CN205505779U - Liquid level holdout device at bottom of tower - Google Patents
Liquid level holdout device at bottom of tower Download PDFInfo
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- CN205505779U CN205505779U CN201620141105.3U CN201620141105U CN205505779U CN 205505779 U CN205505779 U CN 205505779U CN 201620141105 U CN201620141105 U CN 201620141105U CN 205505779 U CN205505779 U CN 205505779U
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Abstract
本实用新型属于煤化工工艺领域，具体涉及一种塔底液位维持装置，包括顺次连接冷却塔和废水回收装置，所述的冷却塔顶部设置有水煤气出口和循环水进口；所述的冷却塔底部设置有水煤气进口和循环水出口；所述的循环水出口通过管路a连接废水回收装置；所述的管路a上设置有控制阀门；所述的管路a连接有竖直管路b；所述的管路b上连接有管路c；采用这种结构的塔底液位维持装置，可以使塔内液位保持稳定，不需要操作工紧盯液位，有效防止管路憋压。
The utility model belongs to the field of coal chemical technology, and specifically relates to a liquid level maintenance device at the bottom of a tower, which comprises a cooling tower and a waste water recovery device connected in sequence, and the top of the cooling tower is provided with a water gas outlet and a circulating water inlet; the cooling The bottom of the tower is provided with a water gas inlet and a circulating water outlet; the circulating water outlet is connected to the waste water recovery device through the pipeline a; the pipeline a is provided with a control valve; the pipeline a is connected to a vertical pipeline b; said pipeline b is connected with pipeline c; the liquid level maintenance device at the bottom of the tower with this structure can keep the liquid level in the tower stable, and does not require the operator to keep an eye on the liquid level, effectively preventing the pipeline from being blocked pressure.
Description
技术领域technical field
本实用新型属于煤化工工艺领域，具体涉及一种塔底液位维持装置。The utility model belongs to the field of coal chemical technology, in particular to a tower bottom liquid level maintaining device.
背景技术Background technique
湿法脱硫是现代化工生产中普及度较广的脱硫技术，而对加压升温后的水煤气进行降温处理是必须经历的一项重要工序。Wet desulfurization is a widely popular desulfurization technology in modern chemical production, and cooling the water gas after pressurization and heating is an important process that must be experienced.
脱硫装置采用水冷却塔对高温水煤气进行降温，即塔顶通入温度较低的循环水，与从塔底进入的水煤气逆向接触进行传热。在生产过程中，冷却塔底部会形成一定高度的液位，为防止液位过高需要监控液位，以防止水面会高于水煤气进口管路而引起堵塞。传统的控制方法是在塔底安装管路进行排放，并在管路上加装阀组以定时排放或设置联锁进行排放。但是，在生产中调节阀组如果出现问题或调节精度较低，那么会导致塔内液位不准确发生波动，同时采用阀组进行调节也会增加操作工的工作量。The desulfurization device uses a water cooling tower to cool down the high-temperature water gas, that is, circulating water with a lower temperature is introduced into the top of the tower, and it is in reverse contact with the water gas entering from the bottom of the tower for heat transfer. During the production process, a certain level of liquid level will be formed at the bottom of the cooling tower. In order to prevent the liquid level from being too high, the liquid level needs to be monitored to prevent the water level from being higher than the water gas inlet pipeline and causing blockage. The traditional control method is to install a pipeline at the bottom of the tower for discharge, and install a valve group on the pipeline to discharge regularly or set an interlock for discharge. However, if there is a problem with the adjustment valve group during production or the adjustment accuracy is low, it will lead to inaccurate fluctuations in the liquid level in the tower, and the use of the valve group for adjustment will also increase the workload of the operator.
基于上述原因，设计发明一种新的工艺方案以方便操作保证正常生产就显得尤为必要。Based on the above reasons, it is particularly necessary to design and invent a new process scheme to facilitate operation and ensure normal production.
