CN219956204U - Hot gas cooler with improved structure - Google Patents

Abstract

A hot gas cooler with an improved structure comprises a cooling box body, a tube array fixing plate, a cooling tube array, a cooling liquid circulation cooling device, a cooling liquid distribution device and a gas uniform distribution plate; the cooling box body is divided into an air inlet section, a tubular heat exchange section, a vapor-liquid collecting section and an air outlet section, wherein the vapor-liquid collecting section is arranged at the upper part of the tubular heat exchange section, and the air inlet section and the air outlet section are provided with an air inlet and an air outlet; the tube array fixing plates are respectively arranged among the air inlet section, the tube array heat exchange section and the air outlet section; the cooling tube array is arranged on the tube array heat exchange section, and two ends of the cooling tube array are arranged on the tube array mounting port of the tube array fixing plate; the cooling liquid circulation cooling device is arranged at the outer side of the vapor-liquid collecting section and is communicated with the cooling liquid distribution device arranged in the tube array heat exchange section; the gas uniform distribution plate is arranged in the gas inlet section and is parallel to and opposite to the adjacent tube array fixing plate at intervals. This allows for uniform distribution of the hot process gas to avoid bias currents in the cooling tube array.

Description

Hot gas cooler with improved structure

Technical Field

The present utility model relates to a hot gas cooler, and more particularly, to a hot gas cooler with an improved structure that can uniformly distribute hot process gas to avoid the formation of a bias flow in a cooling tube array.

Background

The hot gas cooler is very common equipment applied in the field of chemical production, and is one of equipment which plays an important role in the low-pressure melamine production process. The tube side of the hot gas cooler is generally referred to as the hot process gas exiting the reactor, while the shell side is generally referred to as the raw oil (conduction oil) which vaporizes to remove heat after absorbing heat, the vaporized raw oil vapor transferring heat load to the cooling device and then liquefying back into the hot gas cooler to form a closed self-circulation. However, the hot gas cooler at present generally has the problem that the hot process gas in a part of the cooling tube array is subjected to phase change due to uneven distribution of the hot process gas, so that the cooling tube array is blocked, and the smooth running of the production process is affected. In addition, condensed crude oil directly flows back to the hot gas cooler, which causes uneven refrigeration and partial supercooling of the cooling tube array, and the hot process gas in the cooling tube array is subjected to phase change to block the cooling tube array.

Therefore, how to provide a hot gas cooler capable of uniformly distributing the hot process gas to prevent the hot process gas from generating phase change in the cooling tube array has become one of the technical problems to be solved in the art.

Disclosure of Invention

The technical scheme aims to solve the technical problem of uniformly distributing the hot process gas with high-boiling byproducts into each cooling tube of the hot gas cooler so as to uniformly cool the hot process gas and prevent the cooling tube from being blocked, thereby ensuring the stable operation of the subsequent production process.

