Continuous hydrogenation equipment

Abstract

The utility model relates to the technical field of chemical equipment, and discloses continuous hydrogenation equipment, which is characterized in that a quantitative catalyst (a solid feeding agent is used when the catalyst is used for the first time, the catalyst is recycled, and the catalyst is pumped into a hydrogenation kettle in the form of a methanol solution when the catalyst is recycled) is added into the hydrogenation kettle, nitrogen is used for replacement, then hydrogen is used for replacement, and the replacement pressure each time is 0.1-0.3 Mpa. Stirring is started, a certain amount of hydrogen is introduced, when the pressure reaches 0.6 Mpa, the temperature is increased to 45-75 DEG C, hydrogen is intermittently supplemented, the hydrogen pressure is maintained to be 0.45-1.15 Mpa, and a heat preservation reaction is carried out at 45-80 DEG C; and then heating to 65-95 DEG C, intermittently supplementing hydrogen, maintaining the pressure of the hydrogen to be 0.45-1.15 MPa, carrying out heat preservation reaction at 65-100 DEG C, heating to 75-105 DEG C, intermittently supplementing hydrogen, maintaining the pressure of the hydrogen to be 0.45-1.15 MPa, and carrying out heat preservation reaction until the hydrogen is not consumed.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a continuous hydrogenation device. Background Art

[0002] Hydrogenation is a highly exothermic reaction in the gas-liquid phase under pressure. The main raw material hydrogen used is a flammable and explosive colorless gas. When using an intermittent kettle reaction, it needs to be replaced with high-purity nitrogen until the oxygen content reaches the standard. In the early and middle stages of the reaction, the heat release is obvious, and overheating and local overtemperature are prone to occur, resulting in side reactions, affecting the yield and product quality. Among them, unstable and dangerous intermediate products are generated. Existing hydrogenation equipment is not convenient for continuous hydrogenation. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The purpose of the utility model is to provide a continuous hydrogenation device to solve the problem of inconvenience in continuous hydrogenation in the above background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a continuous hydrogenation equipment, including a hydrogenation kettle, a hydrogenation liquid standing tank and a filter tank, the hydrogenation liquid standing tank is fixedly installed at the upper end of the right end of the hydrogenation kettle, the filter tank is fixedly installed at the lower end of the hydrogenation liquid standing tank, the hydrogenation liquid transfer tank body is fixedly installed at the lower end of the right end of the filter tank, the hydrogenation liquid transfer tank transfer pump is fixedly installed at the right end of the hydrogenation liquid transfer tank body, the titanium rod filter is fixedly installed at the right end of the upper end of the hydrogenation liquid transfer tank transfer pump, the catalyst small tank is fixedly installed at the lower end of the titanium rod filter, the titanium rod filter plays a filtering role, the hydrogenation liquid receiving tank body is fixedly installed at the lower end of the right end of the catalyst small tank, the hydrogenation liquid receiving tank transfer pump is fixedly installed at the right end of the hydrogenation liquid receiving tank body, and the security filter is fixedly installed at the upper end of the hydrogenation liquid receiving tank transfer pump. When the carbon rod filter fails, the security filter can ensure that no unfiltered material will enter the next process, resulting in unqualified products.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] 1. The continuous hydrogenation equipment adds a quantitative catalyst to the hydrogenation kettle (solid feed agent is used for the first use, and it is recycled. When recycled, it is injected into the hydrogenation kettle in the form of methanol solution), and then replaces with nitrogen and hydrogen. The pressure of each replacement is 0.1~0.3Mpa. After the feeding is completed, the stirring is turned on, and a quantitative amount of hydrogen is introduced. When the pressure reaches 0.6Mpa, the temperature is raised to 45~75℃, hydrogen is added intermittently, and the hydrogen pressure is maintained at 0.45~1.15Mpa, and the reaction is kept warm at 45~80℃. Then the temperature is raised to 65~95℃, hydrogen is added intermittently, and the hydrogen pressure is maintained at 0.45~1.15MPa. The reaction is kept warm at 65~100℃, and the temperature is raised to 75~105℃, hydrogen is added intermittently, and the hydrogen pressure is maintained at 0.45~1.15MPa, and the reaction is kept warm until the hydrogen is no longer consumed;

[0009] 2. For the continuous hydrogenation equipment, after nitrogen replacement is completed, the material in the hydrogenation kettle is pressed into the hydrogenation liquid standing tank by nitrogen. After standing for a period of time, the catalyst and the hydrogenation liquid are separated, and the catalyst is precipitated to the bottom of the hydrogenation liquid standing tank. The discharge port on the side of the hydrogenation liquid standing tank is opened, and the hydrogenation liquid enters the hydrogenation liquid transfer tank body. After the hydrogenation liquid enters the hydrogenation liquid transfer tank body, it is transferred to the titanium rod filter through the hydrogenation liquid transfer tank transfer pump. After the filtration is completed, the hydrogenation liquid enters the hydrogenation liquid receiving tank body, and is transferred to the safety filter through the hydrogenation liquid receiving tank transfer pump to complete the hydrogenation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0012] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model Figure 1 ;

[0013] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model Figure 2 .

