CN204417448U - A kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique - Google Patents
A kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique Download PDFInfo
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- CN204417448U CN204417448U CN201520018075.2U CN201520018075U CN204417448U CN 204417448 U CN204417448 U CN 204417448U CN 201520018075 U CN201520018075 U CN 201520018075U CN 204417448 U CN204417448 U CN 204417448U
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- absorption tower
- decarburization
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Abstract
The utility model provides a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique, comprise desulfurization and decarburization absorption tower, gas-gas heat exchanger, first inlet mouth of gas-gas heat exchanger is connected with Sweet natural gas and enters gas pipeline, first air outlet of gas-gas heat exchanger is connected by pipeline with the inlet mouth on desulfurization and decarburization absorption tower, the air outlet on desulfurization and decarburization absorption tower is connected with flow divider valve by pipeline, one outlet of this flow divider valve is connected by pipeline with the second inlet mouth of gas-gas heat exchanger, second air outlet of gas-gas heat exchanger is connected with wet purification gas and gives vent to anger pipeline, desulfurization and decarburization absorption tower is also connected with hydramine liquid liquid-in pipe line, this liquid-in pipe line is provided with valve.Improve the temperature that unstripped gas enters absorption tower, accelerate CO to a certain extent
2speed of reaction, thus improve CO
2removal effect, the hydramine liquid internal circulating load of reduction and desulfurization and decarburization absorption tower tower tray number, also reduce the temperature of wet purification gas, thus reduce dewatering unit operating load.
Description
Technical field
The utility model relates to a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique.
Background technology
In hydramine selexol process carbon rejection process, completed mass transfer and the heat transfer process of Sweet natural gas and alkanolamine solution by absorption tower, and then realize the desulfurization and decarburization of Sweet natural gas;
For CO
2/ H
2when the sour gas that S ratio is high selects alcohol amine method technology to purify, not only thoroughly to remove H
2s, also will remove CO in a large number
2.
Hydramine liquid and H
2s reaction belongs to the fast proton reaction completed instantaneously, temperature is relatively little on the impact of its speed of reaction, and temperature mainly affects H
2s equilibrium solubility in the solution, so lower unstripped gas temperature is conducive to H
2s removes, and therefore conventional alcohol amine desulfilrization unit enters desulfurizer unstripped gas and directly enters absorption tower and carry out absorption cleaning.And alkanolamine solution and CO
2reaction is slow, and its reaction is by kinetic control, therefore higher unstripped gas temperature is then conducive to accelerating CO
2speed of reaction.
For the desulfurization and decarburization device being located in China northern territory, in very long cold in winter (year-round average temperature 8 DEG C), in the whole year, sulfur-containing gas enters absorption tower temperature all lower (3 ~ 18 DEG C), is unfavorable for CO
2remove.
Utility model content
For the problems referred to above, the utility model provides a kind of raising and contains the method that sour gas Sweet natural gas enters desulfurization and decarburization absorption tower temperature, guarantees CO
2the Alcohol-amine Desulfurization Decarbonization Units of removal effect.
For achieving the above object, the utility model by the following technical solutions, a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique, comprise desulfurization and decarburization absorption tower, also comprise gas-gas heat exchanger, first inlet mouth of described gas-gas heat exchanger is connected with Sweet natural gas and enters gas pipeline, first air outlet of described gas-gas heat exchanger is connected by pipeline with the inlet mouth on desulfurization and decarburization absorption tower, the air outlet on described desulfurization and decarburization absorption tower is connected with flow divider valve by pipeline, one outlet of this flow divider valve is connected by pipeline with the second inlet mouth of gas-gas heat exchanger, second air outlet of described gas-gas heat exchanger is connected with wet purification gas and gives vent to anger pipeline, described desulfurization and decarburization absorption tower is also connected with hydramine liquid liquid-in pipe line, this liquid-in pipe line is provided with valve, the inlet mouth on described desulfurization and decarburization absorption tower is located at the below of the air outlet on desulfurization and decarburization absorption tower, and described liquid-in pipe line is connected between the inlet mouth on desulfurization and decarburization absorption tower and the air outlet on desulfurization and decarburization absorption tower.
Described flow divider valve is T-valve, and another outlet of this T-valve and wet purification gas pipeline of giving vent to anger are connected by pipeline.
Described liquid-in pipe line is by 3 mutual by-pass lines arranged side by side and collaborate latter linked main pipe line with 3 by-pass lines and form, described 3 mutual by-pass lines arranged side by side are respectively equipped with valve, and these 3 mutual by-pass lines arranged side by side are connected with desulfurization and decarburization absorption tower respectively from the top down.
