) connects the tube side of secondary condenser (3), connect water inlet pipe (9) and outlet pipe (10) on secondary condenser (3) shell side, the tube side outlet of secondary condenser (3) connects gas-liquid separator (4) through mixing battery (11), gas-liquid separator (4) top connects follow-up workshop section through sulfur dioxide tracheae (12), and gas-liquid separator (4) bottom connects desorber (1) through condensate pipe (13).
2. the device of flue gas desulfurization desorption steam according to claim 2 and low temperature flue gas energy synthesis balance, it is characterized in that: wherein, first-stage condenser (2) and secondary condenser (3) are fixed tube sheet heat exchanger or other forms of dividing wall type heat exchanger.
3. the device for flue gas desulfurization desorption steam and low temperature flue gas energy synthesis balance according to claim 2 is characterized in that: wherein, the heat exchange tube of first-stage condenser (2) is welded with fin outward increases the flue gas effective heat exchange area.
4. the device for flue gas desulfurization desorption steam and low temperature flue gas energy synthesis balance according to claim 2, it is characterized in that: wherein, the I and II condenser can vertical or horizontal installation.
5. the device for flue gas desulfurization desorption steam and low temperature flue gas energy synthesis balance according to claim 2, it is characterized in that: wherein, first-stage condenser (2) is the corrosion resisting stainless steel manufacturing.
6. the device for flue gas desulfurization desorption steam and low temperature flue gas energy synthesis balance according to claim 2, it is characterized in that: wherein, the shell-side cylinder of secondary condenser (3) is by the carbon steel material manufacturing, the tube sheet of secondary condenser (3) is at the corrosion resisting stainless steel material of 6～10 millimeters of tube side one side linings, adopt compound or the built-up welding mode at tube sheet lining corrosion resisting stainless steel material, tube side end socket and tube side cylindrical shell straight length adopt the manufacturing of corrosion resisting stainless steel material.
7. the device for flue gas desulfurization desorption steam and low temperature flue gas energy synthesis balance according to claim 2, it is characterized in that: wherein, secondary condenser (3) tube side flange adopts the carbon steel manufacturing, and sealing surface adopts compound or the built-up welding mode serves as a contrast the corrosion resisting stainless steel material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220051843 CN202638028U (en) | 2012-02-17 | 2012-02-17 | Energy integration balancing apparatus for flue gas desulphurization desorption steam and low temperature flue gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220051843 CN202638028U (en) | 2012-02-17 | 2012-02-17 | Energy integration balancing apparatus for flue gas desulphurization desorption steam and low temperature flue gas |
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| CN202638028U true CN202638028U (en) | 2013-01-02 |
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| CN 201220051843 Expired - Fee Related CN202638028U (en) | 2012-02-17 | 2012-02-17 | Energy integration balancing apparatus for flue gas desulphurization desorption steam and low temperature flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580469A (en) * | 2012-02-17 | 2012-07-18 | 江苏科圣热能设备工程有限公司 | Technical method and device for comprehensively balancing energy of desorption steam and flue gas during flue gas desulfurization |
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2012
- 2012-02-17 CN CN 201220051843 patent/CN202638028U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580469A (en) * | 2012-02-17 | 2012-07-18 | 江苏科圣热能设备工程有限公司 | Technical method and device for comprehensively balancing energy of desorption steam and flue gas during flue gas desulfurization |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130102 Termination date: 20140217 |