CN1089019C - Method for stabilizing outlet pressure of pressure changing adsorption vaccuum pump by using air cabinet - Google Patents

Method for stabilizing outlet pressure of pressure changing adsorption vaccuum pump by using air cabinet Download PDF

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Publication number
CN1089019C
CN1089019C CN99116509A CN99116509A CN1089019C CN 1089019 C CN1089019 C CN 1089019C CN 99116509 A CN99116509 A CN 99116509A CN 99116509 A CN99116509 A CN 99116509A CN 1089019 C CN1089019 C CN 1089019C
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China
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gas
gas cabinet
pump outlet
pressure
method
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CN99116509A
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Chinese (zh)
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CN1240153A (en
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蒋远华
杨晓勤
尤大海
何涛
冷静
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湖北宜化集团有限责任公司
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Abstract

本发明公开了一种用气柜稳定变压吸附真空泵出口压力的方法,在真空泵出口到增压设备进口之间串联或并联了一可变动储气容积气柜,气体先进气柜,经气柜稳定压力后,再用罗茨鼓风机等增压设备抽送至用气工段或单位。 The present invention discloses a method for adsorption of a pump outlet pressure of the gas cabinet with stable transformer, in series or parallel vacuum pump outlet to the inlet between a supercharging device can vary the volume of the gas cabinet gas, gas advanced gas cabinet, the gas cabinet after the pressure is stabilized, and then pressurized Roots blower to the gas pumping station equipment or units. 本发明使真空泵出口压力稳定,工作噪音减少,操作稳定,保证了产品质量。 The present invention enables the vacuum pump outlet pressure stable, reducing noise, stable operation, ensuring product quality.

Description

用气柜稳定变压吸附真空泵出口压力的方法 Suction pump outlet pressure gas tank with a pressure swing method for stabilizing

本发明涉及一种用气柜稳定变压吸附真空泵出口压力的方法,特别是涉及一种采用可变容气柜稳定变压吸附真空泵出口压力的方法。 The present invention relates to a vacuum suction outlet pressure swing gas cabinet stable, particularly to a method for stabilizing the gas cabinet variable capacity pump outlet pressure swing adsorption uses.

在以易吸附相为产品气体的变压吸附分离过程中,要将真空泵从吸附塔内抽出的产品气送到后工段或单位使用(CN1195572)。 In order to readily adsorbable phase separation process is a pressure swing adsorption gas product after vacuum want extracted from the adsorption column product gas station or unit to use (CN1195572). 传统的方法是真空泵出口的气体先进一气水分离器和一缓冲罐,然后再用罗茨鼓风机等增压设备送出去,由于真空泵与增压设备工作性能的固有不匹配,使真空泵出口的压力波动非常大,引起真空泵和增压设备电负荷波动大且经常超负荷,产生很大的噪音,使用寿命缩短;以送出的气体作原料的生产工段负荷也处于波动之中,生产不稳不易操作,产品质量和生产设备都受到威胁。 The traditional method is the vacuum pump outlet gas advanced stretch water separator and a surge tank, and then use the Roots blower supercharging device sent out due to the inherent mismatch performance of the supercharging device and the vacuum pump, the vacuum pump outlet pressure fluctuations It is very large, causing a vacuum pump and pressurization apparatus electrical load variation and often overloaded, resulting in a lot of noise, shorten the service life; to feed gas production section for load fluctuations in raw material also in production unstable and difficult to operate, product quality and production facilities are threatened. 为解决这一问题使用定容设备只能将气水分离器和缓冲罐做得相当大,以使压力曲线平滑,投资相当大,效果不理想。 To solve this problem using a constant volume device can only be gas-water separator tank and the buffer made relatively large, so that the pressure curve is smooth, a large investment, are not ideal.

本发明的目的就是提供一种投资省、输出压力稳定、生产噪音小的用气柜稳定变压吸附真空泵出口压力的方法。 Object of the present invention is to provide a low investment, stable output pressure, pump outlet pressure of the adsorption method of producing noise with a small stable pressure swing gas cabinet.

本发明的目的是这样实现的:一种用气柜稳定变压吸附真空泵出口压力的方法,真空泵出口的气体先进可变容气柜,经气柜稳定压力后,再用罗茨鼓风机等增压设备抽送至用气工段单位,在流程中上设有气体回路控制气柜高度。 Object of the present invention is implemented as follows: A method of vacuum pump outlet pressure steady pressure swing adsorption gas tank, a gas pump outlet art variable displacement gas cabinet, after stable pressure gas cabinet, then Roots blower supercharger gas pumping equipment to the unit section, in the process gas is provided on the control circuit the gas cabinet height. 可变容气柜上设置防抽瘪装置和高限自动放空装置;气柜的型式为直升式或螺旋式;气柜的容积为30-10000m3。 A variable capacity gas cabinet and a means is provided preventing a deflated upper limit automatic venting means; gas cabinet is a helicopter type or screw; is the volume of the gas cabinet 30-10000m3.

