Vacuum replacement device for adding catalyst into dialkyl tertiary amine

Abstract

The utility model provides a dialkyl tertiary amine catalyst vacuum replacement device which comprises a vacuum replacement tank, a feeding pipe is integrally connected to an opening in the upper middle side of the vacuum replacement tank, and a feeding valve is fixedly connected to the upper end of the feeding pipe; a discharging pipe is integrally connected to an opening in the lower middle side of the vacuum replacement tank, and a discharging valve is fixedly connected to the lower end of the discharging pipe. A pressure sensor is in threaded connection with an opening in the middle front part of the upper side of the vacuum replacement tank; and a nitrogen input pipe is longitudinally and integrally connected to an opening in the middle left part of the upper side of the vacuum replacement tank. Through the arrangement of the exhaust pipe, the exhaust valve, the material storage box, the vacuumizing pipe, the discharging pipe, the discharging valve, the conical pipe and the L-shaped connecting pipe, the effect of conveniently sucking air at the bottom of the inner side of the replacement tank is achieved, and therefore the problem that oxygen accumulated at the bottom of the inner side of the replacement tank is difficult to clean up can be effectively solved; and the vacuum replacement effect can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum replacement, in particular to a vacuum replacement device for dialkyl tertiary amine plus catalyst. Background Art

[0002] A vacuum replacement device for dialkyl tertiary amine plus catalyst is a device that can replace the oxygen in a container and a pipeline to a level below the explosion limit, thereby preventing the problem of mixing the crude synthesis gas generated during feeding with oxygen. For example, the vacuum replacement device for tallow amine polyoxyethylene ether reaction plus catalyst with publication number CN217989237U comprises a vacuum replacement tank, a nitrogen inlet pipe, a vacuum replacement tank vacuum pipe, and a vacuum replacement tank pressure relief pipe are arranged above the vacuum replacement tank, and a vacuum replacement tank outlet is arranged below the vacuum replacement tank. There are still some problems with the vacuum replacement device during actual use, such as: since the density of nitrogen is greater than that of oxygen, when nitrogen is filled into the replacement tank, the nitrogen will float on the upper side of the interior of the replacement tank, while the oxygen will accumulate at the inner bottom of the replacement tank. Since the vacuum pipe is arranged on the upper side of the replacement tank, when the replacement tank is vacuumed, the oxygen at the inner bottom of the replacement tank is difficult to be cleaned up, thereby greatly affecting the effect of vacuum replacement. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the utility model provides a dialkyl tertiary amine plus catalyst vacuum replacement device, which can achieve the effect of facilitating the absorption of air at the inner bottom of the replacement tank, thereby effectively avoiding the problem that the oxygen accumulated at the inner bottom of the replacement tank is difficult to clean up, and further effectively improving the vacuum replacement effect.

[0004] The technical scheme is as follows: a dialkyl tertiary amine plus catalyst vacuum replacement device, comprising a vacuum replacement tank, a feed pipe is integrally connected to the middle upper opening of the vacuum replacement tank, and the upper end of the feed pipe is fixedly connected to the feed valve; a discharge pipe is integrally connected to the middle lower opening of the vacuum replacement tank, and the lower end of the discharge pipe is fixedly connected to the discharge valve; a pressure sensor is threadedly connected to the middle front opening of the upper side of the vacuum replacement tank; a nitrogen input pipe is longitudinally integrally connected to the middle left opening of the upper side of the vacuum replacement tank, and the upper end of the nitrogen input pipe is fixedly connected to the nitrogen input valve; a pressure relief pipe is longitudinally integrally connected to the middle right opening of the upper side of the vacuum replacement tank, and the upper end of the pressure relief pipe is fixedly connected to the pressure relief valve, characterized in that an exhaust pipe is integrally connected to the lower left opening of the discharge pipe, and the left end of the exhaust pipe is fixedly connected to the exhaust valve, wherein the left end of the exhaust valve is fixedly connected to a storage type vacuum pumping component.

[0005] Preferably, the material storage type vacuum assembly includes a material storage box, which is integrally connected to a vacuum tube at the left opening on the upper part of the material storage box; a discharge pipe is integrally connected to the left opening in the middle of the lower part of the material storage box, and a discharge valve is fixedly connected to the lower end of the discharge pipe; a conical tube is integrally connected to the right opening in the middle of the inner bottom of the material storage box, and an L-shaped connecting tube is integrally connected to the upper opening on the inner side of the conical tube.

