Efficient heat exchange gasifier

Abstract

The efficient heat exchange gasifier is characterized in that a plurality of heat exchange pipe layers are arranged in a cavity from top to bottom, each heat exchange pipe layer comprises a plurality of heat exchange pipes, and the heat exchange pipes of every two adjacent heat exchange pipe layers are arranged in a staggered mode; a liquid inlet and a gas outlet are formed in the top of the cavity; a combustor is arranged below the plurality of heat exchange tube layers in the cavity; during use, low-temperature liquid enters the multiple heat exchange pipes from the liquid inlet, the bottom combustor generates high-temperature smoke through flaming combustion, the smoke directly heats the hearth and the heat exchange smoke pipes and indirectly heats heat exchange water, the water temperature in the cavity rises, the heat exchange water flows in the cavity, and the low-temperature liquid in the heat exchange pipes absorbs heat and gradually becomes gas; due to the fact that the heat exchange pipes on the two adjacent sides are arranged in a staggered mode, the water flow flows between the heat exchange pipes in an S-shaped track mode, the disturbance of the water flow is improved, and the water temperature of all the parts is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of gasifiers, in particular to a high-efficiency heat exchange gasifier. Background Art

[0002] A vaporizer is a device used to heat liquid gas into gas. Simply put, deep-cold liquid gas becomes gas at a certain temperature after passing through the vaporizer. The heating can be indirect (steam heating vaporizer, hot water circulation water bath vaporizer, natural ventilation air bath vaporizer, forced ventilation vaporizer, electric heating vaporizer, solid heat conduction vaporizer or heat transfer fluid) or direct (hot gas or submerged combustion).

[0003] The heat exchange tubes of the water bath vaporizer in the prior art are arranged in a rectangular row. During heat exchange, the contact time between the hot water and the heat exchange tubes is short, and when the hot water flows between the heat exchange tubes, the disturbance is small. The temperature of the water flow close to the heat exchange tubes is low, resulting in low heat exchange efficiency.

[0004] In view of this, a high-efficiency heat exchange gasifier is urgently needed. Summary of the invention

[0005] In view of the problems existing in the prior art, the utility model solves the problems with the following technical structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-efficiency heat exchange gasifier comprises: a cavity, in which a plurality of heat exchange tube layers are arranged from top to bottom, each of the heat exchange tube layers comprises a plurality of heat exchange tubes, and the heat exchange tubes of two adjacent heat exchange tube layers are arranged in a staggered manner;

[0008] The top of the cavity is provided with a liquid inlet and a gas outlet, and the liquid inlet and the gas outlet are both connected to a plurality of heat exchange tubes;

[0009] A burner is arranged in the cavity below the multiple heat exchange tube layers.

[0010] A further feature is that

[0011] The two opposite sides of the cavity extend from bottom to top toward one side approaching each other.

[0012] A plurality of first smoke pipes are arranged on both sides of the burner in the cavity, and the plurality of first smoke pipes are all connected to the burner.

[0013] The plurality of first smoke pipes are staggered.

[0014] A plurality of second smoke pipes are arranged above the burner in the cavity, and the plurality of second smoke pipes are all connected to the burner.

[0015] The plurality of second smoke pipes are staggered.

[0016] A smoke exhaust pipe is arranged on one side of the cavity, and the smoke exhaust pipe is connected with a plurality of first smoke pipes and a plurality of second smoke pipes.

[0017] The smoke exhaust port of the smoke exhaust pipe is arranged on one side of the top end of the cavity.

[0018] The cavity is provided with a water spray pipeline below the burner, and the water spray pipeline is provided with a plurality of nozzles.

[0019] A water circulation device, wherein the water inlet of the water circulation device is connected to the top of the cavity, and the water outlet of the water circulation device is connected to the water spray pipeline.

