Desorption tower with tower top waste heat recovery structure

Abstract

The utility model provides a desorption tower with a tower top waste heat recovery structure, which comprises a desorption tower main body, an outer ring frame and a waste heat recovery mechanism, and a tower top body is arranged at the middle front lower end of the inner part of the desorption tower main body. The installation sliding block support is embedded into the installation sliding groove and moved to the tail end from one end of the center of the tower top body, at the moment, the upper flange plate and the lower flange plate are located at the concentric position and connected and fixed through bolts, the waste heat recovery mechanisms are installed and fixed, and the two waste heat recovery mechanisms are intermittently overhauled and maintained in daily use. The control ball valve controls the waste heat recovery branch pipe to guide in hot air, the hot air enters the heat exchange box and is converted through the heat exchanger, the problem that the desorption tower body stops or the waste heat recovery mechanism loses the waste heat recovery effect can be avoided, and impurities of the hot air can be filtered by adding the waste heat recovery mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of desorption towers in the petrochemical industry, and particularly relates to a desorption tower with a tower top waste heat recovery structure. Background Art

[0002] The petrochemical industry, referred to as petrochemicals, generally refers to the chemical industry that uses oil and natural gas as raw materials. Desorbers are used in the petrochemical industry. Desorbers are equipment that separates part of the solutes in the solvent (liquid phase) with gas or steam (gas phase). Existing desorbers are connected to and installed with a waste heat recovery structure at the top of the tower to recycle and reuse the hot gas discharged from the top of the desorber. However, most common desorbers can only be connected to a mechanism with a single waste heat recovery function. In actual use, the waste heat recovery mechanism often needs to be overhauled and maintained on a daily basis. The frequency and time of the overhaul and daily periodic maintenance of the waste heat recovery mechanism are different from those of the desorber itself, and synchronous overhaul and maintenance cannot be achieved. The desorber is still in operation while the waste heat recovery mechanism needs to be overhauled or maintained on a periodic basis. The desorber may need to be shut down, which will delay normal production operations.

[0003] Secondly, in order to ensure the normal production of the desorption tower, the waste heat recovery mechanism will continue to work when it needs to be repaired or maintained, resulting in poor waste heat recovery effect and loss of the corresponding waste heat recovery function within a certain period of time.

[0004] In summary, there are some problems in the use of the desorption tower connected to a single waste heat recovery mechanism, so it is hoped to propose a new structure to solve the above technical problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a desorption tower with a tower top waste heat recovery structure to solve the problems raised in the above-mentioned background technology.

[0006] The utility model is realized through the following technical scheme: a desorption tower with a tower top waste heat recovery structure, comprising: a desorption tower body, an outer ring frame and a waste heat recovery mechanism, wherein the desorption tower body has a tower top body at the front lower end in its internal composition, an outer ring frame for supporting is provided at the upper end of the outer side surface of the tower top body, an outer support frame for supporting is provided at one end of the outer ring frame away from the center of the tower top body, a waste heat recovery mechanism for recovering waste heat from the tower top is provided at the rear side of the outer support frame, an outlet pipe is provided at the lower end in its internal composition, and a heat exchange box for waste heat conversion is provided above the outlet pipe.

[0007] As a preferred embodiment, a heat exchanger is provided inside the heat exchange box, and a transition introduction pipe is provided above the heat exchange box to introduce the filtered hot air into the inside of the heat exchange box. The filtered hot air can be introduced into the heat exchange box through the transition introduction pipe to realize waste heat recovery through the heat exchanger.

[0008] As a preferred embodiment, a filter box for filtering impurities from the hot gas discharged from the tower top body is provided above the transition inlet pipe, and a hot gas inlet pipe is provided above the filter box;

[0009] A mounting slider bracket is provided on the front side of the hot air inlet pipe for convenient positioning and installation of the waste heat recovery mechanism, and a lower flange is provided above the hot air inlet pipe.

