Novel phthalic anhydride gas material recovery tank

Abstract

The utility model discloses a novel phthalic anhydride gas material recovery tank, which comprises an inner cylinder, an outer cylinder and a plurality of heat exchange tube groups, the inner cylinder is arranged in the outer cylinder, a plurality of inlet cavities and a plurality of outlet cavities are formed between the inner cylinder and the outer cylinder, the inlet cavities and the outlet cavities are distributed along the longitudinal direction, and the heat exchange tube groups are arranged in the outer cylinder. A plurality of inlet nozzles communicated with the inlet cavities and a plurality of outlet nozzles communicated with the outlet cavities are formed in the side face of the outer barrel, a bottom liquid outlet nozzle communicated to the inner barrel is formed in the bottom of the outer barrel, and an air inlet nozzle communicated to the side face of the bottom of the inner barrel is formed in the side face of the bottom of the outer barrel. According to the utility model, gasification waste of materials is avoided, the material cost is saved, and environmental pollution caused by discharge of phenol gas is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of material recovery, especially a novel phthalic anhydride gas material recovery tank. BACKGROUND

[0002] In the chemical industry, phthalic anhydride (phthalic anhydride) as an important organic chemical raw material, is widely used in the production process of plastics, resins, coatings and plasticizers. However, phthalic anhydride material has a significant problem in the storage process, that is, it is easy to sublimate, especially in the case of high temperature or improper storage conditions, a large amount of gas will be produced. The accumulation of these sublimation gas will cause the internal pressure of the storage container to rise sharply, which not only may cause safety hazards to the storage equipment, but also may cause accidents due to improper pressure release.

[0003] Traditionally, the method for handling such sublimation gas is to discharge directly into the atmosphere. However, this approach has two major drawbacks: first, direct discharge will result in a large amount of waste of raw materials, increasing the production cost; second, the sublimation gas often contains harmful substances, and direct discharge without treatment will cause serious pollution to the environment, which does not conform to the green and sustainable development concept of modern industry. SUMMARY

[0004] In view of the above problems existing in the existing phthalic anhydride material, the present application aims to provide a novel phthalic anhydride gas material recovery tank which saves cost and avoids pollution discharge.

[0005] The specific technical scheme is as follows:

[0006] A novel phthalic anhydride gas material recovery tank, comprising: an inner cylinder, an outer cylinder and a plurality of heat exchange pipe groups, the inner cylinder is arranged in the outer cylinder, and a plurality of inlet cavities and a plurality of outlet cavities are formed between the inner cylinder and the outer cylinder, the plurality of inlet cavities and the plurality of outlet cavities are distributed along the longitudinal direction, the side surface of the outer cylinder has a plurality of inlet nozzles respectively communicating with the plurality of inlet cavities and a plurality of outlet nozzles respectively communicating with the plurality of outlet cavities, the bottom of the outer cylinder has a bottom liquid outlet nozzle communicating with the bottom of the inner cylinder, and the bottom side surface of the outer cylinder has an air inlet nozzle communicating with the bottom side surface of the inner cylinder.

[0007] Among them, one end of a plurality of heat exchange pipe groups respectively communicates with a plurality of inlet cavities, and the other end of a plurality of heat exchange pipe groups passes through the inner cylinder along the radial direction of the inner cylinder and respectively communicates with a plurality of outlet cavities.

[0008] As a further improvement and optimization of the present scheme, a plurality of heat exchange pipe groups are distributed along the longitudinal direction at equal intervals.

[0009] As a further improvement and optimization of the scheme, each of the heat exchange pipe groups comprises a plurality of through pipes, one end of the plurality of through pipes being in communication with the inlet cavity and the other end being in communication with the outlet cavity.

[0010] As a further improvement and optimization of the scheme, the outer wall of each of the through pipes has a plurality of fins.

[0011] As a further improvement and optimization of the scheme, the gas inlet nozzle is located below the plurality of heat exchange pipe groups, and the top of the outer cylinder body is provided with a gas outlet nozzle in communication with the top of the inner cylinder body.