[0006] Compared with the prior art, the beneficial effects of the utility model are:

[0007] In the utility model, the arrangement of the exhaust pipe, the exhaust valve, the material storage box, the vacuum pipe, the discharge pipe, the discharge valve, the tapered pipe and the L-shaped connecting pipe is conducive to achieving the effect of facilitating the absorption of the air at the inner bottom of the displacement tank, thereby effectively avoiding the problem that the oxygen accumulated at the inner bottom of the displacement tank is difficult to be cleaned up, and further effectively improving the vacuum replacement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model.

[0009] Figure 2 It is a partial cross-sectional schematic diagram of the material storage type vacuum pumping component of the utility model.

[0010] Figure 3 It is a partially enlarged cross-sectional schematic diagram of the material storage type vacuum pumping component of the utility model.

[0011] In the figure:

[0012] 1. Vacuum displacement tank; 2. Feed pipe; 3. Feed valve; 4. Discharge pipe; 5. Discharge valve; 6. Air extraction pipe; 7. Air extraction valve; 8. Pressure sensor; 9. Nitrogen input pipe; 10. Nitrogen input valve; 11. Pressure relief pipe; 12. Pressure relief valve; 13. Storage type vacuum pumping assembly; 131. Storage box; 132. Vacuum pumping pipe; 133. Discharge pipe; 134. Discharge valve; 135. Conical pipe; 136. L-type connecting pipe. DETAILED DESCRIPTION

[0013] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1As shown, a vacuum replacement device for dialkyl tertiary amine plus catalyst comprises a vacuum replacement tank 1, wherein a feed pipe 2 is integrally connected to the middle upper opening of the vacuum replacement tank 1, and a feed valve 3 is fixedly connected to the upper end of the feed pipe 2; a discharge pipe 4 is integrally connected to the middle lower opening of the vacuum replacement tank 1, and a discharge valve 5 is fixedly connected to the lower end of the discharge pipe 4; a pressure sensor 8 is threadedly connected to the middle front opening of the upper side of the vacuum replacement tank 1; a nitrogen input pipe 9 is longitudinally integrally connected to the middle left opening of the upper side of the vacuum replacement tank 1, and a nitrogen input valve 10 is fixedly connected to the upper end of the nitrogen input pipe 9; a pressure relief pipe 11 is longitudinally integrally connected to the middle right opening of the upper side of the vacuum replacement tank 1, and a pressure relief valve 12 is fixedly connected to the upper end of the pressure relief pipe 11; an exhaust pipe 6 is integrally connected to the lower left opening of the discharge pipe 4, and an exhaust valve 7 is fixedly connected to the left end of the exhaust pipe 6.

[0014] One of the dialkyl tertiary amine plus catalyst vacuum replacement devices also includes a storage type vacuum pumping component 13, and the storage type vacuum pumping component 13 is fixedly connected to the left end of the exhaust valve 7, which is conducive to facilitating the absorption of air at the bottom of the inner side of the replacement tank, thereby effectively avoiding the problem of oxygen accumulated at the bottom of the inner side of the replacement tank being difficult to clean up, thereby effectively improving the vacuum replacement effect.

[0015] In this embodiment, combined with the Figure 2 and attached Figure 3 As shown, the material storage type vacuum assembly 13 includes a material storage box 131, and a vacuum pipe 132 is integrally connected to the left opening of the upper part of the material storage box 131; a discharge pipe 133 is integrally connected to the left opening in the middle of the lower part of the material storage box 131, and a discharge valve 134 is fixedly connected to the lower end of the discharge pipe 133; a conical tube 135 is integrally connected to the right opening in the middle of the inner bottom of the material storage box 131, and an L-shaped connecting tube 136 is integrally connected to the inner upper opening of the conical tube 135.

[0016] In this embodiment, specifically, the right end of the L-shaped connecting pipe 136 is fixedly connected to the left end of the air extraction valve 7 .

[0017] In this embodiment, specifically, the storage box 131 is a stainless steel box with a circular cross-section.

[0018] In this embodiment, specifically, the tapered tube 135 is a tapered stainless steel tube.

[0019] In this embodiment, specifically, the upper end of the vacuum tube 132 is connected to the input end pipeline of the external vacuum pump, and the vacuum pump is electrically connected to the external control panel.

