阅读说明：本技术 一种用于pta生产工艺中的精制氢气回收装置 (Refined hydrogen recovery device for PTA production process ) 是由 潘政伟 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种用于PTA生产工艺中的精制氢气回收装置,通过设置有PTA反应主体、气体降温机构、水分分离机构、氢气回收机构和集气罐,所述PTA反应主体、气体降温机构、水分分离机构、氢气回收机构和集气罐构成一个循环,所述气体降温机构通过气体降温管对PTA反应主体输出的氢气进行降温处理,所述水分分离机构通过内部的冷凝机构,将氢气中的水分消除,所述氢气回收机构将氢气收集回收输送进集气罐中,集气罐中得到的氢气没有水分,适合使用者使用,通过设置净化机构,净化机构设置的净化箱内设置有净化件一和净化件二,通过净化件一和净化件二,将氢气中的水分进行更一步的吸收,确保水分的消除。(The invention discloses a refined hydrogen recovery device used in PTA production process, which is provided with a PTA reaction main body, a gas cooling mechanism, a moisture separation mechanism, a hydrogen recovery mechanism and a gas collection tank, wherein the PTA reaction main body, the gas cooling mechanism, the moisture separation mechanism, the hydrogen recovery mechanism and the gas collection tank form a cycle, the gas cooling mechanism carries out cooling treatment on hydrogen output by the PTA reaction main body through a gas cooling pipe, the moisture separation mechanism eliminates moisture in the hydrogen through an internal condensation mechanism, the hydrogen recovery mechanism collects and recovers the hydrogen and conveys the hydrogen into the gas collection tank, the hydrogen obtained in the gas collection tank has no moisture and is suitable for users to use, and through the arrangement of the purification mechanism, a first purification piece and a second purification piece are arranged in a purification box arranged in the purification mechanism, and moisture in the hydrogen is further absorbed through the first purification piece and the second piece, ensuring the elimination of moisture.)

1. A refined hydrogen recovery device for a PTA production process comprises a PTA reaction main body (1) and is characterized in that the PTA reaction main body (1) is connected with a gas cooling mechanism (5) through a connecting pipe (13), the gas cooling mechanism (5) is connected with a moisture separation mechanism (7) through the connecting pipe (13), the moisture separation mechanism (7) is connected with a hydrogen recovery mechanism (11) through the connecting pipe (13), the hydrogen recovery mechanism (11) is connected with a gas collection tank (14) through the connecting pipe (13), the gas collection tank (14) is connected with the PTA reaction main body (1) through the connecting pipe (13), a first control valve (4) is arranged on the connecting pipe (13) between the PTA reaction main body (1) and the gas cooling mechanism (5), a second control valve (6) is arranged on the connecting pipe (13) between the gas cooling mechanism (5) and the moisture separation mechanism (7), a third control valve (10) is arranged on a connecting pipe (13) between the moisture separation mechanism (7) and the hydrogen recovery mechanism (11), a fourth control valve (12) is arranged on the connecting pipe (13) between the hydrogen recovery mechanism (11) and the gas collection tank (14), and a fifth control valve (2) is arranged on the connecting pipe (13) between the gas collection tank (14) and the PTA reaction main body (1).

2. The refined hydrogen recovery device used in PTA production process according to claim 1, wherein the gas cooling mechanism (5) comprises a gas cooling main body (19), the gas cooling main body (19) is provided with a gas inlet I (17), a gas outlet I (21), a water inlet (18) and a water outlet (22), the gas inlet I (17) and the gas outlet I (21) are both connected with the connecting pipe (13), the gas cooling main body (19) is provided with a gas cooling pipe (20), and the gas cooling pipe (20) is connected with an external water source through the water inlet (18).

3. The refined hydrogen recovery device used in PTA production process according to claim 1, wherein the moisture separation mechanism (7) comprises a moisture separation main body, the moisture separation main body is provided with a second air inlet (23) and a second air outlet (31), both the second air inlet (23) and the second air outlet (31) are connected with the connecting pipe (13), the moisture separation main body is provided with a plurality of condensation mechanisms, the lower end of the moisture separation main body is provided with a water outlet (33), the water outlet (33) is provided with a control valve six (34), the moisture separation main body is further provided with a water level display ruler (32), the water level display ruler (32) is arranged at the lower end of the moisture separation main body, the moisture separation main body is further provided with a humidity sensing mechanism, and the moisture separation main body is further provided with an air circulation port (26), the gas circulation port (26) is connected with the second gas inlet (23) through a connecting pipe (13), and a seventh control valve (24) and an eighth control valve (25) are arranged on the connecting pipe (13) between the gas circulation port (26) and the second gas inlet (23).

