Hydrogenation upstream reactor cold hydrogen pipeline

Abstract

The utility model relates to the technical field of cooling, in particular to a cold hydrogen pipeline of a hydrogenation ascending type reactor, which comprises a hydrogenation reaction system, an ascending type reactor and a plurality of groups of fixed bed reactors, the ascending type reactor is connected with the fixed bed reactors through pipelines, and the fixed bed reactors are connected with the hydrogenation reaction system. A diverter valve group is connected between the end parts of the fixed bed reactors, one end of the diverter valve group is connected with an outlet of the circulating hydrogen compressor, the middle part of the diverter valve group is connected with a cold hydrogen supply branch line, the other end of the cold hydrogen supply branch line is connected with the upstream reactor, and the circulating hydrogen compressor conveys cold hydrogen to the diverter valve group; one part of cold hydrogen entering the diverter valve group enters each group of fixed bed reactors through the diverter valve group, and the other part of cold hydrogen enters the cold hydrogen supply line and enters the upstream reactor through the cold hydrogen supply line, so that the phenomenon of non-uniform cold hydrogen flow distribution in an existing branch flow distribution mode is fully solved, the cold hydrogen supply amount of the upstream reactor is increased, and the production efficiency is improved. And the steam consumption of the circulating hydrogen compressor is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cooling technical field, concretely relates to a hydrogenation upflow reactor cold hydrogen pipeline. BACKGROUND

[0002] The hydrogenation device reaction system is composed of one upflow reactor and four fixed bed reactors, the reactor inlet temperature is controlled by the cold hydrogen amount, in the commonly used cold hydrogen supply line, the cold hydrogen pipeline is usually led out from the end of the combined shunt valve, during normal production operation, the cold hydrogen flow distribution is often uneven, which causes the cold hydrogen amount of the upflow reactor to be insufficient, and the circulating hydrogen compressor speed needs to be continuously increased, through measurement, under the condition that the cold hydrogen amount is sufficient per unit time, 3.5MPa steam consumption needs to be increased, which causes energy loss and waste, therefore, a hydrogenation upflow reactor cold hydrogen pipeline is provided. SUMMARY

[0003] In order to solve the technical problems in the prior art, the utility model provides a hydrogenation upflow reactor cold hydrogen pipeline.

[0004] In order to solve the above technical problems, the utility model provides the following technical scheme: a hydrogenation upflow reactor cold hydrogen pipeline, including hydrogenation reaction system, the including upflow reactor and a plurality of groups of fixed bed reactors connected with each other, the upflow reactor outlet is connected with one group of fixed bed reactors through a pipeline, the fixed bed reactor end is connected with a shunt valve group, the shunt valve group inlet end is connected with the external circulating hydrogen compressor outlet through the main pipeline, the main pipeline middle part is connected with the cold hydrogen supply branch line through the tee joint, the other end of the cold hydrogen supply line is connected with the side inlet of the upflow reactor;

[0005] The circulating hydrogen compressor transports the cold hydrogen to the shunt valve group and the cold hydrogen supply branch line through the main pipeline, the cold hydrogen in the shunt valve group enters each group of fixed bed reactors through the shunt valve group respectively, the cold hydrogen entering the cold hydrogen supply line is guided into the upflow reactor through the cold hydrogen supply line, and the cold hydrogen entering the upflow reactor enters the fixed bed reactor through the pipeline along with the reactant.

[0006] Preferably, the fixed bed reactors are provided with four groups, the four groups of fixed bed reactors are arranged in parallel with one group of upflow reactors, the upflow reactors and the four groups of fixed bed reactors are connected in a head-to-tail mode through the pipeline, the first communication line, the second communication line and the third communication line, and the hydrogenated oil entering the upflow reactor interior passes through one group of upflow reactors and four groups of fixed bed reactors in sequence.

[0007] Preferably, the shunt valve group includes a first shunt valve, a second shunt valve and a third shunt valve, and the first shunt valve, the second shunt valve and the third shunt valve are combinedly connected.

[0008] Preferably, one end of the first, second and third shunt valves is connected with the third, second and first communication lines between the four groups of fixed bed reactors respectively, the first shunt valve is connected with the main pipeline, the cold hydrogen entering the first shunt valve is shunted into the second shunt valve while entering the first communication line, the cold hydrogen entering the second shunt valve is shunted into the third shunt valve while entering the second communication line, and the cold hydrogen entering the third shunt valve enters the third communication line.