In order to solve the above technical problems, the present technical solution provides a hot gas cooler with an improved structure, which includes: the cooling box body, two tube array fixing plates, a plurality of cooling tube arrays, a cooling liquid circulation cooling device, a cooling liquid distribution device and a gas uniform distribution plate; the cooling box body is sealed and is divided into an air inlet section, a tube array heat exchange section, a vapor-liquid collection section and an air outlet section according to the process flow, wherein the air inlet section, the tube array heat exchange section and the air outlet section are arranged in a sequential manner in a horizontal direction, the vapor-liquid collection section is arranged at the upper part of the tube array heat exchange section and communicated with each other, and an air inlet and an air outlet communicated with the inside of the air inlet section are respectively arranged on the air inlet section and the air outlet section; the two tube array fixing plates are parallel and opposite to each other and are respectively and fixedly arranged between the air inlet section and the tube array heat exchange section and between the tube array heat exchange section and the air outlet section so as to seal and isolate the inner spaces of the air inlet section, the tube array heat exchange section and the air outlet section from each other; the two tube fixing plates are correspondingly provided with a plurality of tube array mounting openings, the cooling tubes are arranged in the tube array heat exchange section, and two ends of the cooling tubes are respectively arranged on the tube array mounting openings corresponding to the two tube array fixing plates so as to communicate the inner spaces of the air inlet section and the air outlet section through the cooling tubes; the cooling liquid circulating and cooling device is arranged at the outer side of the vapor-liquid collecting section and is communicated with the interior of the vapor-liquid collecting section; the cooling liquid distribution device is arranged in the tube array heat exchange section and is positioned above the plurality of cooling tube arrays; the cooling liquid inlet end of the cooling liquid circulating and cooling device penetrates through the side wall of the vapor-liquid collecting section and is communicated with the cooling liquid distributing device through the vapor-liquid collecting section and the tube array heat exchange section; the gas uniform distribution plate is fixedly arranged in the gas inlet section and is parallel to and opposite to the adjacent tube array fixing plates at a distance. Accordingly, the hot process gas to be cooled is injected into the air inlet section through the air inlet, the air flow of the hot process gas passing through the air uniform distribution plate is uniformly and stably distributed and flows into the cooling tubes by the adjustment of the air uniform distribution plate, the hot process gas in the cooling tubes continuously flows to the air outlet section in the cooling process under the action of micro positive pressure of the air inlet section, and the uniform and stable air flow in the flowing process can effectively reduce the probability of phase change in the cooling process of the hot process gas so as to prevent the cooling tubes from being blocked to form a bias flow phenomenon, thereby ensuring the stable performance of the subsequent production process.

As another implementation of the technical scheme, the gas uniform distribution plate is a porous distribution plate, and consists of a plane plate body and a plurality of regularly arranged through holes uniformly formed in the plane plate body, wherein the periphery of the gas uniform distribution plate is fixedly combined on the inner side wall of the air inlet section.

As another implementation of the technical scheme, the gas uniform distribution plate can also be a mesh plate type distribution plate, which is composed of a frame and at least one layer of metal woven mesh combined in the frame, and the gas uniform distribution plate is fixedly combined on the inner side wall of the air inlet section through the frame.

As another implementation of the technical scheme, the plurality of cooling tubulars are arranged in the tubulation heat exchange section at the same horizontal plane and at the same interval, the plurality of tubulation mounting ports are correspondingly arranged on the two tubulation fixing plates along the horizontal direction, and two ends of the cooling tubulars are respectively arranged on the tubulation mounting ports corresponding to the two tubulation fixing plates. In general, the temperature of the cooling liquid (crude oil) at the same height in the heat exchange section of the tube array is approximately the same, and the temperature of the cooling liquid at the lower layer is lower than that of the cooling liquid at the upper layer, so that the plurality of cooling tube arrays immersed in the cooling liquid and at the same horizontal plane (same height) can be uniformly cooled by the cooling liquid at the same temperature, and the phenomenon of uneven cooling caused by height difference of the cooling tube arrays can not occur.

As another implementation of the technical scheme, the cooling liquid distribution device is formed by splicing at least one transverse pipe and a plurality of longitudinal pipes on the same horizontal plane and communicating the two sides of the transverse pipes and the longitudinal pipes, the longitudinal pipes are positioned above the cooling pipes and are in one-to-one correspondence with the cooling pipes and are parallel to the cooling pipes, the lower side walls of the transverse pipes and the longitudinal pipes are provided with a plurality of liquid holes, the distance between the liquid holes of the longitudinal pipes is gradually increased from the adjacent air inlet section to the air outlet section, and the cooling liquid inlet end is connected to the splicing part of the transverse pipes and the longitudinal pipes. Considering that the temperature of the hot process gas is gradually reduced in the flowing cooling process after entering the cooling tube array, the temperature of the adjacent air inlet section in the tube array heat exchange section is higher than the temperature of the adjacent air outlet section, and the distribution amount of cooling liquid of the adjacent air inlet section in the tube array heat exchange section can be effectively increased by the structure that the liquid hole spacing on the longitudinal tube is gradually thinned along the direction towards the air outlet section, so that the temperature in the whole tube array heat exchange section is uniformly distributed, the cooling tube array is uniformly cooled, the phenomenon of partial supercooling (easy to occur in the adjacent air outlet section) is prevented, and the cooling tube array is further prevented from being blocked; in addition, the cooling liquid which is scattered downwards through the liquid holes of the cooling liquid distribution device is firstly distributed in the gas phase space of the heat exchange section of the tube array and carries out primary heat exchange with the cooling liquid which absorbs heat and is gasified, then the cooling liquid is scattered and falls down to further avoid the situation of local excessive cooling of the cooling tube array, and the gasified cooling liquid can smoothly rise into the gas-liquid collecting section through the gap between the transverse tube and the longitudinal tube to carry out subsequent cooling liquid condensation circulation operation.