[0010] As a preferred embodiment, a waste heat recovery main pipe is provided above the tower top body, and a group of waste heat recovery branch pipes are provided on the left and right sides of the lower rear end of the waste heat recovery main pipe, and a group of control ball valves are provided on the front sides of the lower ends of the two groups of waste heat recovery branch pipes, which can close and open the control ball valves accordingly according to the shutdown conditions of the two groups of waste heat recovery mechanisms.

[0011] As a preferred embodiment, an upper flange is provided at the lower end of the waste heat recovery branch pipe, and the lower surface of the upper flange is in contact with the upper surface of the lower flange and is fixed by bolts;

[0012] The rear side of the outer support frame is provided with an installation slot, and the installation slider bracket is movably engaged with the installation slot. The installation slider bracket is embedded in the inner side of the installation slot and moved to the end toward the center of the tower top body, which can facilitate the positioning between the upper flange and the lower flange.

[0013] As a preferred embodiment, a group of fixing plates are provided on both the upper and lower ends of the left and right sides of the inner side of the filter box, and an installation groove for convenient installation of the filter plate is formed between the upper and lower groups of the fixing plates, and a filter plate for filtering impurities in hot air is provided inside the installation groove.

[0014] As a preferred embodiment, a group of fixing threaded holes are provided at both the front and rear ends of the upper surface of the fixing plate at the upper end, and fixing bolts are provided inside the fixing threaded holes.

[0015] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: by adding a desorption tower body and a waste heat recovery mechanism, the installation slider bracket is embedded in the installation slide groove and moved to the end at one end of the center of the tower top body. At this time, the upper flange and the lower flange are in a concentric position and are fixed with bolts to install and fix the waste heat recovery mechanism. During daily use, the two sets of waste heat recovery mechanisms are intermittently inspected and maintained. The introduction of hot gas by the waste heat recovery branch pipe is controlled by controlling the ball valve. The hot gas enters the heat exchange box and is converted through the heat exchanger. This can avoid the problem of shutdown of the desorption tower body or loss of waste heat recovery effect by the waste heat recovery mechanism. By adding a waste heat recovery mechanism, the hot gas can be filtered for impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a partial structural schematic diagram of a desorption tower with a tower top waste heat recovery structure according to the utility model.

[0018] Figure 2 It is a schematic diagram of the partial structure of a desorption tower body in a desorption tower with a tower top waste heat recovery structure according to the utility model.

[0019] Figure 3 It is a partial structural schematic diagram of a waste heat recovery mechanism in a desorption tower with a tower top waste heat recovery structure according to the utility model.

[0020] Figure 4 It is a schematic diagram of the internal partial structure of a waste heat recovery mechanism in a desorption tower with a tower top waste heat recovery structure according to the utility model without a filter plate.

[0021] Figure 5 The utility model is a schematic diagram of the internal partial structure of a waste heat recovery mechanism in a desorption tower with a tower top waste heat recovery structure.

[0022] In the figure, 100-desorption tower body, 101-tower top body, 102-outer ring frame, 103-outer support frame, 104-installation slide, 105-waste heat recovery main pipe, 106-waste heat recovery branch pipe, 107-control ball valve, 108-upper flange;

[0023] 200-waste heat recovery mechanism, 201-lower flange, 202-hot gas inlet pipe, 203-installation slider bracket, 204-filter box, 205-fixing plate, 206-fixing bolt, 207-installation groove, 208-filter plate, 209-transition inlet pipe, 210-heat exchange box, 211-export pipe. DETAILED DESCRIPTION

[0024] 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 of 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.

