CN209451314U - The pressure of n-butene extractant takes hot auxiliary device - Google Patents

Abstract

The utility model relates to an auxiliary device for forced heat extraction of n-butene extractant. Its technical scheme is: the lower side wall of the n-butene extraction agent regeneration tower communicates with the top of the first reboiler and the second reboiler through the circulation inlet line, and the top of the first reboiler and the second reboiler The bottom is collected into the main line through the branch line, and connected to the circulation pump through the second valve, and the circulation pump is connected to the bottom of the n-butene extractant regeneration tower through the first valve and the circulation out line. The beneficial effects are: the utility model adds multiple groups of reboilers for parallel use, and can be individually controlled to open or close according to the needs of the regeneration tower, and in order to increase the circulation amount of the bottom material of the regeneration tower, a circulation pump is added, The circulating pump is used to increase the circulation volume of the material; in addition, the inner chamber of the reboiler is equipped with a forced spoiler set up obliquely, thereby improving the heat exchange efficiency, and the surface is equipped with a wear-resistant layer, which improves its service life and prolongs the life of the reboiler. equipment maintenance time.

Description

Forced heat extraction auxiliary device for n-butene extractant

technical field

The utility model relates to a n-butene extractant regeneration device, in particular to an n-butene extractant forced heat extraction auxiliary device.

Background technique

Because the n-butene extractant has a good rust removal function, due to long-term recycling, the process pipes and equipment contain rust, which is easy to form mechanical impurities; in addition, the impurities contained in the raw material olefin mixture may form high polymers, resulting in n-butene The impurity content in the olefin extractant gradually increases, which affects the extraction effect of the extractant, resulting in the failure of the extraction unit to operate normally.

When the impurity content in the n-butene extractant rises to 3%, the n-butene extractant needs to be regenerated. At present, the device regenerates the n-butene extractant. After a period of regeneration, it is found that the impurities in the n-butene extractant cannot reach the ideal index. After continuous analysis, it is found that the main reason is that the heat absorbed by the bottom material is insufficient.

Therefore, we need to take a measure so that the material at the bottom of the tower can fully absorb heat to meet the effect of separating impurities.

Contents of the invention

The purpose of this utility model is to aim at the above-mentioned defects existing in the prior art, to provide a kind of n-butene extractant forced heat extraction auxiliary device, by adding two or more sets of regenerators on the lower side of the n-butene extractant regeneration tower Boiler, and additional circulation pump for forced circulation, so as to achieve the purpose of separating n-butene extractant impurities.

Its technical scheme is: including n-butene extractant regeneration tower (1), first reboiler (2), second reboiler (3), circulation pump (4), first valve (5), second The valve (6), the lower side wall of the n-butene extractant regeneration tower (1) communicates with the top of the first reboiler (2) and the second reboiler (3) through the circulation inlet line (7), The bottoms of the first reboiler (2) and the second reboiler (3) are collected into the main line through branch lines, and connected to the circulation pump (4) through the second valve (6), and the circulation pump (4) Connect to the bottom of the n-butene extraction agent regeneration tower (1) through the first valve (5) and the circulation out line (8).

Preferably, the above-mentioned first reboiler (2) and second reboiler (3) are connected in parallel through branch lines.

Preferably, the sub-pipeline at the lower part of the first reboiler (2) is provided with a first sub-control valve (2.1), a high-temperature hot water inlet (2.2) is provided on the lower outer wall, and a low-temperature hot water outlet is provided on the upper outer wall ( 2.3).

Preferably, the sub-pipeline at the lower part of the second reboiler (3) is provided with a second sub-control valve (3.1), a high-temperature hot water inlet (3.2) is provided on the lower outer wall, and a low-temperature hot water outlet is provided on the upper outer wall ( 3.3).

Preferably, the outsides of the first reboiler (2) and the second reboiler (3) are connected in parallel to the third reboiler (9) through branch lines, and a third sub-control valve (9.1) is installed.