Between first air outlet of described gas-gas heat exchanger and desulfurization and decarburization absorption tower inlet mouth between pipeline on be also provided with temperature monitor.
Described gas-gas heat exchanger selects tube and shell heat exchanger.
The inlet mouth on described desulfurization and decarburization absorption tower is positioned at the bottom on desulfurization and decarburization absorption tower, and the air outlet on desulfurization and decarburization absorption tower is positioned at the top on desulfurization and decarburization absorption tower, and described liquid-in pipe line is connected to the middle and upper part on desulfurization and decarburization absorption tower.
The utility model adopts technique scheme, has the following advantages: when unstripped gas enters gas-gas heat exchanger, and the unstripped gas after heating enters desulfurization and decarburization absorption tower, is temperature comparatively high humidity purified gas after purification; The wet purification gas of desulfurization and decarburization absorption tower outlet, by flow divider valve, controls the flow that wet purification gas enters gas/gas interchanger; Wet purification gas enter gas/gas interchanger and unstripped gas heat exchange cool after to dewatering unit, effectively improve the method entering desulfurization and decarburization absorption tower temperature containing sour gas Sweet natural gas, guarantee CO
2the Alcohol-amine Desulfurization Decarbonization Units of removal effect.
(1) without external heat source, the heat heating raw gas that hydramine method exothermic heat of reaction is reacted is utilized;
(2) not only increase the temperature that unstripped gas enters absorption tower, accelerate CO to a certain extent
2speed of reaction, thus improve CO
2removal effect, the hydramine liquid internal circulating load of reduction and desulfurization and decarburization absorption tower tower tray number, also reduce the temperature of wet purification gas, thus reduce dewatering unit operating load;
(3) by the setting of T-valve, accurately can control the tolerance of wet purification gas air inlet/gas interchanger, thus guarantee that unstripped gas is temperature controlled constant, ensure the smooth running of desulfurization and decarburization device.
Accompanying drawing explanation
Fig. 1 is use structural representation of the present utility model;
In figure: 1. gas-gas heat exchanger; 2. desulfurization and decarburization absorption tower; 3. flow divider valve; 4. enter gas pipeline; 5. to give vent to anger pipeline; 6. liquid-in pipe line; 7. valve; 101. first inlet mouths; 102. first air outlets; 103. second inlet mouths; 104. second air outlets.
Embodiment
Embodiment is described in detail a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique further below.
Embodiment 1
As shown in Figure 1, a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique, comprise desulfurization and decarburization absorption tower 2, also comprise gas-gas heat exchanger 1, first inlet mouth 101 of described gas-gas heat exchanger 1 is connected with Sweet natural gas and enters gas pipeline 4, first air outlet 102 of described gas-gas heat exchanger 1 is connected by pipeline with the inlet mouth on desulfurization and decarburization absorption tower 2, the air outlet on described desulfurization and decarburization absorption tower 2 is connected with flow divider valve 3 by pipeline, one outlet of this flow divider valve 3 is connected by pipeline with the second inlet mouth 103 of gas-gas heat exchanger 1, second air outlet 104 of described gas-gas heat exchanger 1 is connected with wet purification gas and gives vent to anger pipeline 5, described desulfurization and decarburization absorption tower 2 is also connected with hydramine liquid liquid-in pipe line 6, this liquid-in pipe line 6 is provided with valve 7, the inlet mouth on described desulfurization and decarburization absorption tower 2 is located at the below of the air outlet on desulfurization and decarburization absorption tower 2, and described liquid-in pipe line 6 is connected between the inlet mouth on desulfurization and decarburization absorption tower 2 and the air outlet on desulfurization and decarburization absorption tower 2.