[0009] Preferably, the cold hydrogen supply line comprises a cold hydrogen supply pipe and a cold hydrogen supply valve, the cold hydrogen supply pipe is connected with the cold hydrogen supply valve, the end of the cold hydrogen supply pipe is connected with the tee joint, and the end of the cold hydrogen supply valve is connected with the upflow reactor.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. The cold hydrogen supply line is arranged, the cold hydrogen supply line supplies the cold source to the upflow reactor from the outlet of the circulating hydrogen compressor in two lines, the supply amount of the cold hydrogen of the upflow reactor is improved from the side line, the problem that the cold hydrogen flow distribution is uneven and the steam supply needs to be increased to maintain the cold hydrogen supply amount existing in the distribution mode of the shunt valve is solved, and the steam consumption of the circulating hydrogen compressor is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The line structure schematic of the utility model Figure One ;

[0013] Figure 2 The line structure schematic of the utility model Figure Two .

[0014] Figures in the drawing represent:

[0015] 1. hydrogenation reaction system; 11. upflow reactor; 12. fixed bed reactor; 2. shunt valve group; 21. first shunt valve; 22. second shunt valve; 23. third shunt valve; 3. cold hydrogen supply line; 31. cold hydrogen supply pipe; 32. cold hydrogen supply valve. DETAILED DESCRIPTION

[0016] The above and other technical features and advantages of the utility model will be further described in the following with reference to the drawings and embodiments, but the following embodiments are only preferred embodiments of the utility model, not all.

[0017] Embodiment:

[0018] As Figure 1 - Figure 2The utility model provides a hydrogenation uplink formula reactor cold hydrogen pipeline, including hydrogenation reaction system 1, including uplink formula reactor 11 and several groups of fixed bed reactor 12 that are connected with each other, uplink formula reactor 11 export and one of fixed bed reactor 12 are connected through pipeline, and the fixed bed reactor 12 end is connected with the shunt valve group 2 between, the shunt valve group 2 liquid inlet end is connected with the external circulation hydrogen compressor export through main pipeline, and the main pipeline middle part is connected with cold hydrogen supply branch line 3 through the tee joint, and the other end of cold hydrogen supply line 3 is connected with the lateral inlet of uplink formula reactor 11,

[0019] The circulation hydrogen compressor is transported cold hydrogen through main pipeline to the shunt valve group 2 and cold hydrogen supply branch line 3, and the cold hydrogen in the shunt valve group 2 is entered into each group of fixed bed reactor 12 respectively through the shunt valve group 2, and the cold hydrogen into the cold hydrogen supply line 3 is guided into uplink formula reactor 11 through the cold hydrogen supply line 3, and the cold hydrogen into uplink formula reactor 11 is entered into fixed bed reactor 12 through pipeline along with reactant.

[0020] The fixed bed reactor 12 is provided with four groups, and the four groups of fixed bed reactor 12 are arranged in parallel with a group of uplink formula reactor 11, and the uplink formula reactor 11 is connected head to tail with the four groups of fixed bed reactor 12 through pipeline, first communication line, second communication line and third communication line, and the hydrogenated oil into the uplink formula reactor 11 passes through a group of uplink formula reactor 11 and four groups of fixed bed reactor 12 in turn.

[0021] The shunt valve group 2 includes first shunt valve 21, second shunt valve 22 and third shunt valve 23, and the first shunt valve 21, second shunt valve 22 and third shunt valve 23 are connected in combination.

[0022] One end of the first shunt valve 21, second shunt valve 22 and third shunt valve 23 is connected with the third communication line, second communication line and first communication line between the four groups of fixed bed reactor 12 respectively, the first shunt valve 21 is connected with the main pipeline, and the cold hydrogen into the first shunt valve 21 is shunted into the second shunt valve 22 while entering the first communication line, the cold hydrogen into the second shunt valve 22 is shunted into the third shunt valve 23 while entering the second communication line, and the cold hydrogen gas into the third shunt valve 23 enters the third communication line, and the cooperation of the first shunt valve 21, second shunt valve 22 and third shunt valve 23 and the third communication line, second communication line and first communication line realizes the segmented continuous supply of cold source.

[0023] The cold hydrogen supply line 3 includes cold hydrogen supply pipe 31 and cold hydrogen supply valve 32.