4. The refined hydrogen recovery device used in the PTA production process of claim 3, wherein the number of the condensing mechanism is three, the condensing mechanism comprises a condensing plate (28) and a condensing pipe (27), the condensing plate (28) is fixedly connected with the moisture separation main body, and the condensing pipe (27) is arranged in the condensing plate (28).

5. The refined hydrogen recovery device used in the PTA production process as claimed in claim 3, wherein the humidity sensing mechanism comprises a humidity sensor (29) and a humidity display (30), the humidity sensor (29) is disposed in the moisture separation main body, and the humidity display (30) is disposed outside the moisture separation main body and is fixedly connected with the humidity sensor (29).

6. The refined hydrogen recovery device used in PTA production process according to claim 1, wherein said hydrogen recovery means (11) recovers hydrogen using a membrane separation method.

7. The refined hydrogen recovery device used in PTA production process according to claim 1, wherein the connecting pipe (13) arranged between the hydrogen recovery mechanism (11) and the gas collecting tank (14) is provided with a gas suction device (16), and the gas suction device (16) is a gas suction pump.

8. The refined hydrogen recovery device used in PTA production process in accordance with claim 1, wherein one end of the gas collection tank (14) is connected with the hydrogen recovery mechanism (11), the other end is connected with the PTA reaction main body (1), and the gas collection tank (14) is provided with a gas outlet four (15).

9. The refined hydrogen recovery device used in the PTA production process according to claim 1, wherein a purification mechanism (9) is arranged between the moisture separation mechanism (7) and the hydrogen recovery mechanism (11), a control valve nine is arranged on a connecting pipe (13) connecting the purification mechanism (9) and the moisture separation mechanism (7), the purification mechanism (9) comprises a purification box (36), an air inlet III (35) and an air outlet III (39) are arranged on the purification box (36), the air inlet III (35) and the air outlet III (39) are both connected with the connecting pipe (13), and a first purification piece (37) and a second purification piece (38) are arranged in the purification box (36).

10. The refined hydrogen recovery device used in PTA production process of claim 9, wherein said first purification member (37) is diatomite layer and said second purification member (38) is activated carbon layer.

Technical Field

The invention relates to PTA production equipment, in particular to a refined hydrogen recovery device used in a PTA production process.

Background

In the PTA production process, in order to ensure that 4-CBA and other colored impurities are effectively removed in a hydrogenation reactor, the adding amount of hydrogen is seriously excessive, about 85 percent of hydrogen enters a downstream crystallizer along with slurry after coming into reaction, and then is discharged at high altitude along with flash steam and other non-condensable gases during crystallization flash evaporation, thereby causing great resource waste.

The existing PTA production equipment generally has a hydrogen recovery device, but the existing hydrogen recovery device can not effectively eliminate the moisture doped in the hydrogen, so that a recovery device which can effectively eliminate the moisture in the hydrogen recovery process is urgently needed.

Disclosure of Invention

The invention aims to provide a refined hydrogen recovery device for a PTA production process, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a refined hydrogen recovery device used in a PTA production process comprises a PTA reaction main body, wherein the PTA reaction main body is connected with a gas cooling mechanism through a connecting pipe, the gas cooling mechanism is connected with a moisture separation mechanism through a connecting pipe, the moisture separation mechanism is connected with a hydrogen recovery mechanism through a connecting pipe, the hydrogen recovery mechanism is connected with a gas collection tank through a connecting pipe, the gas collection tank is connected with the PTA reaction main body through a connecting pipe, a first control valve is arranged on the connecting pipe between the PTA reaction main body and the gas cooling mechanism, a second control valve is arranged on the connecting pipe between the gas cooling mechanism and the moisture separation mechanism, a third control valve is arranged on the connecting pipe between the moisture separation mechanism and the hydrogen recovery mechanism, a fourth control valve is arranged on the connecting pipe between the hydrogen recovery mechanism and the gas collection tank, and a fifth control valve is arranged on a connecting pipe between the gas collection tank and the PTA reaction main body.

As a further scheme of the invention: the gas cooling mechanism comprises a gas cooling main body, wherein a first gas inlet, a first gas outlet, a water inlet and a water outlet are formed in the gas cooling main body, the first gas inlet and the first gas outlet are connected with a connecting pipe, a gas cooling pipe is arranged in the gas cooling main body, and the gas cooling pipe is connected with an external water source through the water inlet.