[0020] In the present embodiment, specifically, the feed valve 3, the discharge valve 5, the air extraction valve 7, the nitrogen input valve 10 and the pressure relief valve 12 are respectively solenoid valves, and the feed valve 3, the discharge valve 5, the air extraction valve 7, the nitrogen input valve 10 and the pressure relief valve 12 are respectively electrically connected to an external control panel.

[0021] In this embodiment, specifically, the pressure sensor 8 is electrically connected to an external control panel.

[0022] In this embodiment, when performing vacuum replacement, the operator can control the opening of the air extraction valve 7 through the external control panel, and control the start of the external vacuum pump. At this time, the vacuum pump will absorb the air inside the storage box 131 through the pipeline and the vacuum pipe 132, and the inside of the storage box 131 will generate negative pressure. Then the storage box 131 will absorb the air in the discharge pipe 4 through the tapered pipe 135, the L-shaped connecting pipe 136, the air extraction valve 7 and the air extraction pipe 6. Then the oxygen accumulated at the bottom of the inner side of the vacuum replacement tank 1 is sucked out. In the process of removing oxygen, the residual catalyst in the discharge pipe 4 will be discharged along with the oxygen. When oxygen and the catalyst enter the storage box 131 together through the L-shaped connecting pipe 136, due to the large cross-sectional area of ​​the storage box 131, the catalyst will fall to the inner bottom of the storage box 131, and the oxygen will be moved out from the inside of the storage box 131 through the vacuum pipe 132, thereby achieving the effect of material-gas separation. Since the replacement device can absorb the air at the inner bottom of the vacuum replacement tank 1, it can effectively avoid the problem that the oxygen accumulated at the inner bottom of the replacement tank is difficult to be cleaned up, and then the vacuum replacement effect can be effectively improved, and the effect of facilitating the absorption of the air at the inner bottom of the replacement tank is achieved.

[0023] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A dialkyl tertiary amine plus catalyst vacuum replacement device, comprising a vacuum replacement tank (1), wherein a feed pipe (2) is integrally connected to the middle upper opening of the vacuum replacement tank (1), and a feed valve (3) is fixedly connected to the upper end of the feed pipe (2); a discharge pipe (4) is integrally connected to the middle lower opening of the vacuum replacement tank (1), and a discharge valve (5) is fixedly connected to the lower end of the discharge pipe (4); a pressure sensor (8) is threadedly connected to the middle front opening of the upper side of the vacuum replacement tank (1); a nitrogen input pipe (9) is longitudinally integrally connected to the middle left opening of the upper side of the vacuum replacement tank (1), and a nitrogen input valve (10) is fixedly connected to the upper end of the nitrogen input pipe (9); a pressure relief pipe (11) is longitudinally integrally connected to the middle right opening of the upper side of the vacuum replacement tank (1), and a pressure relief valve (12) is fixedly connected to the upper end of the pressure relief pipe (11), characterized in that: The lower left opening of the discharge pipe (4) is integrally connected with an exhaust pipe (6), and the left end of the exhaust pipe (6) is fixedly connected with an exhaust valve (7), wherein the left end of the exhaust valve (7) is fixedly connected with a storage type vacuum pumping component (13).

2. The dialkyl tertiary amine plus catalyst vacuum replacement device according to claim 1, characterized in that: The material storage type vacuum pumping assembly (13) comprises a material storage box (131), wherein a vacuum pumping tube (132) is integrally connected to the left opening of the upper part of the material storage box (131); a discharge pipe (133) is integrally connected to the left opening of the lower part of the material storage box (131), and a discharge valve (134) is fixedly connected to the lower end of the discharge pipe (133); a conical tube (135) is integrally connected to the right opening of the inner bottom of the material storage box (131), and an L-shaped connecting tube (136) is integrally connected to the inner upper opening of the conical tube (135).

3. The dialkyl tertiary amine plus catalyst vacuum replacement device as claimed in claim 2, characterized in that: The right end of the L-shaped connecting pipe (136) is fixedly connected to the left end of the air extraction valve (7).

4. The dialkyl tertiary amine plus catalyst vacuum replacement device as claimed in claim 2, characterized in that: The material storage box (131) is a stainless steel box with a circular cross section.

5. The dialkyl tertiary amine plus catalyst vacuum replacement device as claimed in claim 2, characterized in that: The tapered tube (135) is a tapered stainless steel tube.

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