Operationally, when unstripped gas operating temperature is 3 ~ 18 DEG C, enter gas-gas heat exchanger 1, carry out heat exchange with the wet purification gas of being discharged by desulfurization and decarburization absorption tower 2, temperature rises to 26 DEG C; Unstripped gas after heating enters the bottom on desulfurization and decarburization absorption tower 2, in desulfurization and decarburization absorption tower 2, and the hydramine liquid counter current contact that unstripped gas enters with liquid-in pipe line 6 from bottom to top, almost whole H in gas
2s and part CO
2by hydramine liquid absorbing and removing; Hydramine liquid and H
2s and CO
2absorption reaction is exothermic chemical reaction, and simultaneously hydramine liquid enters tower 2 temperature and reaches 40 ~ 45 DEG C, and therefore wet purification gas tower exit temperature reaches 43 ~ 50 DEG C; Wet purification gas enters gas-gas heat exchanger 1 and carries out heat exchange with unstripped gas, and wet purification gas is cooled to 20 ~ 44 DEG C, then enters dewatering unit.Can find out, this embodiment, without external heat source, utilizes the heat heating raw gas that hydramine method exothermic heat of reaction is reacted; Not only increase the temperature that unstripped gas enters absorption tower, accelerate CO to a certain extent
2speed of reaction, thus improve CO
2removal effect, the hydramine liquid internal circulating load of reduction and desulfurization and decarburization absorption tower tower tray number, also reduce the temperature of wet purification gas, thus reduce dewatering unit operating load;
Embodiment 2
On the basis of embodiment 1, as shown in Figure 1, a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique, comprise desulfurization and decarburization absorption tower 2, also comprise gas-gas heat exchanger 1, first inlet mouth 101 of described gas-gas heat exchanger 1 is connected with Sweet natural gas and enters gas pipeline 4, first air outlet 102 of described gas-gas heat exchanger 1 is connected by pipeline with the inlet mouth on desulfurization and decarburization absorption tower 2, the air outlet on described desulfurization and decarburization absorption tower 2 is connected with flow divider valve 3 by pipeline, one outlet of this flow divider valve 3 is connected by pipeline with the second inlet mouth 103 of gas-gas heat exchanger 1, described flow divider valve 3 is T-valve, another outlet of this T-valve and wet purification gas pipeline 5 of giving vent to anger are connected by pipeline, second air outlet 104 of described gas-gas heat exchanger 1 is connected with wet purification gas and gives vent to anger pipeline 5, described desulfurization and decarburization absorption tower 2 is also connected with hydramine liquid liquid-in pipe line 6, this liquid-in pipe line 6 is provided with valve 7, the inlet mouth on described desulfurization and decarburization absorption tower 2 is located at the below of the air outlet on desulfurization and decarburization absorption tower 2, and described liquid-in pipe line 6 is connected between the inlet mouth on desulfurization and decarburization absorption tower 2 and the air outlet on desulfurization and decarburization absorption tower 2.Because unstripped gas enters device winter or summer temperature variation greatly, be 3 ~ 18 DEG C, dimension is stable in order to ensure into desulfurization and decarburization absorption tower 2, need ensure that feed gas temperature is constant.By arranging flow divider valve 3, control the wet purification gas entering gas-gas heat exchanger 1, when in summer, the temperature of raw-gas is higher, need the temperature of conversion relatively low, by controlling T-valve, make the gas small part of air outlet, desulfurization and decarburization absorption tower 2 enter into gas-gas heat exchanger 1 and carry out heat exchange through row and raw-gas, another most of gas is directly discharged from pipeline 5 of giving vent to anger, when winter, raw-gas temperature is lower, need the temperature of conversion relatively large, by controlling T-valve, make the gas of air outlet, desulfurization and decarburization absorption tower 2 major part or all enter into gas-gas heat exchanger 1 to carry out heat exchange through row and raw-gas, that the temperature of raw-gas reaches preset value, another small portion of gas is discharged from pipeline 5 of giving vent to anger.Can find out, external heat source, utilize the heat heating raw gas that hydramine method exothermic heat of reaction is reacted; Not only increase the temperature that unstripped gas enters absorption tower, accelerate CO to a certain extent
2speed of reaction, thus improve CO
2removal effect, the hydramine liquid internal circulating load of reduction and desulfurization and decarburization absorption tower tower tray number, also reduce the temperature of wet purification gas, thus reduce dewatering unit operating load; By the setting of T-valve, accurately can control the tolerance of wet purification gas air inlet/gas interchanger, thus guarantee that unstripped gas is temperature controlled constant, ensure the smooth running of desulfurization and decarburization device.
Embodiment 3
On the basis of embodiment 1, described liquid-in pipe line 6 is by 3 mutual by-pass lines arranged side by side and collaborate latter linked main pipe line with 3 by-pass lines and form, described 3 mutual by-pass lines arranged side by side are respectively equipped with valve 7, and these 3 mutual by-pass lines arranged side by side are connected with desulfurization and decarburization absorption tower 2 respectively from the top down, many by-pass line can alleviate the pressure that hydramine liquid enters sulphur decarburization absorption tower 2, simultaneously hydramine liquid and and H
2s and CO
2more all absorption reaction is exothermic chemical reaction, liberated heat is more, the inlet mouth on described desulfurization and decarburization absorption tower 2 is positioned at the bottom on desulfurization and decarburization absorption tower 2, the air outlet on desulfurization and decarburization absorption tower 2 is positioned at the top on desulfurization and decarburization absorption tower 2, described liquid-in pipe line 6 is connected to the middle and upper part on desulfurization and decarburization absorption tower 2, to hydramine liquid and H
2s and CO
2contact area larger, react completely.