[0014] In the figure: 1. Hydrogenation kettle; 2. Hydrogenation liquid standing tank; 3. Filter tank; 4. Hydrogenation liquid transfer tank body; 5. Hydrogenation liquid transfer tank transfer pump; 6. Titanium rod filter; 7. Catalyst small tank; 8. Hydrogenation liquid receiving tank body; 9. Hydrogenation liquid receiving tank transfer pump; 10. Safety filter. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-Figure 4The utility model provides a technical solution: a continuous hydrogenation device, comprising a hydrogenation kettle 1, a hydrogenation liquid standing tank 2 and a filter tank 3, the hydrogenation liquid standing tank 2 is fixedly mounted on the upper end of the right end of the hydrogenation kettle 1, the filter tank 3 is fixedly mounted on the lower end of the hydrogenation liquid standing tank 2, the hydrogenation liquid transfer tank body 4 is fixedly mounted on the lower end of the right end of the filter tank 3, the hydrogenation liquid transfer tank transfer pump 5 is fixedly mounted on the right end of the hydrogenation liquid transfer tank body 4, the titanium rod filter 6 is fixedly mounted on the right end of the upper end of the hydrogenation liquid transfer tank transfer pump 5, the catalyst tank 7 is fixedly mounted on the lower end of the titanium rod filter 6, and the hydrogenation liquid receiving tank body 8 is fixedly mounted on the lower end of the right end of the catalyst tank 7 The hydrogenation liquid receiving tank transfer pump 9 is fixedly installed on the right end of the hydrogenation liquid receiving tank body 8, and the security filter 10 is fixedly installed on the upper end of the hydrogenation liquid receiving tank transfer pump 9. A quantitative catalyst is added to the hydrogenation kettle 1 (solid feed agent is used for the first use, and it is recycled. When recycled, it is injected into the hydrogenation kettle 1 in the form of methanol solution), and nitrogen is used for replacement and then hydrogen is replaced. The pressure of each replacement is 0.1~0.3Mpa. After the feeding is completed, the stirring is turned on and a quantitative hydrogen is introduced. When the pressure reaches 0.6Mpa, the temperature is raised to 45~75℃, hydrogen is supplemented intermittently, and the hydrogen pressure is maintained at 0.45~1.15Mpa, and the reaction is kept warm at 45~80℃. Then the temperature is raised to 65-95°C, hydrogen is added intermittently, and the hydrogen pressure is maintained at 0.45-1.15MPa. The reaction is kept warm at 65-100°C, and the temperature is raised to 75-105°C, hydrogen is added intermittently, and the hydrogen pressure is maintained at 0.45-1.15MPa. The reaction is kept warm until the hydrogen is no longer consumed, the heating is turned off, the temperature is lowered to 35-65°C, the stirring is turned off to release the pressure, and the exhaust gas in the kettle is replaced by nitrogen. After the nitrogen replacement is completed, the material in the hydrogenation kettle 1 is pressed into the hydrogenation liquid standing tank 2 by nitrogen. After standing for a period of time, the catalyst and the hydrogenation liquid are separated, and the catalyst is precipitated to the bottom of the hydrogenation liquid standing tank 2. The discharge port on the side of the hydrogenation liquid standing tank 2 is opened, and the hydrogenation liquid enters the hydrogenation liquid transfer tank body 4. After the hydrogenation liquid enters the hydrogenation liquid transfer tank body 4, it is added The hydrogen liquid transfer tank transfer pump 5 transfers to the titanium rod filter 6. After the filtration is completed, the hydrogenation liquid enters the hydrogenation liquid receiving tank body 8, and is transferred to the security filter 10 through the hydrogenation liquid receiving tank transfer pump 9 to complete the hydrogenation process. After the material in the hydrogenation kettle 1 is transferred to the hydrogenation liquid standing tank 2, the next batch of raw materials can be added. At the same time, the discharge port at the bottom of the hydrogenation liquid standing tank 2 is opened, and the catalyst enters the filter tank 3. After filtration, it is added to the hydrogenation kettle 1 for application to achieve continuous hydrogenation. After passing through the standing tank and the transfer tank, the material enters the titanium rod filter 6 for filtration. Most of the catalyst returns to the hydrogenation kettle 1 for application, which can effectively reduce the working pressure of the filter. When the carbon rod filter 6 fails, the security filter 10 can ensure that no unfiltered material enters the next process, resulting in unqualified products.