[0020] The above structure of the utility model can achieve the following beneficial effects:

[0021] When in use, the low-temperature liquid enters multiple heat exchange tubes evenly from the total liquid inlet. The bottom burner indirectly heats the hot water through the furnace and the smoke pipe to increase the water temperature in the cavity. The hot water flows naturally in the cavity, causing the low-temperature liquid in the heat exchange tube to absorb the heat in the water and gradually turn into gas. Finally, the gas is discharged from the gas outlet. Due to the staggered arrangement of the heat exchange tubes on the adjacent sides, the water flows in an S-shaped trajectory between the heat exchange tubes, which increases the disturbance of the water flow, makes the water temperature of each part more uniform, and improves the heat exchange effect of the low-temperature material in the heat exchange tube and the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front cross-sectional view of this embodiment;

[0023] Figure 2 A side cross-sectional view of this embodiment.

[0024] In the figure: 1. cavity; 11. liquid inlet; 12. gas outlet; 2. heat exchange tube; 3. burner; 4. first flue gas pipe; 5. second flue gas pipe; 6. flue gas exhaust pipe; 7. water spray pipeline; 8. water circulation device. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0026] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0027] The following is combined with Figure 1 and Figure 2 This application is described in further detail.

[0028] Example 1, reference Figure 1 and Figure 2 A high-efficiency heat exchange gasifier shown includes: a cavity 1 (the cavity 1 is sealed and filled with heat exchange water), a plurality of heat exchange tube layers are arranged from top to bottom in the cavity 1, each heat exchange tube layer includes a plurality of heat exchange tubes 2, and the heat exchange tubes 2 of two adjacent heat exchange tube layers are staggered; a liquid inlet 11 and a gas outlet 12 are arranged at the top of the cavity 1, and the liquid inlet 11 and the gas outlet 12 are both connected to the plurality of heat exchange tubes 2 (the heat exchange tubes in the same layer or the same column in the vertical direction can be connected in a serpentine shape, or an integrated serpentine heat exchange tube can be used, and the inlets of all serpentine heat exchange tubes are connected to the liquid inlet 11, and the outlets are connected to the gas outlet 12); A burner 3 (burner, furnace, smoke pipe, etc.) is arranged below the multiple heat exchange tube layers in the cavity 1. When in use, the low-temperature liquid enters the multiple heat exchange tubes 2 from the liquid inlet 11, and the bottom burner 3 heats the hot water to increase the water temperature in the cavity 1. The hot water flows in the cavity 1, so that the low-temperature liquid in the heat exchange tube 2 absorbs heat and gradually turns into gas, and finally the gas is discharged from the gas outlet 12. Since the heat exchange tubes 2 on the adjacent sides are staggered, the water flows in an S-shaped trajectory between the heat exchange tubes 2, which increases the disturbance of the water flow, makes the water temperature of each part more uniform, and the heat exchange effect of the low-temperature substance in the heat exchange tube 2 is better and the heat exchange efficiency is higher.

[0029] refer to Figure 2 As shown, the two opposite sides of the cavity 1 extend from bottom to top toward the sides close to each other, so that the width of the cavity 1 gradually decreases from bottom to top. When the water flow in the cavity 1 moves from bottom to top, the heat flow on both sides is converged inward, which achieves the purpose of forced convection and further improves the heat exchange efficiency.

[0030] refer to Figure 1As shown, a plurality of first flue gas pipes 4 are arranged on both sides of the burner 3 in the cavity 1, and the plurality of first flue gas pipes 4 are all connected to the burner 3, and the plurality of first flue gas pipes 4 are staggered; a plurality of second flue gas pipes 5 are arranged above the burner 3 in the cavity 1, and the plurality of second flue gas pipes 5 are all connected to the burner 3, and the plurality of second flue gas pipes 5 are staggered; a flue gas exhaust pipe 6 is arranged on one side of the cavity 1, and the flue gas exhaust pipe 6 is connected to the plurality of first flue gas pipes 4 and the plurality of second flue gas pipes 5, and the exhaust port of the flue gas exhaust pipe 6 is arranged on the top side of the cavity 1, so that the high-temperature flue gas generated by the combustion of the burner 3 flows in the cavity 1 through the plurality of first flue gas pipes 4 and the second flue gas pipes 5, so as to achieve the purpose of recovering and utilizing the waste heat of the flue gas, further improve the utilization rate of energy, reduce the loss of energy, reduce the production cost, and protect the environment.