[0024] The cold hydrogen supply pipe 31 is connected with the cold hydrogen supply valve 32, the end of the cold hydrogen supply pipe 31 is connected with the circulating hydrogen compressor outlet, the end of the cold hydrogen supply valve 32 is connected with the upflow reactor 11, while the external circulating hydrogen compressor supplies cold hydrogen to the shunt valve group 2, the cold hydrogen is synchronously input into the cold hydrogen supply pipe 31, the cold hydrogen in the cold hydrogen supply pipe 31 enters into the upflow reactor 11 through the cold hydrogen supply valve 32, and the cold hydrogen is initially distributed from the cold hydrogen supply source, so that the phenomenon of uneven distribution caused by the distribution mode of the cold hydrogen through the shunt valve group 2 is avoided, and then the steam consumption is reduced, and the energy loss and waste are reduced.

[0025] The above merely describes the preferred embodiments of the present application, which are merely illustrative but not restrictive. It is understood by those skilled in the art that many changes, modifications and even equivalents can be made to the present application within the spirit and scope of the present application as defined in the claims, and all of them will fall within the protection scope of the present application.

Claims

1. A hydrogenation upflow reactor cold hydrogen line characterized by, The hydrogenation reaction system (1) and the cold hydrogen supply line (3) are included, the hydrogenation reaction system (1) includes an upflow reactor (11) and a plurality of groups of interconnected fixed bed reactors (12), the outlet of the upflow reactor (11) is connected with one group of fixed bed reactors (12) through a pipeline, the end of the fixed bed reactor (12) is connected with a shunt valve group (2), the liquid inlet end of the shunt valve group (2) is connected with the outlet of an external circulating hydrogen compressor through a main pipeline, the middle part of the main pipeline is connected with the cold hydrogen supply line (3) through a tee joint, the other end of the cold hydrogen supply line (3) is connected with the side inlet of the upflow reactor (11); The circulating hydrogen compressor delivers cold hydrogen to the shunt valve group (2) and the cold hydrogen supply line (3) through the main pipeline, the cold hydrogen entering the shunt valve group (2) enters each group of fixed bed reactors (12) through the shunt valve group (2) respectively, the cold hydrogen entering the cold hydrogen supply line (3) is guided into the upflow reactor (11) through the cold hydrogen supply line (3), and the cold hydrogen entering the upflow reactor (11) enters the fixed bed reactor (12) through the pipeline along with the reactants.

2. A hydrogenation upflowing reactor cold hydrogen line as set forth in claim 1, characterized by, The fixed bed reactor (12) is provided with four groups, the four groups of fixed bed reactors (12) are arranged in parallel with one group of upflow reactors (11), the upflow reactor (11) and the four groups of fixed bed reactors (12) are connected in a head-to-tail mode through a pipeline, a first communication line, a second communication line and a third communication line, and the hydrogenated oil entering the upflow reactor (11) passes through one group of upflow reactors (11) and the four groups of fixed bed reactors (12) in turn.

3. A hydrogenation upflowing reactor cold hydrogen line as set forth in claim 1, characterized by, The shunt valve group (2) includes a first shunt valve (21), a second shunt valve (22) and a third shunt valve (23), and the first shunt valve (21), the second shunt valve (22) and the third shunt valve (23) are combinedly connected.

4. A hydrogenation upflowing reactor cold hydrogen line as set forth in claim 3, characterized in that, One end of the first shunt valve (21), the second shunt valve (22) and the third shunt valve (23) is connected with the third communication line, the second communication line and the first communication line between the four groups of fixed bed reactors (12) respectively, the first shunt valve (21) is connected with the main pipeline, the cold hydrogen entering the first shunt valve (21) is shunted into the second shunt valve (22) while entering the first communication line, the cold hydrogen entering the second shunt valve (22) is shunted into the third shunt valve (23) while entering the second communication line, and the cold hydrogen entering the third shunt valve (23) enters the third communication line.

5. A hydrogenation upflowing reactor cold hydrogen line as set forth in claim 1, characterized by, The cold hydrogen supply line (3) includes a cold hydrogen supply pipe (31) and a cold hydrogen supply valve (32), the cold hydrogen supply pipe (31) is connected with the cold hydrogen supply valve (32), the end of the cold hydrogen supply pipe (31) is connected with a tee joint, and the end of the cold hydrogen supply valve (32) is connected with the upflow reactor (11).

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