Heat recovery device of spray tower

Abstract

The utility model discloses a heat recovery device of a spray tower, which comprises a tank body with an inlet and an outlet at two ends, a medium input pipe and a medium output pipe are mounted on the tank body in a penetrating manner, a spiral heat conduction mechanism is arranged between bottom ports of the medium input pipe and the medium output pipe, and a support frame is arranged on the outer sides of the bottom ports of the medium input pipe and the medium output pipe. The spiral heat conduction mechanism comprises a plurality of spiral guide pipes, annular cabins are fixedly arranged at the two ends of the spiral guide pipes and are connected in a penetrating mode, bottom ports of the medium input pipe and the medium output pipe are inverted-T-shaped pipe fittings, and one ends of the inverted-T-shaped pipe fittings are sealed and then inserted into the inner side of the supporting frame. The heat exchanger has the advantages of being high in heat exchange efficiency, not prone to leakage and low in maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger manufacturing technical field especially relates to a heat recovery device of spray tower. BACKGROUND

[0002] The spray tower is a kind of high-efficiency purification equipment that realizes pollutant absorption, cooling and dust removal by liquid spraying and waste gas contact.In terms of heat energy recovery, when the spray tower handles high-temperature waste gas, the heat in the waste gas can be transferred to spray liquid or other media needing heating through heat exchanger, to realize heat energy recovery and utilization, involving waste gas cooling and spray liquid heating, which reduces the temperature of waste gas and improves the temperature of spray liquid, providing heat source for subsequent process.

[0003] The conventional spray tower waste liquid treatment system generally uses external straight pipe heat exchanger, and there are problems such as low heat exchange efficiency and poor structural stability, and the heat exchange efficiency is less than 40%, and the conventional external straight pipe heat exchanger uses water as heat conduction medium, which is easy to freeze in winter and easy to vaporize at high temperature, so additional devices are needed to solve the above problems, which affects the production continuity and increases the complexity of heat exchange system. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problems of low heat exchange efficiency, easy leakage and high maintenance cost of the conventional spray tower heat energy recovery system and provides a heat recovery device of spray tower.

[0005] The utility model realizes the above-mentioned purposes by the following technical schemes: the tank body is provided with inlet and outlet at both ends, the medium input pipe and the medium output pipe are installed through the tank body, the spiral heat conduction mechanism is arranged between the medium input pipe and the bottom port of the medium output pipe, and the support frame is arranged outside the bottom port of the medium input pipe and the medium output pipe.

[0006] Further, the spiral heat conduction mechanism includes a plurality of spiral pipes, and the two ends of the spiral pipes are fixedly provided with annular cabins and are connected in penetration.

[0007] Further, the bottom port of the medium input pipe and the medium output pipe is a inverted T-shaped pipe fitting, one end of the inverted T-shaped pipe fitting is inserted into the inner side of the support frame after being closed.

[0008] Further, the other end of the inverted T-shaped pipe fitting is provided with a multi-branch pipe end, the multi-branch pipe end is provided with a plurality of branch pipes in penetration outside the pipe cap, and the pipe cap is connected with the output port of the inverted T-shaped pipe fitting.

[0009] Further, the plurality of branch pipes are connected in penetration with the annular cabins, and the pipe opening of the branch pipe corresponds to the position of the spiral pipe.

[0010] Furthermore, the top ends of the medium input pipe and the medium output pipe are connected through pipelines and pumps, forming a single-pipeline internal circulation state.

[0011] Furthermore, the media input pipe and the media output pipe are filled with ethylene glycol as a heat-conducting medium.

[0012] Beneficial effects: This utility model is reasonably designed and has the following beneficial effects:

[0013] 1. In this utility model solution, four major technological breakthroughs are achieved through the synergistic implementation of enhanced heat transfer via spiral flow channel, modular sealing structure, optimized medium characteristics, and closed-loop thermal energy circulation, which solves the industry pain points of traditional spray tower heat recovery systems, such as low heat exchange efficiency, easy leakage, and high maintenance costs.

[0014] 2. In this utility model, the synergistic effect of the spiral heat-conducting mechanism and the annular chamber, combined with the inverted T-shaped pipe fittings and multi-branch end caps, ensures the uniformity of medium distribution within the spiral conduit through precise alignment and connection of the branch pipes and the annular chamber. This allows the ethylene glycol medium to form a uniformly distributed flow path within the spiral conduit, significantly increasing the contact area and heat exchange time with the waste liquid. Compared to the traditional straight pipe structure, the spiral layout can improve the heat absorption efficiency of the waste liquid by more than 30%. The recovered heat energy is directly returned to the spray tower through the internal circulation system, realizing closed-loop utilization of waste heat resources and effectively reducing the heating energy consumption of the spray tower.

[0015] 3. In this utility model, the insert-type assembly structure of the support frame and the inverted T-shaped pipe fitting forms a mechanical support system, which improves the vibration resistance of the overall device under high temperature and high pressure conditions. At the same time, it facilitates modular disassembly and maintenance. The pipe cap sealing structure and the closed end design of the inverted T-shaped pipe fitting form a double anti-leakage barrier. Attached Figure Description

[0016] Fig. 1 This is a cross-sectional view of the structure of this utility model;

[0017] Fig. 2 This is a partial structural diagram of the present invention;

[0018] Fig. 3 This is a schematic diagram of the spiral heat conduction mechanism of this utility model.