[0017] Working principle: add quantitative catalyst to hydrogenation reactor 1 (use solid feed agent for the first time, and recycle it. When recycled, inject it into hydrogenation reactor 1 in the form of methanol solution), replace it with nitrogen and then replace it with hydrogen. The pressure of each replacement is 0.1~0.3Mpa. After the feeding is completed, start stirring and introduce quantitative hydrogen. When the pressure reaches 0.6Mpa, raise the temperature to 45~75℃, add hydrogen intermittently, maintain the hydrogen pressure at 0.45~1.15Mpa, and keep the reaction at 45~80℃. Then the temperature is raised to 65-95°C, hydrogen is added intermittently, and the hydrogen pressure is maintained at 0.45-1.15MPa. The reaction is kept warm at 65-100°C, and the temperature is raised to 75-105°C, hydrogen is added intermittently, and the hydrogen pressure is maintained at 0.45-1.15MPa. The reaction is kept warm until the hydrogen is no longer consumed, the heating is turned off, the temperature is lowered to 35-65°C, the stirring is turned off to release the pressure, and the exhaust gas in the kettle is replaced by nitrogen. After the nitrogen replacement is completed, the material in the hydrogenation kettle 1 is pressed into the hydrogenation liquid standing tank 2 by nitrogen. After standing for a period of time, the catalyst and the hydrogenation liquid are separated, and the catalyst is precipitated to the bottom of the hydrogenation liquid standing tank 2. The discharge port on the side of the hydrogenation liquid standing tank 2 is opened, and the hydrogenation liquid enters the hydrogenation liquid transfer tank body 4. After the hydrogenation liquid enters the hydrogenation liquid transfer tank body 4, it is added The hydrogen liquid transfer tank transfer pump 5 transfers to the titanium rod filter 6. After the filtration is completed, the hydrogenation liquid enters the hydrogenation liquid receiving tank body 8, and is transferred to the security filter 10 through the hydrogenation liquid receiving tank transfer pump 9 to complete the hydrogenation process. After the material in the hydrogenation kettle 1 is transferred to the hydrogenation liquid standing tank 2, the next batch of raw materials can be added. At the same time, the discharge port at the bottom of the hydrogenation liquid standing tank 2 is opened, and the catalyst enters the filter tank 3. After filtration, it is added to the hydrogenation kettle 1 for application to achieve continuous hydrogenation. After passing through the standing tank and the transfer tank, the material enters the titanium rod filter 6 for filtration. Most of the catalyst returns to the hydrogenation kettle 1 for application, which can effectively reduce the working pressure of the filter. When the carbon rod filter 6 fails, the security filter 10 can ensure that no unfiltered material enters the next process, resulting in unqualified products.

[0018] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A continuous hydrogenation device, characterized in that: The invention comprises a hydrogenation kettle (1), a hydrogenation liquid static tank (2) and a filter tank (3), wherein the hydrogenation liquid static tank (2) is fixedly mounted on the upper end of the right end of the hydrogenation kettle (1), the filter tank (3) is fixedly mounted on the lower end of the hydrogenation liquid static tank (2), the hydrogenation liquid transfer tank body (4) is fixedly mounted on the lower end of the right end of the filter tank (3), the hydrogenation liquid transfer tank material transfer pump (5) is fixedly mounted on the right end of the hydrogenation liquid transfer tank body (4), the titanium rod filter (6) is fixedly mounted on the right end of the upper end of the hydrogenation liquid transfer tank material transfer pump (5), the catalyst tank (7) is fixedly mounted on the lower end of the titanium rod filter (6), the hydrogenation liquid receiving tank body (8) is fixedly mounted on the lower end of the right end of the catalyst tank (7), the hydrogenation liquid receiving tank material transfer pump (9) is fixedly mounted on the right end of the hydrogenation liquid receiving tank body (8), and the safety filter (10) is fixedly mounted on the upper end of the hydrogenation liquid receiving tank material transfer pump (9).

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