As a still further scheme of the invention: the moisture separation mechanism comprises a moisture separation main body, wherein a second air inlet and a second air outlet are arranged on the moisture separation main body, the second air inlet and the second air outlet are connected with a connecting pipe, a plurality of condensation mechanisms are arranged in the moisture separation main body, a water outlet is formed in the lower end of the moisture separation main body, a control valve six is arranged on the water outlet, a water level display ruler is further arranged on the moisture separation main body, the water level display ruler is arranged at the lower end of the moisture separation main body, a humidity induction mechanism is further arranged in the moisture separation main body, a gas circulation port is further arranged on the moisture separation main body, the gas circulation port and the second air inlet are connected through the connecting pipe, and a seventh control valve and an eighth control valve are arranged on the connecting pipe between the gas.

As a still further scheme of the invention: the quantity of condensation mechanism is three, condensation mechanism includes condensing plate and condenser pipe, condensing plate and moisture separation main part fixed connection, the condenser pipe sets up in the condensing plate.

As a still further scheme of the invention: humidity response mechanism includes humidity inductor and humidity display, humidity inductor sets up in the moisture separation main part, humidity display sets up in the moisture separation main part outside, and with humidity inductor fixed connection.

As a still further scheme of the invention: the hydrogen recovery mechanism recovers hydrogen by adopting a membrane separation method.

As a still further scheme of the invention: and a connecting pipe arranged between the hydrogen recovery mechanism and the gas collecting tank is provided with a gas suction device, and the gas suction device is a gas suction pump.

As a still further scheme of the invention: one end of the gas collection tank is connected with the hydrogen recovery mechanism, the other end of the gas collection tank is connected with the PTA reaction main body, and a gas outlet IV is formed in the gas collection tank.

As a still further scheme of the invention: the hydrogen recovery device is characterized in that a purification mechanism is arranged between the moisture separation mechanism and the hydrogen recovery mechanism, a control valve nine is arranged on a connecting pipe for connecting the purification mechanism and the moisture separation mechanism, the purification mechanism comprises a purification box, a third air inlet and a third air outlet are arranged on the purification box, the third air inlet and the third air outlet are both connected with the connecting pipe, and a first purification piece and a second purification piece are arranged in the purification box.

As a still further scheme of the invention: the first purification part is a diatomite layer, the second purification part is an activated carbon layer, the first purification part is a diatomite layer, and the second purification part is an activated carbon layer.

Compared with the prior art, the invention has the beneficial effects that: through being provided with PTA reaction main part, gaseous cooling mechanism, moisture separating mechanism, hydrogen recovery mechanism and gas collection tank, PTA reaction main part, gaseous cooling mechanism, moisture separating mechanism, hydrogen recovery mechanism and gas collection tank constitute a circulation, gaseous cooling mechanism carries out the cooling process through the hydrogen of gaseous cooling pipe to PTA reaction main part output, moisture separating mechanism eliminates the moisture in the hydrogen through inside condensation mechanism, hydrogen recovery mechanism collects hydrogen and retrieves and conveys into the gas collection tank, and the hydrogen that obtains in the gas collection tank does not have moisture, is fit for the user to use, through setting up purification mechanism, is provided with in the purifying box that purification mechanism set up and purifies a and a second, through purifying a first and purifying a second, carries out further absorption with the moisture in the hydrogen, ensures the elimination of moisture.

Drawings

FIG. 1 is a schematic diagram of a refined hydrogen recovery unit for use in a PTA production process.

Fig. 2 is a schematic view of a gas temperature reduction mechanism in a refined hydrogen recovery unit for use in the PTA production process.

Fig. 3 is a schematic view of a moisture separation mechanism in a refined hydrogen recovery unit used in the PTA production process.

Fig. 4 is a schematic view of a purification mechanism in a refined hydrogen recovery unit used in the PTA production process.

In the figure: 1-PTA reaction main body, 2-control valve five, 4-control valve one, 5-gas cooling mechanism, 6-control valve two, 7-moisture separation mechanism, 8-control valve ten, 9-purification mechanism, 10-control valve three, 11-hydrogen recovery mechanism, 12-control valve four, 13-connecting pipe, 14-gas collecting tank, 15-gas outlet four, 16-gas suction device, 17-gas inlet one, 18-water inlet, 19-gas cooling main body 1, 20-gas cooling pipe, 21-gas outlet one, 22-water outlet, 23-gas inlet two, 24-control valve seven, 25-control valve eight, 26-gas circulation port, 27-condenser pipe, 28-condensing plate, 29-humidity sensor, 30-humidity display, 31-air outlet II, 32-water level display ruler, 33-water outlet, 34-control valve VI, 35-air inlet III, 36-purifying box, 37-purifying piece I, 38-purifying piece II and 39-air outlet III.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to specific embodiments.