[0019] In the diagram: 1-Tank body, 2-Medium input pipe, 3-Medium output pipe, 4-Spiral heat conduction mechanism, 5-Support frame, 6-Inverted T-shaped pipe fitting, 7-Multi-branch pipe end cap;

[0020] 41-Helical conduit, 42-Annular chamber, 71-Cap, 72-Branch. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Combination Figs. 1 to 3 The heat recovery device of the spray tower shown includes a tank 1 with inlet and outlet at both ends. A medium input pipe 2 and a medium output pipe 3 are installed through the tank 1. A spiral heat conduction mechanism 4 is provided between the bottom ports of the medium input pipe 2 and the medium output pipe 3. A support frame 5 is provided on the outside of the bottom ports of the medium input pipe 2 and the medium output pipe 3.

[0023] The spiral heat conduction mechanism 4 includes several spiral conduits 41, and the two ends of the spiral conduits 41 are fixedly provided with annular chambers 42 and are connected through each other.

[0024] Both the bottom ports of the medium input pipe 2 and the medium output pipe 3 are inverted T-shaped fittings 6. After one end of the inverted T-shaped fitting 6 is closed, it is inserted into the inside of the support frame 5.

[0025] The other end of the inverted T-shaped pipe fitting 6 is provided with a multi-branch pipe end cap 7. The multi-branch pipe end cap 7 is a structure in which several branch pipes 72 are provided through the outside of the pipe cap 71. The pipe cap 71 is connected to the output port of the inverted T-shaped pipe fitting 6.

[0026] Several branch pipes 72 are connected to the annular chamber 42, and the openings of the branch pipes 72 correspond to the positions of the spiral conduit 41.

[0027] The top ends of the medium input pipe 2 and the medium output pipe 3 are connected by a pipeline and a pump, and are in a single-pipeline internal circulation state.

[0028] The medium input pipe 2 and the medium output pipe 3 are filled with ethylene glycol as a heat transfer medium.

[0029] Working Principle: In use, the high-temperature waste liquid treated by the spray tower flows into the tank 1 through the inlet, forming a continuous liquid flow. During the flow of the waste liquid in the tank, its heat is conducted through the tank wall and the internal spiral heat conduction mechanism 4. Low-temperature ethylene glycol enters from the medium input pipe 2, and is diverted through the inverted T-shaped pipe fitting 6 to multiple branch pipe end caps 7 and the annular chamber 42 at one end, and then evenly distributed to multiple spiral conduits 41. The ethylene glycol flows in a turbulent state in the spiral conduits 41, fully absorbing the heat of the surrounding waste liquid. The spiral layout extends the flow path of the ethylene glycol and increases the contact time with the waste liquid. The spiral centrifugal effect enhances the turbulence of the medium, breaks the boundary layer, and improves the heat transfer coefficient. The high-temperature ethylene glycol that has absorbed heat gathers in the annular chamber 42 and returns to the spray tower through the medium output pipe 3. The high-temperature ethylene glycol releases heat through the heat exchanger in the spray tower, transferring the heat energy to the liquid that needs to be heated in the spray tower, realizing the reuse of waste heat. The low-temperature ethylene glycol that has released heat is pumped into the medium input pipe 2, forming a closed loop circulation.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat recovery device for a spray tower, comprising a tank (1) with inlets and outlets at both ends, characterized in that: A medium input pipe (2) and a medium output pipe (3) are installed through the tank (1). A spiral heat conduction mechanism (4) is provided between the bottom ports of the medium input pipe (2) and the medium output pipe (3). A support frame (5) is provided on the outside of the bottom ports of the medium input pipe (2) and the medium output pipe (3). The spiral heat conduction mechanism (4) includes several spiral conduits (41), and both ends of the several spiral conduits (41) are fixedly provided with annular chambers (42) and are connected in a continuous manner; The bottom ports of the medium input pipe (2) and the medium output pipe (3) are both inverted T-shaped pipe fittings (6), and one end of the inverted T-shaped pipe fitting (6) is closed and inserted into the inside of the support frame (5); The other end of the inverted T-shaped pipe fitting (6) is provided with a multi-branch pipe end cap (7). The multi-branch pipe end cap (7) is a structure in which several branch pipes (72) are provided through the outside of the pipe cap (71). The pipe cap (71) is connected to the output port of the inverted T-shaped pipe fitting (6).

2. The heat recovery device for a spray tower according to claim 1, characterized in that: Several of the branch pipes (72) are connected to the annular chamber (42) through the pipes, and the openings of the branch pipes (72) correspond to the positions of the spiral conduit (41).

3. The heat recovery device for a spray tower according to claim 2, characterized in that: The top ends of the medium input pipe (2) and the medium output pipe (3) are connected by a pipeline and a pump and are in a single-pipeline internal circulation state.

4. The heat recovery device for a spray tower according to claim 3, characterized in that: The medium input pipe (2) and the medium output pipe (3) are filled with ethylene glycol as a heat-conducting medium.

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