发明内容Contents of the invention
为了解决冷却塔液位难以控制的问题，本发明提供了一种新的塔底液位维持装置，包括顺次连接冷却塔和废水回收装置，所述的冷却塔顶部设置有水煤气出口和循环水进口；所述的冷却塔底部设置有水煤气进口和循环水出口；所述的循环水出口通过管路a连接废水回收装置；所述的管路a上设置有控制阀门；所述的管路a连接有竖直管路b；所述的管路b上连接有管路c；采用这种结构的塔底液位维持装置，可以使塔内液位保持稳定，不需要操作工紧盯液位，有效防止管路憋压。In order to solve the problem that the liquid level of the cooling tower is difficult to control, the present invention provides a new liquid level maintenance device at the bottom of the tower, which includes sequentially connecting the cooling tower and the waste water recovery device, and the top of the cooling tower is provided with a water gas outlet and circulating water inlet; the bottom of the cooling tower is provided with a water gas inlet and a circulating water outlet; the circulating water outlet is connected to a waste water recovery device through a pipeline a; a control valve is provided on the pipeline a; the pipeline a A vertical pipeline b is connected; the pipeline b is connected with a pipeline c; the liquid level maintenance device at the bottom of the tower with this structure can keep the liquid level in the tower stable, and the operator does not need to keep an eye on the liquid level , Effectively prevent the pipeline from holding pressure.
为了实现上述目的，本发明采取的技术方案如下：In order to achieve the above object, the technical scheme that the present invention takes is as follows:
一种塔底液位维持装置，包括顺次连接冷却塔和废水回收装置，所述的冷却塔顶部设置有水煤气出口和循环水进口；所述的冷却塔底部设置有水煤气进口和循环水出口；所述的循环水出口通过管路a连接废水回收装置；所述的管路a上设置有控制阀门；所述的管路a连接有竖直管路b；所述的竖直管路b的末端为放空口；所述的管路b上连接有管路c；所述的管路c末端为排放口。A liquid level maintenance device at the bottom of the tower, including sequentially connecting a cooling tower and a waste water recovery device, the top of the cooling tower is provided with a water gas outlet and a circulating water inlet; the bottom of the cooling tower is provided with a water gas inlet and a circulating water outlet; The outlet of the circulating water is connected to the wastewater recovery device through the pipeline a; the pipeline a is provided with a control valve; the pipeline a is connected with the vertical pipeline b; the vertical pipeline b is The end is a vent; the pipeline b is connected to a pipeline c; the end of the pipeline c is a discharge port.
使用时，温度较高的水煤气通过冷却塔底部的水煤气进口进入到冷却塔中，When in use, the water gas with a higher temperature enters the cooling tower through the water gas inlet at the bottom of the cooling tower.
经过与从塔顶进入的低温循环水进行接触传热后得到降温，并从塔顶排出进入后续工段。而与之换热后的循环水在塔底会形成一定高度的液位，若液位高于水煤气进口时会造成管路a憋压。经过设计在管路a上的控制阀组之前加设一竖直管路b，另在距管路b底部为5.2m的位置连接一管路c。After contacting with the low-temperature circulating water entering from the top of the tower to transfer heat, the temperature is lowered, and discharged from the top of the tower to enter the subsequent section. The circulating water after heat exchange with it will form a liquid level of a certain height at the bottom of the tower. If the liquid level is higher than the water gas inlet, it will cause the pipeline a to hold pressure. After design, add a vertical pipeline b before the control valve group on pipeline a, and connect a pipeline c at a position 5.2m away from the bottom of pipeline b.
正常生产时进塔水煤气压力在42kpag~52kpag之间，水煤气进口距冷却塔塔底距离h1为1m，为保证当水煤气压力最低时，循环水液柱不会没过水煤气进口则需要将管路c安装的位置h2为During normal production, the pressure of the water and gas entering the tower is between 42kpag and 52kpag, and the distance between the water and gas inlet and the bottom of the cooling tower h1 is 1m. The location of c installation h 2 is
42*103+ρgh1=ρgh2 42*10 3 +ρgh 1 =ρgh 2
其中ρ=1000kg/m³Where ρ=1000kg/m³
g =10N/ kgg =10N/kg
h1=1mh 1 =1m
经过计算得h2=5.2m。After calculation, h 2 =5.2m.