Preferably, the above-mentioned first reboiler (2) includes a high-temperature hot water inlet (2.2), a low-temperature hot water outlet (2.3), a n-butene extractant outlet (2.4), a n-butene extractant inlet (2.5), a forced spoiler (2.6), reboiler inner cavity (2.7), reboiler outer shell (2.8), reboiler inner cavity (2.7) is covered with reboiler outer shell (2.8), And the lower outer wall of the reboiler outer shell (2.8) is provided with a high-temperature hot water inlet (2.2), and the upper outer wall is provided with a low-temperature hot water outlet (2.3), and the high-temperature hot water flows through the reboiler outer shell (2.8 ) to heat the reboiler inner cavity (2.7), and the inner cavity of the reboiler inner cavity (2.7) is provided with staggered forced spoilers (2.6).

Preferably, the above-mentioned forced spoiler (2.6) has a corrugated structure, and a wear-resistant layer is provided on the surface.

The beneficial effects of the utility model are: the utility model adds multiple sets of reboilers for parallel use, and can be individually controlled to open or close according to the needs of the regeneration tower, and, in order to increase the circulation amount of the bottom material of the regeneration tower, A circulation pump is added to increase the circulation volume of the material; in addition, the inner chamber of the reboiler of the utility model is provided with a forced spoiler arranged obliquely upward, thereby improving the heat exchange efficiency, and the surface is provided with a wear-resistant layer , which improves its service life and prolongs the maintenance time of the equipment.

Description of drawings

Accompanying drawing 1 is the structural representation of embodiment 1 of the present utility model;

Accompanying drawing 2 is the structural representation of the first reboiler;

Accompanying drawing 3 is the schematic diagram of mandatory spoiler;

Accompanying drawing 4 is the structural representation of embodiment 2 of the present utility model;

In the figure above: n-butene extraction agent regeneration tower 1, first reboiler 2, second reboiler 3, circulation pump 4, first valve 5, second valve 6, first sub-control valve 2.1, high temperature heat Water inlet 2.2, low-temperature hot water outlet 2.3, n-butene extractant outlet 2.4, n-butene extractant inlet 2.5, forced spoiler 2.6, reboiler inner cavity 2.7, reboiler outer shell 2.8, second branch Control valve 3.1, high temperature hot water inlet 3.2, low temperature hot water outlet 3.3, third control valve 9.1.

Detailed ways

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

With reference to accompanying drawing 1, the n-butene extractant mentioned in the utility model is forced to take heat auxiliary device, comprises n-butene extractant regeneration tower 1, the first reboiler 2, the second reboiler 3, circulation pump 4, First valve 5, second valve 6, the lower side wall of described n-butene extractant regeneration tower 1 communicates with the top of the first reboiler 2 and the second reboiler 3 by circulating into line 7, described The bottoms of the first reboiler 2 and the second reboiler 3 are collected into the main line through branch lines, and connected to the circulation pump 4 through the second valve 6, which is circulated through the first valve 5 and the circulation out line 8 It is connected to the bottom of n-butene extractant regeneration tower 1.

Preferably, the first reboiler 2 and the second reboiler 3 are connected in parallel through branch lines.

Preferably, the sub-pipeline at the lower part of the first reboiler 2 is provided with a first sub-control valve 2.1, a high-temperature hot water inlet 2.2 is provided on the lower outer wall, and a low-temperature hot water outlet 2.3 is provided on the upper outer wall.

Preferably, the sub-pipeline at the lower part of the second reboiler 3 is provided with a second sub-control valve 3.1, a high-temperature hot water inlet 3.2 is provided on the lower outer wall, and a low-temperature hot water outlet 3.3 is provided on the upper outer wall.

Preferably, the above-mentioned first reboiler 2 includes a high-temperature hot water inlet 2.2, a low-temperature hot water outlet 2.3, a n-butene extractant outlet 2.4, a n-butene extractant inlet 2.5, a forced spoiler 2.6, and a reboiler inner cavity Body 2.7, reboiler outer shell 2.8, the reboiler inner cavity 2.7 is covered with a reboiler outer shell 2.8, and the lower outer wall of the reboiler outer shell 2.8 is provided with a high-temperature hot water inlet 2.2 , the upper outer wall is provided with a low-temperature hot water outlet 2.3, and the high-temperature hot water flows through the reboiler outer shell 2.8 to heat the reboiler inner cavity 2.7, and the inner cavity of the reboiler inner cavity 2.7 is provided with a staggered arrangement The mandatory spoiler 2.6.