As another implementation of the technical scheme, the upper side walls of the transverse tube and the longitudinal tube are respectively provided with a plurality of fixing parts which are fixedly connected with the upper inner side walls of the tube array heat exchange sections. Therefore, the strength of the mounting structure of the cooling liquid distribution device can be effectively enhanced.

As another implementation of the present technical solution, the coolant circulation cooling device includes: the cooling device comprises a cooling pipe and a deoxidizing water cooling sleeve, wherein one end of the cooling pipe is a steam outlet and is connected to the upper side wall of the steam-liquid collecting section in parallel and is communicated with the inside of the steam-liquid collecting section, the other end of the cooling pipe is a cooling liquid inlet end and penetrates into the lower side wall of the steam-liquid collecting section to be connected and communicated with a cooling liquid distribution device, the deoxidizing water cooling sleeve is fixedly sleeved on the cooling pipe, and the deoxidizing water cooling sleeve is provided with a deoxidizing water inlet and a deoxidizing water steam outlet. Therefore, the cooling liquid vaporized in the cooling pipe can be cooled and condensed in a high-efficiency liquid cooling circulation cooling mode, so that the high-efficiency and stable operation of the hot gas cooler is ensured; and the deoxidized steam which absorbs heat and evaporates into steam state can be discharged from the deoxidized steam outlet to be supplied to other process devices for use.

As another implementation of the technical scheme, part of the upper side wall of the tube array heat exchange section protrudes upwards to form a steam collecting part, the cooling liquid distribution device is arranged in the steam collecting part, and the steam liquid collecting section is arranged on the upper part of the steam collecting part and is communicated with the inside of the steam collecting part. Therefore, the distribution and installation of the cooling liquid distribution device are facilitated, and the gathering and aggregation of the vaporous cooling liquid after heat exchange and evaporation in the tube array heat exchange section are facilitated.

As another implementation of the technical scheme, at least one pressure relief opening communicated with the inside of the vapor-liquid collecting section is arranged on the outer side wall of the top of the vapor-liquid collecting section. Therefore, when the internal pressure of the hot gas cooler is overlarge in operation, the pressure can be released in time through the pressure release opening, so that the operation safety of the hot gas cooler is ensured.

Drawings

FIG. 1 is a side cross-sectional view of an embodiment of a hot gas cooler with an improved construction in accordance with the present utility model;

FIG. 2 is a schematic view of an embodiment of a gas distribution plate of the present utility model in cross section along section line A-A;

FIG. 3 is a schematic view of another embodiment of a gas distribution plate of the present utility model in cross-section along section line A-A;

fig. 4 is a schematic view showing a bottom view of the cooling liquid distribution device according to the present utility model.

Symbol description in the drawings: a hot gas cooler; 1, cooling a box body; 11 an air inlet section; a 111 inlet port; 12 tube heat exchange sections; 121 steam collecting part; 13, a vapor-liquid collecting section; 14, an air outlet section; 141 air outlet; 2 tube fixing plates; 3, cooling the tube array; 4 a cooling liquid circulation cooling device; 41 cooling pipes; 42 deoxidizing water cooling jacket; 43 exhaust port; 44 a coolant inlet port; a 45 deoxygenated water inlet; a 46 deoxygenated water vapor outlet; 5 a cooling liquid distribution device; 51 transverse tube; 52 longitudinal tubes; 53 liquid holes; 6, uniformly distributing the gas; 6' porous distribution plate; 61' plane plate body; 62' through holes; 6' a screen plate type distribution plate; 61 "frame; 62 "metal netting; and 7, a pressure relief port.