当冷却塔正常工作时，管路a上的控制阀组关闭，管路b与冷却塔底可以连通，此时在管路b中会有一高度为5.2 m的液柱，塔内底部的废水会经过管路c排放出去使塔内液位始终维持在一定的高度。液柱在管路b底部产生的压力会始终维持在52Kpag（p=ρgh2），只要进塔的水煤气压力（进塔水煤气的压力一般为42kpag~52kpag）不高于52Kpag就不会引起塔内气体窜入管路b而引起事故，同时当进塔压力小于52kpag时在塔内液面会维持一定的高度，只要进塔水煤气的压力不低于42Kpag（此时塔内液面为1m）就不会导致水进入管路引起憋压。同时整个装置过程产生的循环水废水可经废水回收装置排出。When the cooling tower is working normally, the control valve group on the pipeline a is closed, and the pipeline b can communicate with the bottom of the cooling tower. At this time, there will be a liquid column with a height of 5.2 m in the pipeline b, and the waste water at the bottom of the tower will flow It is discharged through the pipeline c so that the liquid level in the tower is always maintained at a certain height. The pressure generated by the liquid column at the bottom of pipeline b will always be maintained at 52Kpag (p=ρgh 2 ), as long as the pressure of water gas entering the tower (the pressure of water gas entering the tower is generally 42kpag~52kpag) is not higher than 52Kpag, it will not cause internal The gas escapes into pipeline b to cause an accident. At the same time, when the pressure entering the tower is less than 52kpag, the liquid level in the tower will maintain a certain height. As long as the pressure of the water gas entering the tower is not lower than 42Kpag (at this time, the liquid level in the tower is 1m). It will cause water to enter the pipeline and cause pressure to hold. At the same time, the circulating water waste water generated in the whole process of the device can be discharged through the waste water recovery device.
采用这种结构的塔底液位维持装置，可以使冷却塔塔内液位保持稳定，不需要操作工紧盯液位，有效防止管路憋压，同时也可以将冷却塔塔内气体与外界进行可靠地隔绝，防止安全事故发生。The liquid level maintenance device at the bottom of the tower with this structure can keep the liquid level in the cooling tower stable, and does not require operators to keep an eye on the liquid level, which can effectively prevent pipeline pressure from being suppressed, and at the same time, it can also separate the gas in the cooling tower from the outside world. Carry out reliable isolation to prevent safety accidents from happening.
综上所述，该工艺装置可以使冷却塔塔内液位保持稳定，不需要操作工紧盯液位，有效防止管路憋压，同时也可以将冷却塔塔内气体与外界进行可靠地隔绝，防止安全事故发生。To sum up, this process device can keep the liquid level in the cooling tower stable, without the need for operators to keep an eye on the liquid level, effectively prevent the pipeline from holding pressure, and at the same time can reliably isolate the gas in the cooling tower from the outside world , to prevent safety accidents.
附图说明Description of drawings
图1为本实用新型所述的塔底液位维持装置结构示意图；Fig. 1 is a schematic structural view of the tower bottom liquid level maintenance device described in the utility model;
图中，1为冷却塔，2为废水回收装置，3为水煤气进口，4为水煤气出口，5为循环水进口，6为放空口，7为排放口，8为循环水出口，9为控制阀门；In the figure, 1 is the cooling tower, 2 is the waste water recovery device, 3 is the water gas inlet, 4 is the water gas outlet, 5 is the circulating water inlet, 6 is the air outlet, 7 is the discharge port, 8 is the circulating water outlet, and 9 is the control valve ;
a，b，c均为管路。a, b, c are pipelines.