[0012] As a further improvement and optimization of the scheme, the gas outlet nozzle is provided in plurality.

[0013] As a further improvement and optimization of the scheme, a valve is arranged on each of the gas outlet nozzles and the liquid outlet nozzle.

[0014] As a further improvement and optimization of the scheme, a plurality of annular partitions are coaxially arranged between the inner cylinder body and the outer cylinder body, the plurality of annular partitions are longitudinally distributed, and a cavity is formed between two adjacent partitions, the inner cylinder body and the outer cylinder body, and each of the cavities is provided with a partition plate on both sides, and the cavity is divided into an inlet cavity and an outlet cavity by the two partition plates.

[0015] As a further improvement and optimization of the scheme, the valve is a handwheel valve.

[0016] As a further improvement and optimization of the scheme, the bottom of the outer cylinder body is provided with a supporting leg.

[0017] The above technical scheme has the following positive effects compared with the prior art:

[0018] (1) In the utility model, after the gaseous phenol after gasification of the phenol material is introduced into the inner cylinder body, a cold source is introduced into the plurality of heat exchange pipe groups to liquefy or crystallize the gaseous phenol, and then a heat source is introduced into the plurality of heat exchange pipe groups to liquefy the phenol in the crystalline state, and the liquefied phenol is discharged through the liquid outlet nozzle for repeated use of the material, which not only avoids waste of gasification of the material and saves material cost, but also avoids environmental pollution caused by external discharge of the gaseous phenol.

[0019] (2) In the utility model, in order to improve the recovery effect of each group of heat exchange pipe groups on the gaseous phenol, each group of heat exchange pipe groups comprises a plurality of through pipes, one end of the plurality of through pipes being in communication with the inlet cavity and the other end being in communication with the outlet cavity.

[0020] (3) In the utility model, the outer wall of each of the through pipes has a plurality of fins, which increases the contact area of the through pipes with the gaseous phenol, and further improves the recovery effect of each group of heat exchange pipe groups on the gaseous phenol.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view of the novel phthalic anhydride gas material recovery tank of the utility model;

[0022] Figure 2 It is a side view of the novel phthalic anhydride gas material recovery tank of the utility model;

[0023] Figure 3 It is a front view of the novel phthalic anhydride gas material recovery tank of the utility model; Figure 1 It is an enlarged schematic view of A place in the middle;

[0024] In the drawings: 1, inner cylinder; 2, outer cylinder; 3, heat exchange pipe group; 4, support leg; 5, partition; 6, partition cavity plate; 11, gas inlet nozzle; 12, liquid outlet nozzle; 13, exhaust nozzle; 14, inlet cavity; 15, outlet cavity; 16, inlet nozzle; 17, outlet nozzle; 31, through pipe; 32, fin. DETAILED DESCRIPTION

[0025] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of protection of the utility model.

[0026] In the description of the utility model, it needs to be explained that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like appear, the indicated orientation or position relationship based on the orientation or position relationship shown in the drawings is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, if the terms "first", "second", "third" appear, they are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0027] In the description of the utility model, it needs to be explained that unless otherwise explicitly specified and limited, if the terms "mounting", "connection", "connection" appear, they should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For the ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] Figure 1The utility model relates to a novel phthalic anhydride gas material recovery tank's front view, Figure 2 The utility model relates to a novel phthalic anhydride gas material recovery tank's side view, Figure 3 The utility model relates to a novel phthalic anhydride gas material recovery tank's Figure 1 The utility model discloses a novel phthalic anhydride gas material recovery tank, Figures 1-3 As shown in the drawing, a novel phthalic anhydride gas material recovery tank of a preferred embodiment comprises an inner cylinder 1, an outer cylinder 2 and multiple groups of heat exchange pipe groups 3, the inner cylinder 1 is arranged in the outer cylinder 2, multiple inlet cavities 14 and multiple outlet cavities 15 are formed between the inner cylinder 1 and the outer cylinder 2, the multiple inlet cavities 14 and the multiple outlet cavities 15 are distributed along the longitudinal direction, the side of the outer cylinder 2 is provided with multiple inlet nozzles 16 and multiple outlet nozzles 17 which are respectively communicated with the multiple inlet cavities 14 and the multiple outlet cavities 15, the bottom of the outer cylinder 2 is provided with a bottom liquid outlet nozzle 12 which is communicated with the bottom of the inner cylinder 1, and the bottom side of the outer cylinder 2 is provided with an air inlet nozzle 11 which is communicated with the bottom side of the inner cylinder 1, wherein one end of the multiple groups of heat exchange pipe groups 3 is respectively communicated with the multiple inlet cavities 14, the other end of the multiple groups of heat exchange pipe groups 3 penetrates the inner cylinder 1 along the radial direction of the inner cylinder 1 and is respectively communicated with the multiple outlet cavities 15.