Detailed Description

The detailed description and technical content of the present utility model are described below with reference to the drawings, which are, however, provided for reference and illustration only and are not intended to limit the present utility model. And in the context of this specification any two or more embodiments of the utility model may be combined arbitrarily, and the resulting solution is part of the original disclosure of the specification, while also falling within the scope of the utility model.

Referring to FIG. 1, an embodiment of a hot gas cooler with an improved structure according to the present utility model is shown. The hot gas cooler 10 with improved structure (hereinafter referred to as hot gas cooler 10) comprises a cooling box 1, two tube fixing plates 2, a plurality of cooling tubes 3, a cooling liquid circulation cooling device 4, a cooling liquid distribution device 5 and a gas uniform distribution plate 6. The cooling box 1 is sealed and is divided into an air inlet section 11, a tubular heat exchange section 12, a vapor-liquid collecting section 13 and an air outlet section 14 according to the process flow, wherein the air inlet section 11, the tubular heat exchange section 12 and the air outlet section 14 are horizontally and sequentially connected and are in a capsule shape (as shown in the figure), but the cooling box can also be rectangular, cylindrical and the like, and the utility model is not limited to the above. The vapor-liquid collecting section 13 is disposed at the upper part of the heat exchange section 12 and is communicated with the inside of the heat exchange section 12, the air inlet section 11 and the air outlet section 14 are respectively provided with an air inlet 111 and an air outlet 141 communicated with the inside thereof, the air inlet 111 is used for introducing the hot process gas with high boiling point byproducts into the air inlet section 11, and the air outlet 141 is used for discharging the cooled hot process gas out of the hot gas cooler 10. The two tube fixing plates 2 are parallel and opposite to each other and respectively and fixedly arranged between the air inlet section 11 and the tube array heat exchange section 12 and between the tube array heat exchange section 12 and the air outlet section 14, so as to seal and isolate the inner spaces of the air inlet section 11, the tube array heat exchange section 12 and the air outlet section 14 from each other. The two tube fixing plates 2 are correspondingly provided with a plurality of tube mounting openings (not shown), the plurality of cooling tubes 3 are arranged in the tube heat exchange section 12, two ends of the cooling tubes are respectively arranged on the tube mounting openings corresponding to the two tube fixing plates 2 positioned at two sides, so that the inner spaces of the air inlet section 11 and the air outlet section 14 are communicated through the cooling tubes 3, the cooling tubes 3 can be formed by straight tubes or spiral tubes, and cooling fins (not shown) can be sleeved on the cooling tubes 3, so that the structure of the cooling tubes 3 is not limited. The cooling liquid circulation cooling device 4 is arranged outside the vapor-liquid collecting section 13 and is communicated with the inside of the vapor-liquid collecting section 13, in the utility model, the cooling liquid which is arranged in the tube array heat exchange section 12 to cool the cooling tube array 3 is raw oil, and the cooling liquid which is arranged in the cooling liquid circulation cooling device 4 to cool the raw oil evaporated into vapor state is deoxidized water. The cooling liquid distribution device 5 is arranged in the tube array heat exchange section 12 and is positioned above the plurality of cooling tube arrays 3. The cooling liquid inlet end 44 of the cooling liquid circulation cooling device 4 penetrates through the side wall of the vapor-liquid collecting section 13 and is connected and communicated with the cooling liquid distribution device 5 through the vapor-liquid collecting section 13 and the tubular heat exchange section 12. The gas uniform distribution plate 6 is fixedly arranged in the gas inlet section 11 and is parallel to and opposite to the adjacent tube array fixing plate 2 at a distance. In addition, in order to ensure the operation safety of the hot gas cooler 10, at least one pressure relief opening 7 communicated with the inside of the top outer side wall of the vapor-liquid collecting section 13 can be arranged on the top outer side wall of the vapor-liquid collecting section so as to perform pressure relief operation when the pressure in the hot gas cooler 10 is excessive.