Embodiment 4
On the basis of embodiment 1, between the first air outlet 102 of described gas-gas heat exchanger 1 and desulfurization and decarburization absorption tower 2 inlet mouth between pipeline on be also provided with temperature monitor.This temperature monitor can the temperature detected after gas-gas heat exchanger 1 heat exchange in moment, and what enter informs the flow that need not need to control air outlet, desulfurization and decarburization absorption tower 2 gas by controlling flow divider valve 3.
Embodiment 5
On the basis of embodiment 1, in order to the heat exchange property of gas-gas heat exchanger 1 is more good, heat transfer rate is larger, and therefore gas-gas heat exchanger 1 selects tube and shell heat exchanger.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.
Claims (6)
1. one kind is improved the device of the unstripped gas temperature of hydramine method desulfurization and decarburization technique, comprise desulfurization and decarburization absorption tower (2), it is characterized in that, also comprise gas-gas heat exchanger (1), first inlet mouth (101) of described gas-gas heat exchanger (1) is connected with Sweet natural gas and enters gas pipeline (4), first air outlet (102) of described gas-gas heat exchanger (1) is connected by pipeline with the inlet mouth of desulfurization and decarburization absorption tower (2), the air outlet on described desulfurization and decarburization absorption tower (2) is connected with flow divider valve (3) by pipeline, one outlet of this flow divider valve (3) is connected by pipeline with second inlet mouth (103) of gas-gas heat exchanger (1), second air outlet (104) of described gas-gas heat exchanger (1) is connected with wet purification gas and gives vent to anger pipeline (5), described desulfurization and decarburization absorption tower (2) is also connected with hydramine liquid liquid-in pipe line (6), this liquid-in pipe line (6) is provided with valve (7), the inlet mouth on described desulfurization and decarburization absorption tower (2) is located at the below of the air outlet on desulfurization and decarburization absorption tower (2), and described liquid-in pipe line (6) is connected between the inlet mouth on desulfurization and decarburization absorption tower (2) and the air outlet of desulfurization and decarburization absorption tower (2).
2. a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique according to claim 1, it is characterized in that, described flow divider valve (3) is T-valve, and another outlet of this T-valve and wet purification gas pipeline (5) of giving vent to anger are connected by pipeline.
3. a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique according to claim 1, it is characterized in that, described liquid-in pipe line (6) is by 3 mutual by-pass lines arranged side by side and collaborate latter linked main pipe line with 3 by-pass lines and form, described 3 mutual by-pass lines arranged side by side are respectively equipped with valve (7), and these 3 mutual by-pass lines arranged side by side are connected with desulfurization and decarburization absorption tower (2) respectively from the top down.
4. a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique according to claim 1, it is characterized in that, between first air outlet (102) of described gas-gas heat exchanger (1) and desulfurization and decarburization absorption tower (2) inlet mouth between pipeline on be also provided with temperature monitor.
5. a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique according to claim 1, it is characterized in that, described gas-gas heat exchanger (1) selects tube and shell heat exchanger.
6. a kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique according to claim 1, it is characterized in that, the inlet mouth on described desulfurization and decarburization absorption tower (2) is positioned at the bottom of desulfurization and decarburization absorption tower (2), the air outlet on desulfurization and decarburization absorption tower (2) is positioned at the top of desulfurization and decarburization absorption tower (2), and described liquid-in pipe line (6) is connected to the middle and upper part of desulfurization and decarburization absorption tower (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520018075.2U CN204417448U (en) | 2015-01-12 | 2015-01-12 | A kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520018075.2U CN204417448U (en) | 2015-01-12 | 2015-01-12 | A kind of device improving the unstripped gas temperature of hydramine method desulfurization and decarburization technique |
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| CN204417448U true CN204417448U (en) | 2015-06-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753646A (en) * | 2017-02-27 | 2017-05-31 | 西安长庆科技工程有限责任公司 | A kind of miniature liquid desulfurization skid-mounted unit containing metering and heating function |
-
2015
- 2015-01-12 CN CN201520018075.2U patent/CN204417448U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753646A (en) * | 2017-02-27 | 2017-05-31 | 西安长庆科技工程有限责任公司 | A kind of miniature liquid desulfurization skid-mounted unit containing metering and heating function |
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