本发明提供的用气柜稳定变压吸附真空泵出口压力的方法,由于在真空泵出口与用气单位进口之间串联或并联一可变容气柜,真空泵出来的气体可用气柜稳定压力,使真空泵出口压力波动减少,真空泵和增压设备电负荷波动减少且负荷减轻,产生的噪音降低,延长了真空泵的使用寿命;采用可变容气柜的形式,使气柜体积可比原使用的水气分离器和缓冲罐体积小很多,减少了投资;在流程中设置的气体回路控制装置及防抽瘪装置保证了气柜的正常运行。 The method of adsorption pump outlet pressure swing gas cabinet stability provided by the present invention, since the vacuum pump outlet and between the gas inlet unit in series or parallel with a variable volume gas tank, pump gas out of the gas cabinet available stable pressure, the vacuum pump outlet pressure fluctuations is reduced, and the booster pump apparatus to reduce the electrical load fluctuations and reduce the load, the noise generated is reduced, extending the life of the vacuum pump; using a variable volume in the form of the gas cabinet, the water-gas separation than the original volume of the gas cabinet in use and buffer tank volume is much smaller, reducing the investment; disposed in the gas flow control device and circuit means preventing deflated ensure the normal operation of the gas cabinet.

下面结合附图和实施例对本发明作进一步说明。 The present invention is further described below in conjunction with the accompanying drawings and embodiments.

图1是本发明的一种实施例。 FIG 1 is an embodiment of the present invention.

图2是本发明的另一种实施例。 FIG 2 is another embodiment of the present invention.

本发明提供的用气柜稳定变压吸附真空泵出口压力的方法,工作时真空泵从吸附塔抽出的高纯易吸附相气体进入可变容气柜,经可变容气柜后再用罗茨鼓风机等增压设备送入后工段或单位。 The method of adsorption pump outlet pressure swing gas cabinet according to the present invention provides a stable, variable displacement pump into the gas cabinet withdrawn from the adsorption column, high purity more readily adsorbable gas phase operation, the variable-volume gas tank before use by Roots blower, pressure will be fed to the stage or unit. 在真空泵抽气前期,真空泵送出的气体量多于罗茨鼓风机能转送的能力,此时可变容气柜上升,容积增大以使压力不升高;在真空泵抽气后期,吸附塔内气体越来越少,真空泵送出的气体量少于罗茨鼓风机的抽送能力,此时气柜下降,容积减小以使压力不下降。 In the pre-vacuum pump, the amount of gas fed is greater than the vacuum pump can transfer capability Roots blower, in which case the variable volume gas tank rises, the volume is increased so that the pressure does not rise; the latter part of the vacuum pump suction, gas in the adsorption tower fewer, less vacuum pump for pumping gas out Roots blower capacity, decreased gas cabinet case, the volume is reduced so that the pressure does not drop. 这样循环往复,利用气柜升降变动储气容积使真空示出口压力达到了稳定,带来设备运行和生产状况稳定,噪音大大减小。 In this way the cycle, the use of gas lift cabinet changes in the volume of vacuum gas outlet pressure is shown to achieve a stable, bringing equipment operation and production status stable, noise is greatly reduced.

本发明的气柜容器为30-10000m3。 Gas holder container of the invention is 30-10000m3.

本发明的可变容气柜上设置的防抽瘪装置7和高限自动放空装置8可在气柜内压力过低或过高时补充气体或放空气体,以保证气柜工作安全。 A variable capacity gas cabinet according to the invention provided prevention deflated device 7 and the upper limit of the automatic venting device 8 can be supplemented when the gas pressure is too low or too high cabinet air or gas vent, the gas cabinet to ensure work safety.

本发明通过设置气体回路来控制气柜在正常波动范围内升降,当气柜降至设计低限时,开大气体回路向气柜回气,以使气柜升高到正常范围。 The present invention is to control the gas cabinet is provided by a gas lift loop within the normal fluctuation range, when the gas cabinet design reduced to the lower limit, a large open loop gas return air to the gas cabinet, to the cabinet so that the gas rises to the normal range.