[0029] In the embodiment, the heat source (such as hot steam) or the cold source (such as water) enters the inlet cavity 14 through the inlet nozzle 16, passes through the heat exchange pipe group 3 and is discharged into the outlet cavity 15, and finally is discharged through the liquid outlet nozzle 12;

[0030] The specific working process is as follows:

[0031] First, the multiple heat exchange pipe groups 3 are connected to the cold source, the phenol gas is introduced into the inner cylinder 1 through the air inlet nozzle 11, and when the phenol gas sequentially passes through the multiple groups of heat exchange pipe groups 3 upwards in the inner cylinder 1, part of the phenol gas is liquefied by cooling and flows to the bottom of the inner cylinder 1, and part of the phenol gas is crystallized and condensed on the surface of the heat exchange pipe group 3, the liquefied phenol material can be discharged through the liquid outlet nozzle 12 for recycling, and when the phenol material crystallized and condensed on the surface of the heat exchange pipe group 3 reaches a certain thickness, the heat source is introduced into the multiple heat exchange pipe groups 3 to liquefy the phenol in the crystalline state and make it flow to the bottom of the inner cylinder 1, and finally be discharged through the liquid outlet nozzle 12.

[0032] In the embodiment, after the gaseous phenol material is introduced into the inner cylinder 1, the cold source is introduced into the multiple heat exchange pipe groups 3 to liquefy or crystallize the phenol gas, and then the heat source is introduced into the multiple heat exchange pipe groups 3 to liquefy the phenol in the crystalline state, and finally the liquefied phenol is discharged through the liquid outlet nozzle 12 for recycling, which not only avoids the waste of material gasification and saves the cost of material, but also avoids the environmental pollution caused by the external discharge of phenol gas.

[0033] Specifically, the embodiment is not limited to the recovery of gas phenol, and can also be used for recovering materials which are easy to sublimate at high temperature and easy to crystallize at low temperature.

[0034] Further, as a preferred embodiment, the plurality of heat exchange pipe groups 3 are distributed at equal intervals along the longitudinal direction.

[0035] Further, as a preferred embodiment, in order to improve the recovery effect of each heat exchange pipe group 3 on gas phenol, each heat exchange pipe group 3 comprises a plurality of pipes 31, one end of the plurality of pipes 31 being in communication with the inlet cavity 14 and the other end being in communication with the outlet cavity 15.

[0036] Further, as a preferred embodiment, the outer wall of each pipe 31 has a plurality of fins 32, which increases the contact area of the pipe 31 with the gas phenol, thereby further improving the recovery effect of each heat exchange pipe group 3 on the gas phenol.

[0037] Further, as a preferred embodiment, the gas inlet nozzle 11 is located below the plurality of heat exchange pipe groups 3, and the top of the outer cylinder 2 has a gas outlet nozzle 13 which is in communication with the top of the inner cylinder 1. The purpose of providing the gas outlet nozzle 13 is to discharge other gases in the inner cylinder 1 after the recovery of the phenol gas is completed.

[0038] Further, as a preferred embodiment, the gas outlet nozzle 13 is provided in plurality.