More specifically, as shown in fig. 2, the gas uniform distribution plate 6 may be a porous distribution plate 6', which is formed by a planar plate body 61' and a plurality of regularly arranged through holes 62 'uniformly formed on the planar plate body 61', wherein the periphery of the gas uniform distribution plate is fixedly connected to the inner side wall of the gas inlet section 11. As shown in fig. 3, the gas uniform distribution plate 6 may also be a mesh plate type distribution plate 6", which is formed by a frame 61" and at least one layer of metal mesh 62 "combined in the frame 61", and is fixedly combined on the inner side wall of the gas inlet section 11 through the frame 61 ". The porous distribution plate 6' and the mesh plate distribution plate 6″ are existing devices for adjusting uniform distribution of air flow, and are widely used in chemical industry and similar fields.

In the utility model, the plurality of cooling tubes 3 are arranged in the tube heat exchange section 12 at the same horizontal plane and at the same interval, the two tube fixing plates 2 are correspondingly provided with the plurality of tube mounting ports along the horizontal direction, and two ends of the cooling tube 3 are respectively arranged on the tube mounting ports corresponding to the two tube fixing plates 2. Considering that, in general, the temperature of the cooling liquid (crude oil) at the same level in the tube array heat exchange section 12 is approximately the same, and the temperature of the cooling liquid at the lower layer is lower than that of the cooling liquid at the upper layer, the plurality of cooling tubes 3 immersed in the cooling liquid and at the same level (same height) can be uniformly cooled by the cooling liquid at the same temperature, and the phenomenon of uneven cooling due to the height difference of the plurality of cooling tubes 3 can not occur.

Referring to fig. 4, the cooling liquid distribution device 5 of the present utility model is a planar frame body formed by splicing at least one transverse pipe 51 and a plurality of longitudinal pipes 52 at the same horizontal plane and communicating with each other. The plurality of longitudinal pipes 52 are located above the plurality of cooling pipes 3 and are in one-to-one correspondence with and parallel to the cooling pipes 3. In the embodiment shown in fig. 4, there are five transverse tubes 51 and five longitudinal tubes 52, and there are five cooling tubes (not shown) corresponding to the transverse tubes 51 and the longitudinal tubes 52, but the number of the transverse tubes 51 and the longitudinal tubes 52 is not limited in the present utility model. The lateral tube 51 and the lower side wall of the longitudinal tube 52 are provided with a plurality of liquid holes 53, and the distance between the liquid holes 53 of the longitudinal tube 52 increases from the adjacent air inlet section 11 to the air outlet section 14. The coolant inlet port 44 is connected to the joint between the transverse tube 51 and the longitudinal tube 52, and in the present utility model, the joint between the transverse tube 51 and the longitudinal tube 52 and the connection between the coolant inlet port 44 may be performed by welding. The structure of the cooling liquid distribution device 5 considers that the temperature of the hot process gas in the flowing cooling process is gradually reduced after entering the cooling tube array 3, so that the temperature of the adjacent air inlet section 11 in the tube array heat exchange section 12 is higher than the temperature of the adjacent air outlet section 14, and the arrangement that the distance between the liquid holes 53 on the longitudinal tube 52 is gradually thinned along the direction towards the air outlet section 14 can effectively increase the distribution amount of the cooling liquid adjacent to the air inlet section 11 in the tube array heat exchange section 12, thereby ensuring that the temperature in the whole tube array heat exchange section 12 is uniformly distributed, ensuring that the cooling tube array 3 is uniformly cooled and preventing the phenomenon of local supercooling (easy to occur in the adjacent air outlet section) from happening, and further preventing the cooling tube array 3 from being blocked. In addition, the cooling liquid falling downwards through the liquid holes 53 of the cooling liquid distribution device 5 is firstly distributed in the gas phase space of the tube array heat exchange section 12, and is subjected to preliminary heat exchange with the cooling liquid with vaporized heat absorption and then falls down in a dispersed manner, so that the situation of local excessive cooling of the cooling tube array 3 can be further avoided, and the vaporized cooling liquid can smoothly rise into the gas-liquid collecting section 13 through the gap between the transverse tube 51 and the longitudinal tube 52 to perform subsequent cooling liquid condensation circulation operation. Furthermore, the upper side walls of the transverse tube 51 and the longitudinal tube 52 may be further provided with a plurality of fixing portions (not shown) for connecting and fixing with the upper inner side walls of the tubular heat exchange sections 12, so as to effectively enhance the strength of the mounting structure of the cooling liquid distribution device 5.