[0025] See also Figures 1 to 5 The utility model provides a technical solution: a desorption tower with a tower top waste heat recovery structure, comprising: a desorption tower body 100, an outer ring frame 102 and a waste heat recovery mechanism 200, wherein the desorption tower body 100 has a tower top body 101 at the front lower end thereof;

[0026] An outer ring frame 102 for supporting is provided at the upper end of the outer surface of the tower top body 101, and an outer support frame 103 for supporting is provided at one end of the outer ring frame 102 away from the center of the tower top body 101, and a waste heat recovery mechanism 200 for recovering waste heat from the tower top is provided at the rear side of the outer support frame 103;

[0027] The waste heat recovery mechanism 200 has an internal structure in which a guide pipe 211 is provided at the lower end, and a heat exchange box 210 for waste heat conversion is provided above the guide pipe 211 .

[0028] A heat exchanger is provided inside the heat exchange box 210, and a transition introduction pipe 209 is provided above the heat exchange box 210 for introducing the filtered hot air into the inside of the heat exchange box 210. The filtered hot air can be introduced into the heat exchange box 210 through the transition introduction pipe 209, and waste heat can be recovered through the heat exchanger.

[0029] A filter box 204 is provided above the transition introduction pipe 209 to filter impurities from the hot gas exhausted from the tower top body 101, and a hot gas introduction pipe 202 is provided above the filter box 204;

[0030] A mounting slider bracket 203 is provided on the front side of the hot gas introduction pipe 202 for convenient positioning and installation of the waste heat recovery mechanism 200 , and a lower flange 201 is provided above the hot gas introduction pipe 202 .

[0031] A waste heat recovery main pipe 105 is provided above the tower top body 101, and a group of waste heat recovery branch pipes 106 are provided on the left and right sides of the lower rear end of the waste heat recovery main pipe 105. A group of control ball valves 107 are provided on the front sides of the lower ends of the two groups of waste heat recovery branch pipes 106, which can close and open the control ball valves 107 accordingly according to the shutdown status of the two groups of waste heat recovery mechanisms 200.

[0032] An upper flange 108 is provided at the lower end of the waste heat recovery branch pipe 106, and the lower surface of the upper flange 108 and the upper surface of the lower flange 201 are fitted to each other and fixed by bolts;

[0033] An installation groove 104 is opened on the rear side of the outer support frame 103, and the installation slider bracket 203 is movably engaged with the installation groove 104. The installation slider bracket 203 is embedded in the inner side of the installation groove 104 and moved to the end toward the center of the tower top body 101, which can facilitate the positioning between the upper flange 108 and the lower flange 201.

[0034] See also Figure 1-Figure 5 As the first embodiment of the utility model: first, the user embeds the installation slider bracket 203 into the installation slide groove 104 and moves it to the end at the center end of the tower top body 101. At this time, the upper flange 108 and the lower flange 201 are in a concentric position, which can facilitate the positioning and installation between the upper flange 108 and the lower flange 201. Then, the upper flange 108 and the lower flange 201 are connected and fixed with bolts to complete the installation and fixation of the waste heat recovery mechanism 200. Secondly, in daily use, the two sets of waste heat recovery mechanisms 200 are subject to interval inspection and maintenance. The user controls the introduction of hot gas by the waste heat recovery branch pipe 106 through the control ball valve 107. The hot gas enters the heat exchange box 210 and is then converted through the heat exchanger to realize waste heat recovery and utilization, thereby avoiding the problem of shutdown of the analysis tower body or loss of waste heat recovery effect of the waste heat recovery mechanism.

[0035] A set of fixing plates 205 are provided on both the upper and lower ends of the left and right sides of the inner side of the filter box 204, and a mounting groove 207 for conveniently installing a filter plate 208 is formed between the upper and lower sets of fixing plates 205. A filter plate 208 for filtering impurities in hot air is provided inside the mounting groove 207.

[0036] A set of fixing threaded holes are provided at both the front and rear ends of the upper surface of the upper fixing plate 205 , and fixing bolts 206 are provided inside the fixing threaded holes.