具体实施方式detailed description
一种塔底液位维持装置，包括顺次连接冷却塔1和废水回收装置2，所述的冷却塔1顶部设置有水煤气出口4和循环水进口5；所述的冷却塔1底部设置有水煤气进口3和循环水出口8；所述的循环水出口8通过管路a连接废水回收装置2；所述的管路a上设置有控制阀门9；所述的管路a连接有竖直管路b；所述的竖直管路b的末端为放空口6；所述的管路b上连接有管路c；所述的管路c末端为排放口7。A liquid level maintenance device at the bottom of the tower, comprising sequentially connecting a cooling tower 1 and a waste water recovery device 2, the top of the cooling tower 1 is provided with a water gas outlet 4 and a circulating water inlet 5; the bottom of the cooling tower 1 is provided with a water gas Inlet 3 and circulating water outlet 8; said circulating water outlet 8 is connected to waste water recovery device 2 through pipeline a; said pipeline a is provided with a control valve 9; said pipeline a is connected with a vertical pipeline b; the end of the vertical pipeline b is the vent 6; the pipeline b is connected to the pipeline c; the end of the pipeline c is the discharge port 7.
实施例1Example 1
使用时，温度较高的水煤气通过冷却塔底部的水煤气进口进入到冷却塔中，When in use, the water gas with a higher temperature enters the cooling tower through the water gas inlet at the bottom of the cooling tower.
经过与从塔顶进入的低温循环水进行接触传热后得到降温，并从塔顶排出进入后续工段。而与之换热后的循环水在塔底会形成一定高度的液位，若液位高于水煤气进口时会造成管路a憋压。经过设计在管路a上的控制阀组之前加设一竖直管路b，另在距管路b底部为5.2m的位置连接一管路c。After contacting with the low-temperature circulating water entering from the top of the tower to transfer heat, the temperature is lowered, and discharged from the top of the tower to enter the subsequent section. The circulating water after heat exchange with it will form a liquid level of a certain height at the bottom of the tower. If the liquid level is higher than the water gas inlet, it will cause the pipeline a to hold pressure. After design, add a vertical pipeline b before the control valve group on pipeline a, and connect a pipeline c at a position 5.2m away from the bottom of pipeline b.
冷却塔正常工作时，管路a上的控制阀组关闭，管路b与冷却塔底可以连通，此时在管路b中会有一高度为5.2米的液柱，塔内底部的废水会经过管路c排放出去使塔内液位始终维持在一定的高度。液柱在管路b底部产生的压力会始终维持在52Kpag，只要进塔的水煤气压力不高于52Kpag就不会引起塔内气体窜入管路b而引起事故，同时当进塔压力小于52kpag时在塔内液面会维持一定的高度，只要进塔水煤气的压力不低于42Kpag（此时塔内液面为1m）就不会导致水进入管路引起憋压。When the cooling tower is working normally, the control valve group on the pipeline a is closed, and the pipeline b can communicate with the bottom of the cooling tower. At this time, there will be a liquid column with a height of 5.2 meters in the pipeline b, and the waste water at the bottom of the tower will pass through Pipeline c is discharged to keep the liquid level in the tower at a certain height. The pressure generated by the liquid column at the bottom of pipeline b will always be maintained at 52Kpag. As long as the pressure of water gas entering the tower is not higher than 52Kpag, the gas in the tower will not escape into pipeline b and cause accidents. At the same time, when the pressure entering the tower is less than 52kpag The liquid level in the tower will maintain a certain height, as long as the pressure of water and gas entering the tower is not lower than 42Kpag (at this time, the liquid level in the tower is 1m), it will not cause water to enter the pipeline and cause pressure suppression.
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| CN201620141105.3U CN205505779U (en) | 2016-02-25 | 2016-02-25 | Liquid level holdout device at bottom of tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106502282A (en) * | 2016-09-27 | 2017-03-15 | 大庆中蓝石化有限公司 | Tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant |
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2016
- 2016-02-25 CN CN201620141105.3U patent/CN205505779U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106502282A (en) * | 2016-09-27 | 2017-03-15 | 大庆中蓝石化有限公司 | Tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant |
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