In the present utility model, the cooling liquid circulation cooling device 4 may be an air cooling structure or a water cooling structure, and in consideration of better cooling efficiency of the water cooling structure, the cooling liquid circulation cooling device 4 of the present utility model adopts a water cooling structure and uses deoxidized water as a coolant. As shown in fig. 1, the cooling liquid circulation cooling device 4 comprises a cooling pipe 41 and an deaeration water cooling sleeve 42, one end of the cooling pipe 41 is a steam outlet 43 and is connected with the upper side wall of the steam-liquid collecting section 13 in parallel and communicated with the inside of the steam-liquid collecting section 13, and the other end of the cooling pipe 41 is a cooling liquid inlet 44 and penetrates into the lower side wall of the steam-liquid collecting section 13 to be connected and communicated with the cooling liquid distribution device 5. The deaeration water cooling jacket 42 is fixedly sleeved on the cooling pipe 41, the deaeration water cooling jacket 42 is provided with a deaeration water inlet 45 and a deaeration water vapor outlet 46, deaeration water enters the deaeration water cooling jacket 42 through the deaeration water inlet 45 to cool and condense cooling liquid in the cooling pipe 41, and the deaeration water is evaporated into vapor through heat exchange and is discharged out of the deaeration water cooling jacket 42 through the deaeration water vapor outlet 46. The cooling liquid vaporized in the cooling pipe 41 can be cooled and condensed by an efficient liquid cooling circulation cooling mode, so that the efficient and stable operation of the hot gas cooler 10 is ensured. And the deoxygenated water vapor that absorbs heat and evaporates into a vapor state may also be vented from deoxygenated water vapor outlet 46 for use by other process devices.

In addition, as shown in fig. 1, part of the upper side wall of the tube array heat exchange section 12 may further be raised upwards to form a steam collecting portion 121, the cooling liquid distribution device 5 may be installed in the steam collecting portion 121, and the steam collecting section 13 is disposed at the upper portion of the steam collecting portion 121 and is communicated with the inside of the steam collecting portion 121. The structural improvement is not only convenient for the arrangement and installation of the cooling liquid distribution device 5, but also beneficial to the gathering and aggregation of the vaporous cooling liquid after heat exchange and evaporation in the tube array heat exchange section 12.

In summary, the hot process gas to be cooled generated by the reactor in the production process is injected into the gas inlet section through the gas inlet, and flows into the cooling tubes uniformly and stably through the adjustment of the gas uniform distribution plate, and the hot process gas in the cooling tubes continuously flows to the gas outlet section in the cooling process under the action of micro positive pressure of the gas inlet section, so that the probability of phase change in the cooling process of the hot process gas can be effectively reduced by uniform and stable gas flow in the flowing process, and the cooling tubes are prevented from being blocked to form a bias flow phenomenon, thereby ensuring the stable proceeding of the subsequent production process.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the scope of the utility model, and other equivalent variations using the inventive concepts are intended to fall within the scope of the utility model.

Claims (9)