[0037] See also Figure 1 and Figure 3-Figure 5, as the second embodiment of the utility model: based on the above-mentioned first embodiment, a group of fixing plates 205 are provided on the upper and lower ends of the left and right sides of the inner side surface of the filter box 204, and a mounting groove 207 for conveniently installing the filter plate 208 is formed between the upper and lower groups of fixing plates 205. A filter plate 208 for filtering impurities in hot air is provided on the inner side of the mounting groove 207. A group of fixing threaded holes are opened on the front and rear ends of the upper surface of the upper fixing plate 205, and fixing bolts 206 are provided on the inner side of the fixing threaded holes. The user can embed the filter plate 208 into the inner side of the mounting groove 207, and then use the fixing bolts 206 to screw into the inner side of the fixing threaded holes to fix the filter plate 208. The filter plate 208 can be disassembled, assembled and replaced, so as to filter impurities in hot air.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A desorption tower with a tower top waste heat recovery structure, comprising: A desorption tower body (100), an outer ring frame (102) and a waste heat recovery mechanism (200), characterized in that: the desorption tower body (100) has a tower top body (101) at the front lower end thereof; An outer ring frame (102) for supporting is provided at the upper end of the outer side surface of the tower top body (101), an outer support frame (103) for supporting is provided at one end of the outer ring frame (102) away from the center of the tower top body (101), and a waste heat recovery mechanism (200) for recovering waste heat from the tower top is provided at the rear side of the outer support frame (103); The waste heat recovery mechanism (200) has an internal component in which a guide pipe (211) is provided at the lower end, and a heat exchange box (210) for waste heat conversion is provided above the guide pipe (211).

2. A desorption tower with a tower top waste heat recovery structure as claimed in claim 1, characterized in that: A heat exchanger is provided inside the heat exchange box (210), and a transition introduction pipe (209) is provided above the heat exchange box (210) for introducing filtered hot air into the inside of the heat exchange box (210).

3. A desorption tower with a tower top waste heat recovery structure as claimed in claim 2, characterized in that: A filter box (204) for filtering impurities from the hot gas exhausted from the tower top body (101) is provided above the transition introduction pipe (209), and a hot gas introduction pipe (202) is provided above the filter box (204); A mounting slider bracket (203) is provided on the front side of the hot air introduction pipe (202) for convenient positioning and installation of the waste heat recovery mechanism (200), and a lower flange (201) is provided above the hot air introduction pipe (202).

4. A desorption tower with a tower top waste heat recovery structure as claimed in claim 3, characterized in that: A waste heat recovery main pipe (105) is provided above the tower top body (101), and a group of waste heat recovery branch pipes (106) are provided on both sides of the lower rear end of the waste heat recovery main pipe (105), and a group of control ball valves (107) are provided on the front sides of the lower ends of the two groups of waste heat recovery branch pipes (106).

5. A desorption tower with a tower top waste heat recovery structure as claimed in claim 4, characterized in that: An upper flange (108) is provided at the lower end of the waste heat recovery branch pipe (106), and the lower surface of the upper flange (108) and the upper surface of the lower flange (201) are in contact with each other and are fixed by bolt connection; The rear side surface of the outer support frame (103) is provided with a mounting slide groove (104), and the mounting slider bracket (203) and the mounting slide groove (104) are movably engaged with each other.

6. A desorption tower with a tower top waste heat recovery structure as claimed in claim 3, characterized in that: A set of fixing plates (205) are provided on both the left and right sides and the upper and lower ends of the inner side surface of the filter box (204); a mounting groove (207) for conveniently mounting a filter plate (208) is formed between the upper and lower sets of the fixing plates (205); a filter plate (208) for filtering impurities from hot air is provided inside the mounting groove (207).

7. A desorption tower with a tower top waste heat recovery structure as claimed in claim 6, characterized in that: A group of fixing threaded holes are provided at both the front and rear ends of the upper surface of the fixing plate (205) at the upper end, and fixing bolts (206) are provided inside the fixing threaded holes.

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