[0031] refer to Figure 1 and Figure 2 As shown, the cavity 1 is provided with a water spray pipe 7 below the burner 3, and the water spray pipe 7 is provided with a plurality of nozzles and a water circulation device 8. The water inlet of the water circulation device 8 is connected with the top of the cavity 1, and the water outlet of the water circulation device 8 is connected with the water spray pipe 7. The low-temperature hot water at the top of the cavity 1 (the temperature of the hot water at the bottom of the cavity 1 is higher than the temperature of the hot water at the top) is transported to the water spray pipe 7 through the water circulation device 8, and sprayed upward through the water spray pipe 7, so that the high-temperature water at the bottom moves upward, thereby improving the fluidity of the hot water in the cavity 1, and the water spray pipe 7 sprays water upward, which can also increase the disturbance of the water flow, further improving the heat exchange effect and heat exchange efficiency.

[0032] In summary, when in use, the low-temperature liquid enters multiple heat exchange tubes from the liquid inlet, and the bottom burner generates high-temperature flue gas by flame combustion. The flue gas directly heats the furnace and the heat exchange smoke tube, and indirectly heats the hot water, so that the water temperature in the cavity increases. The hot water flows in the cavity, so that the low-temperature liquid in the heat exchange tube absorbs heat and gradually turns into gas, and finally the gas is discharged from the gas outlet. Due to the staggered arrangement of the heat exchange tubes on the adjacent sides, the water flows in an S-shaped trajectory between the heat exchange tubes, which increases the disturbance of the water flow, makes the water temperature of each part more uniform, and the heat exchange effect of the low-temperature medium in the heat exchange tube is better, the heat exchange efficiency is higher, the exhaust temperature is lower, and it is more energy-saving.

[0033] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A high-efficiency heat exchange gasifier, characterized in that: include: A cavity (1), wherein a plurality of heat exchange tube layers are arranged from top to bottom in the cavity (1), each of the heat exchange tube layers comprises a plurality of heat exchange tubes (2), and the heat exchange tubes (2) of two adjacent heat exchange tube layers are staggered; The top of the cavity (1) is provided with a liquid inlet (11) and a gas outlet (12), and the liquid inlet (11) and the gas outlet (12) are both connected to a plurality of heat exchange tubes (2); A burner (3) is arranged in the cavity (1) below the multiple heat exchange tube layers.

2. A high-efficiency heat exchange gasifier according to claim 1, characterized in that: The two opposite sides of the cavity (1) extend from bottom to top towards one side approaching each other.

3. The high-efficiency heat exchange gasifier according to claim 1, characterized in that: A plurality of first smoke pipes (4) are arranged on both sides of the burner (3) in the cavity (1), and the plurality of first smoke pipes (4) are all connected to the burner (3).

4. A high-efficiency heat exchange gasifier according to claim 3, characterized in that: The plurality of first smoke pipes (4) are arranged in a staggered manner.

5. The high-efficiency heat exchange gasifier according to claim 3, characterized in that: A plurality of second flue gas pipes (5) are arranged above the burner (3) in the cavity (1), and the plurality of second flue gas pipes (5) are all connected to the burner (3).

6. The high-efficiency heat exchange gasifier according to claim 5, characterized in that: The plurality of second smoke pipes (5) are arranged in a staggered manner.

7. The high-efficiency heat exchange gasifier according to claim 5, characterized in that: A smoke exhaust pipe (6) is provided on one side of the cavity (1), and the smoke exhaust pipe (6) is connected to the plurality of first smoke pipes (4) and the plurality of second smoke pipes (5).

8. A high-efficiency heat exchange gasifier according to claim 7, characterized in that: The smoke exhaust port of the smoke exhaust pipe (6) is arranged on one side of the top end of the cavity (1).

9. The high-efficiency heat exchange gasifier according to claim 1, characterized in that: The cavity (1) is provided with a water spray pipeline (7) below the burner (3), and the water spray pipeline (7) is provided with a plurality of spray ports.

10. The high-efficiency heat exchange gasifier according to claim 9, characterized in that: It also comprises a water circulation device (8), the water inlet of the water circulation device (8) being connected to the top of the cavity (1), and the water outlet of the water circulation device (8) being connected to the water spray pipeline (7).

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