1. A hot gas cooler with improved structure comprising: the cooling box body, two tube array fixing plates, a plurality of cooling tube arrays, a cooling liquid circulation cooling device and a cooling liquid distribution device; the cooling box body is sealed and is divided into an air inlet section, a tube array heat exchange section, a vapor-liquid collection section and an air outlet section according to the process flow, wherein the air inlet section, the tube array heat exchange section and the air outlet section are arranged in a sequential horizontal direction, the vapor-liquid collection section is arranged at the upper part of the tube array heat exchange section and communicated with each other, and an air inlet and an air outlet communicated with the inside of the air inlet section and the air outlet section are respectively arranged on the air inlet section and the air outlet section; the two tube array fixing plates are parallel and opposite to each other and are respectively and fixedly arranged between the air inlet section and the tube array heat exchange section and between the tube array heat exchange section and the air outlet section so as to seal and isolate the inner spaces of the air inlet section, the tube array heat exchange section and the air outlet section from each other; a plurality of tube array mounting ports are correspondingly formed in the two tube array fixing plates, the cooling tubes are arranged in the tube array heat exchange section, and two ends of the cooling tubes are respectively arranged on the tube array mounting ports corresponding to the two tube array fixing plates so as to communicate the inner spaces of the air inlet section and the air outlet section through the cooling tubes; the cooling liquid circulating and cooling device is arranged outside the vapor-liquid collecting section and is communicated with the inside of the vapor-liquid collecting section; the cooling liquid distribution device is arranged in the tube array heat exchange section and is positioned above the plurality of cooling tube arrays; the cooling liquid inlet end of the cooling liquid circulating and cooling device penetrates through the side wall of the vapor-liquid collecting section and is communicated with the cooling liquid distribution device through the vapor-liquid collecting section and the tube array heat exchange section; characterized by further comprising: a gas uniform distribution plate; the gas uniform distribution plate is fixedly arranged in the gas inlet section and is parallel to and opposite to the adjacent shell and tube fixing plate at intervals.

2. The hot gas cooler according to claim 1, wherein the gas uniform distribution plate is composed of a planar plate body and a plurality of regularly arranged through holes uniformly formed in the planar plate body, and the periphery of the gas uniform distribution plate is fixedly combined with the inner side wall of the gas inlet section.

3. The hot gas cooler according to claim 1, wherein the gas uniform distribution plate is formed by a frame and at least one layer of metal weave incorporated into the frame, the gas uniform distribution plate being fixedly attached to the inner side wall of the inlet section by the frame.

4. The hot gas cooler according to claim 1, wherein the plurality of cooling tubes are disposed in the tube heat exchange section at the same horizontal plane and at the same interval, the plurality of tube mounting openings are correspondingly formed in the horizontal direction on the two tube fixing plates, and both ends of the cooling tubes are respectively disposed on the tube mounting openings corresponding to the two tube fixing plates.

5. The hot gas cooler according to claim 4, wherein the cooling liquid distribution device is formed by splicing at least one transverse pipe and a plurality of longitudinal pipes on the same horizontal plane and communicating with each other, the plurality of longitudinal pipes are positioned above the plurality of cooling pipes and are in one-to-one correspondence and parallel with the cooling pipes, a plurality of liquid holes are formed in the lower side walls of the transverse pipe and the longitudinal pipes, the distance between the plurality of liquid holes of the longitudinal pipes is gradually increased from the direction close to the air inlet section to the air outlet section, and the cooling liquid inlet end is connected to the splicing position of the transverse pipe and the longitudinal pipes.

6. The hot gas cooler according to claim 5, wherein the upper side walls of the transverse and longitudinal pipes are each provided with a plurality of fixing portions fixedly connected to the upper inner side walls of the heat exchange sections of the row of pipes.

7. The hot gas cooler according to claim 1, wherein the coolant-circulating cooling means comprises: the cooling device comprises a cooling pipe and an deoxidization water cooling sleeve, wherein one end of the cooling pipe is a steam outlet and is connected with the upper side wall of the steam-liquid collecting section in parallel and is communicated with the inside of the steam-liquid collecting section, the other end of the cooling pipe is a cooling liquid inlet end and penetrates into the lower side wall of the steam-liquid collecting section to be connected and communicated with the cooling liquid distribution device, the deoxidization water cooling sleeve is fixedly sleeved on the cooling pipe, and the deoxidization water cooling sleeve is provided with a deoxidization water inlet and a deoxidization water vapor outlet.

8. The hot gas cooler according to claim 1, wherein part of the upper side wall of the tube array heat exchange section is upwardly protruded to form a steam collecting portion, the cooling liquid distribution device is installed in the steam collecting portion, and the steam collecting section is arranged at the upper portion of the steam collecting portion and is communicated with the inside of the steam collecting portion.

9. The hot gas cooler according to claim 1, wherein the top outer side wall of the vapor-liquid collecting section is provided with at least one pressure relief port communicating with the interior of the vapor-liquid collecting section.