[0039] Further, as a preferred embodiment, a valve is provided on each of the gas outlet nozzle 13 and the liquid outlet nozzle 12.

[0040] Further, as a preferred embodiment, a plurality of annular partitions 5 are coaxially arranged between the inner cylinder 1 and the outer cylinder 2, the plurality of annular partitions 5 are distributed along the longitudinal direction, and a chamber is formed between the two adjacent partitions 5, the inner cylinder 1 and the outer cylinder 2. Each chamber has a partition cavity 6 arranged on both sides, and the chamber is divided into an inlet cavity 14 and an outlet cavity 15 by the two partition cavities 6.

[0041] Further, as a preferred embodiment, the valve is a handwheel valve.

[0042] Further, as a preferred embodiment, the bottom of the outer cylinder 2 has a support leg 4.

[0043] The above description is only a preferred embodiment of the present application, and is not intended to limit the implementation and protection scope of the present application. For those skilled in the art, it should be realized that any equivalent replacement and obvious changes made according to the content of the present application description and drawings should be included in the protection scope of the present application.

Claims

1. A new type of phthalic anhydride gas material recovery tank, characterized in that, The application relates to a heat exchange device, which comprises an inner cylinder, an outer cylinder and multiple groups of heat exchange pipes. The inner cylinder is arranged in the outer cylinder, and multiple inlet cavities and multiple outlet cavities are formed between the inner cylinder and the outer cylinder; the multiple inlet cavities and the multiple outlet cavities are longitudinally distributed; the side surface of the outer cylinder is provided with multiple inlet nozzles which respectively communicate with the multiple inlet cavities and multiple outlet nozzles which respectively communicate with the multiple outlet cavities; the bottom of the outer cylinder is provided with a bottom liquid outlet nozzle which communicates with the bottom of the inner cylinder; and the bottom side surface of the outer cylinder is provided with an air inlet nozzle which communicates with the bottom side surface of the inner cylinder. One end of each group of the heat exchange pipes respectively communicates with the multiple inlet cavities, and the other end of each group of the heat exchange pipes penetrates the inner cylinder along the radial direction of the inner cylinder and respectively communicates with the multiple outlet cavities.

2. The new maleic anhydride gas material recovery tank according to claim 1, characterized in that, The multiple groups of the heat exchange pipes are longitudinally and equidistantly distributed.

3. The new maleic anhydride gas material recovery tank according to claim 2, characterized in that, Each group of the heat exchange pipes comprises multiple through pipes, one end of each through pipe communicates with the inlet cavity, and the other end of each through pipe communicates with the outlet cavity.

4. The new maleic anhydride gas material recovery tank according to claim 3, characterized in that, The outer wall of each through pipe is provided with fins.

5. The new maleic anhydride gas material recovery tank according to claim 1, characterized in that, The air inlet nozzle is arranged below the multiple groups of the heat exchange pipes, and the top of the outer cylinder is provided with an air outlet nozzle which communicates with the top of the inner cylinder.

6. The new maleic anhydride gas material recovery tank according to claim 5, characterized in that, The air outlet nozzle is provided with multiple air outlet nozzles.

7. The new maleic anhydride gas material recovery tank according to claim 6, characterized in that, Valves are arranged on each air outlet nozzle and the liquid outlet nozzle.

8. The new maleic anhydride gas material recovery tank according to claim 1, characterized in that, Multiple annular partitions are coaxially arranged between the inner cylinder and the outer cylinder, the multiple annular partitions are longitudinally distributed, two adjacent partitions, the inner cylinder and the outer cylinder form a cavity, two side surfaces of each cavity are provided with partition plates, and the cavity is divided into an inlet cavity and an outlet cavity by the two partition plates.

9. The new maleic anhydride gas material recovery tank according to claim 7, characterized in that, The valve is a hand wheel valve.

10. The new maleic anhydride gas material recovery tank according to claim 1, characterized in that, The bottom of the outer cylinder is provided with a supporting leg.

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