图1表示了本发明的一种实施例,可变容气柜1采用并联的方法连接。 1 shows an embodiment of the present invention, the method uses variable capacity gas tank 1 is connected in parallel. 真空泵2抽出吸附塔3内的CO2气体,平均流量148.5Nm3/min,经过120m3的气水分离器4后分别进入100m3气柜ml和90m3缓冲罐5,出来的气体进入罗茨鼓风机6送到CO2压缩机加压后生产尿素,测得真空泵2出口压力稳定在2.95-3.2KPa之间。 2 CO2 pump out the gas in the adsorption tower 3, the average flow 148.5Nm3 / min, through a gas-water separator respectively to 120m3 100m3 90m3 gas tank and the buffer tank 5 ml 4, out of the gas into the roots blower 6 to CO2 after the production of urea pressurized compressor, a vacuum pump 2 measured outlet pressure stabilized at 2.95-3.2KPa.

图2表示的是本发明的另一种实施例,可变容气柜1采用串联方式连接。 Figure 2 shows another embodiment of the present invention, a variable volume gas tank 1 connected in series. 真空泵2从吸附塔3抽出的CO2气体,平均流量270Nm3/min,经过500m3的气柜1后进入罗茨鼓风机6,测得真空泵2出口压力稳定在2.95-3.05KPa之间。 The vacuum pump 2 from the adsorption column 3 is withdrawn CO2 gas, average flow rate of 270Nm3 / min, through a gas cabinet 1 backward 500m3 Ruluo Ci blower 6, the vacuum pump 2 measured outlet pressure stabilized at 2.95-3.05KPa.

Claims (4)

1.一种用气柜稳定变压吸附真空泵出口压力的方法,其特征在于真空泵出口的气体先进可变容气柜,经气柜稳定压力后,再用增压设备抽送至用气工段或单位,在流程中设有气体回路控制气柜高度。 CLAIMS 1. A method of stabilizing pressure swing adsorption pump outlet pressure gas cabinet, wherein the gas pump outlet art variable displacement gas cabinet, after stable pressure gas tank, and then pumped to the gas pressurization device or unit section , a gas control loop in the process gas cabinet height.
2.根据权利要求1所述的用气柜稳定变压吸附真空泵出口压力的方法,其特征在于可变容气柜上设置防抽瘪装置和高限自动放空装置; The gas cabinet according to claim 1 A method of stabilizing suction pump outlet pressure swing, wherein the gas cabinet is provided a variable capacitance device and the anti-high-limit deflated automatic venting means;
3.根据权利要求1或2所述用气柜稳定变压吸附真空泵出口压力的方法,其特征在于气柜的型式为直升式或螺旋式。 3. The method of adsorption pump outlet pressure steady pressure swing gas cabinet according to claim 1 or claim 2, wherein the gas cabinet is a helicopter type or screw.
4.根据权利要求1或2所述的用气柜稳定变压吸附真空泵出口压力的方法,其特征在于气柜的容积为30-10000m3。 4. A method of stabilizing pressure swing adsorption pump outlet pressure gas cabinet according to claim 1 or claim 2, characterized in that the volume of the gas cabinet is 30-10000m3.
CN99116509A 1999-06-05 1999-06-05 Method for stabilizing outlet pressure of pressure changing adsorption vaccuum pump by using air cabinet CN1089019C (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03127605A (en) * 1989-10-13 1991-05-30 Mitsubishi Petrochem Eng Co Ltd Method and device for pressure-regulating, straightening and homogenizing cyclic gas current
WO1998029182A1 (en) * 1996-12-31 1998-07-09 Keefer Bowie High frequency pressure swing adsorption
CN1195572A (en) * 1998-01-24 1998-10-14 伍仁兴 Pressure swing adsorption gas separation method capable of simultaneously purifying adsorbable phase and non-adsorbable phase from mixed gas

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03127605A (en) * 1989-10-13 1991-05-30 Mitsubishi Petrochem Eng Co Ltd Method and device for pressure-regulating, straightening and homogenizing cyclic gas current
WO1998029182A1 (en) * 1996-12-31 1998-07-09 Keefer Bowie High frequency pressure swing adsorption
CN1195572A (en) * 1998-01-24 1998-10-14 伍仁兴 Pressure swing adsorption gas separation method capable of simultaneously purifying adsorbable phase and non-adsorbable phase from mixed gas

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Assignee: Hubei Chuxing Chemical Co., Ltd.

Assignor: Yihua Group Co., Ltd., Hubei Prov.

Contract fulfillment period: 2009.3.17 to 2019.3.16 contract change

Contract record no.: 2009420000016

Denomination of invention: Method for stabilizing outlet pressure of pressure changing adsorption vacuum pump by using air cabinet

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Record date: 2009.5.6

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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.17 TO 2019.3.16; CHANGE OF CONTRACT

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