Preferably, the above-mentioned forced spoiler 2.6 is a corrugated structure, and the surface is provided with a wear-resistant layer, and each forced spoiler 2.6 is set in an oblique upward direction, so that the high-pressure n-butene extractant will encounter the forced spoiler 2.6 Finally, the mixing effect is increased to improve the heating efficiency, and the corrugated structure improves the turbulence effect; it is precisely because of the improved turbulence effect that it is necessary to add a wear-resistant layer, thereby improving the service life and prolonging the maintenance time .

The utility model adds multiple groups of reboilers for parallel use, and can be individually controlled to open or close according to the needs of the regeneration tower. Moreover, in order to increase the circulation amount of the bottom material of the regeneration tower, a circulation pump is added, and the circulation pump is used to increase Circulation of large materials.

Embodiment 2, with reference to accompanying drawing 4, the n-butene extractant mentioned in the utility model is forced to get heat auxiliary device and the difference of embodiment 1 is: the outside of the first reboiler 2 and the second reboiler 3 are reheated By connecting the third reboiler 9 in parallel with the branch line, and installing the third sub-control valve 9.1, the heating effect can be improved, and the second reboiler or the third reboiler can be closed according to the heating requirements of the regeneration tower. One or two sets of reboilers are reserved to avoid or reduce downtime for maintenance and improve production efficiency.

The above are only preferred embodiments of the present utility model, and any person skilled in the art may use the above-mentioned technical solutions to modify the present utility model or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the utility model belongs to the protection scope of the utility model.

Claims (7)

1. a kind of pressure of n-butene extractant takes hot auxiliary device, it is characterized in that: including n-butene extractant regeneration tower (1), the One reboiler (2), the second reboiler (3), circulating pump (4), the first valve (5), the second valve (6), the n-butene extraction The lower wall of agent regenerator (1) is connected to the top of the first reboiler (2) and the second reboiler (3), institute by circulation inlet pipe line (7) The bottom of the first reboiler (2) and the second reboiler (3) stated is pooled to Trunk Line by being in charge of line, and passes through the second valve (6) it is connected to circulating pump (4), the circulating pump (4), which passes through the first valve (5) and recycles pipeline (8), is communicated to n-butene extraction Take the bottom of agent regenerator (1).

2. n-butene extractant pressure according to claim 1 takes hot auxiliary device, it is characterized in that: first reboiler (2) it is connected in parallel with the second reboiler (3) by being in charge of line.

3. n-butene extractant pressure according to claim 2 takes hot auxiliary device, it is characterized in that: first reboiler (2) line of being in charge of of lower part is equipped with the first sub-control valve (2.1), and in downside, outer wall is equipped with high-temperature-hot-water import (2.2), and upside outer wall is set There is low-temperature water heating to export (2.3).

4. n-butene extractant pressure according to claim 2 takes hot auxiliary device, it is characterized in that: second reboiler (3) line of being in charge of of lower part is equipped with the second sub-control valve (3.1), and in downside, outer wall is equipped with high-temperature-hot-water import (3.2), and upside outer wall is set There is low-temperature water heating to export (3.3).

5. n-butene extractant pressure according to claim 1 takes hot auxiliary device, it is characterized in that: first reboiler (2) and the outside of the second reboiler (3) is again by being in charge of line parallel connection third reboiler (9), and installs third sub-control valve (9.1).

6. n-butene extractant pressure according to claim 1 takes hot auxiliary device, it is characterized in that: first reboiler It (2) include high-temperature-hot-water import (2.2), low-temperature water heating outlet (2.3), the outlet of n-butene extractant (2.4), n-butene extractant Entrance (2.5) forces spoiler (2.6), reboiler inner chamber body (2.7), reboiler outer housing (2.8), the reboiler inner cavity The outside of body (2.7) is cased with reboiler outer housing (2.8), and the downside outer wall of the reboiler outer housing (2.8) is equipped with high temperature Hot water inlet (2.2), upside outer wall are equipped with low-temperature water heating outlet (2.3), and high-temperature-hot-water flows through reboiler outer housing (2.8) to again Device inner chamber body (2.7) heating is boiled, and the inner cavity of the reboiler inner chamber body (2.7) is equipped with staggered pressure spoiler (2.6).

7. n-butene extractant pressure according to claim 6 takes hot auxiliary device, it is characterized in that: the pressure spoiler It (2.6) is corrugated structure, and surface is equipped with wearing layer.