CN219995317U

CN219995317U - Vibration-proof, hydrogen corrosion-proof, high-temperature and high-pressure combined type synthetic ammonia heat recovery equipment

Info

Publication number: CN219995317U
Application number: CN202321071698.7U
Authority: CN
Inventors: 卢健; 王雪林
Original assignee: Nanjing Jutuo Chemical Technology Co ltd
Current assignee: Nanjing Jutuo Chemical Technology Co ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-11-10
Anticipated expiration: 2033-05-06

Abstract

The utility model discloses vibration-proof, hydrogen corrosion-proof, high-temperature and high-pressure combined synthetic ammonia heat recovery equipment, which comprises a waste heat boiler and a boiler feed water heater; the waste heat boiler comprises a boiler shell, a boiler chamber and a steam outlet pipe; the boiler feed water heater comprises a heat exchanger shell, a heat exchange tube, a left end enclosure and a right end enclosure; the heat exchanger shell consists of a left cylinder, a middle cylinder and a right cylinder which are connected in sequence, the middle cylinder is axially and fixedly sleeved in the furnace shell through a fixed plate assembly, the top of the middle cylinder is provided with a water outlet, the bottom of the middle cylinder is provided with a water inlet, and the water outlet and the water inlet are communicated with the furnace chamber. According to the utility model, the boiler feed water heater and the waste heat boiler are combined into a whole, a heated boiler feed water pipeline is omitted, the loss of heat in the pipeline is reduced, and the heat exchange efficiency is improved; meanwhile, the vibration problem of the boiler water supply pipeline caused by vaporization is solved.

Description

Vibration-proof, hydrogen corrosion-proof, high-temperature and high-pressure combined type synthetic ammonia heat recovery equipment

Technical Field

The utility model relates to the technical field of synthetic ammonia heat recovery, in particular to vibration-proof, hydrogen corrosion-proof and high-temperature and high-pressure combined synthetic ammonia heat recovery equipment.

Background

Synthesis ammonia production begins with the production of gas and is accompanied by a thermal process until ammonia is synthesized. The heat released in the production process of the synthetic ammonia is reasonably utilized and controlled, so that not only can the energy consumption in the production be saved and the production cost be reduced, but also the co conversion rate and the ammonia synthesis rate can be improved, the heat is utilized by waste heat, and the heat is controlled by chemical reaction.

The traditional method for recovering the reaction heat of the synthetic ammonia is to convert the high-temperature synthetic gas at the outlet of the synthetic tower into hot water or steam through a waste heat boiler, a heat exchanger, a water cooler and other devices in sequence so as to recycle the reaction heat energy. For example, a heat recovery device and a heat recovery process of a synthetic ammonia system are disclosed in Chinese patent CN 108844054A; the system comprises an ammonia synthesis tower, wherein a synthesis gas pipeline of the ammonia synthesis tower is connected with an inlet of a heat exchanger through a waste heat boiler tube side inlet, a first outlet of the waste heat boiler tube side and a tube side of a boiler water supply preheater, and a second outlet of the waste heat boiler tube side is connected with the inlet of the heat exchanger through a resistance balancing device; the shell side inlet of the boiler feed water preheater is connected with a desalted water pipeline, the shell side outlet of the boiler feed water preheater is connected with the water supplementing port of the steam drum, the air inlet and the water returning port of the steam drum are respectively connected with the waste heat boiler shell side, and the top of the steam drum is connected with a steam pipe network. The traditional synthetic ammonia reaction heat recovery method has low heat exchange efficiency and large heat loss.

Chinese patent CN110500904a discloses an integrated ammonia synthesis heat recovery device comprising a first tube train heat exchanger and a second tube train heat exchanger connected to each other, the first tube train heat exchanger having a superheated steam outlet and a return air inlet; the second tube-in-tube heat exchanger is divided into a steam generation section and a preheating section; the tube side of the second tube array heat exchanger is communicated with the tube side of the first tube array heat exchanger; the shell side of the second tube array heat exchanger is not communicated with the shell side of the first tube array heat exchanger; a steam drum communicated with the steam generation section is arranged above the second tube nest heat exchanger, and the steam drum is communicated with the shell side of the steam generation section of the second tube nest heat exchanger through a rising pipe and a falling pipe; the top of the steam drum is provided with a steam outlet which is communicated with the air return port of the first tube array heat exchanger. The technical defects of the patent are as follows: 1) The heat exchange tube produces strong vibration after heating the water supply and vaporization, which affects the safe use of the equipment; 2) The high-temperature water has certain heat loss in the ascending pipe and the descending pipe, so that the heat recovery efficiency is reduced; 3) The low-density water and the high-density water flow in one cavity, and the heat transfer efficiency is low.

Disclosure of Invention

The utility model provides vibration-proof, hydrogen corrosion-proof, high-temperature and high-pressure combined type ammonia synthesis heat recovery equipment, which aims to solve the technical problems of the existing integrated ammonia synthesis heat recovery equipment.

The technical scheme adopted by the utility model is as follows:

an anti-vibration and anti-hydrogen corrosion high-temperature and high-pressure combined synthetic ammonia heat recovery device comprises a waste heat boiler and a boiler feed water heater;

the waste heat boiler comprises a furnace shell extending along the X-axis direction, a furnace chamber surrounded by the furnace shell, and a steam outlet pipe arranged at the top center of the furnace shell and communicated with the furnace chamber;

the boiler feed water heater comprises a heat exchanger shell extending along the X-axis direction, a heat exchange tube arranged in the heat exchanger shell, and a left sealing head and a right sealing head for sealing two ends of the heat exchanger shell; the heat exchanger shell consists of a left cylinder, a middle cylinder and a right cylinder which are sequentially connected, the middle cylinder is axially and fixedly sleeved in the furnace shell through a fixed plate assembly, the top of the middle cylinder is provided with a water outlet, the bottom of the middle cylinder is provided with a water inlet, and the water outlet and the water inlet are both communicated with the furnace chamber; one end of the left cylinder extends into the furnace shell and is in axial non-contact connection with the middle cylinder, and the other end of the left cylinder is connected with the left sealing head through the left tube plate; one end of the right cylinder extends into the furnace shell and is in axial non-contact connection with the middle cylinder, and the other end of the right cylinder is connected with the right seal head through the right tube plate; two ends of the heat exchange tube respectively pass through the left tube plate and the right tube plate in a sealing way and are communicated with the left end socket cavity and the right end socket cavity; the left end enclosure cavity is internally provided with a high-temperature air guide assembly and a synthetic gas outlet pipe, the synthetic gas outlet pipe is communicated with the inner cavity of the heat exchange pipe through the high-temperature air guide assembly, the right end enclosure cavity is provided with a heat exchange reaction gas outlet, a water supply heating sleeve is axially sleeved in the right cylinder, one end of the water supply heating sleeve is open and one end of the water supply heating sleeve is closed by an isolation tube plate, the open end is close to the right tube plate and is in sealing connection with the right cylinder through an annular sealing plate, a water supply heating cavity is formed between the water supply heating sleeve and the right tube plate, one end of the water supply heating cavity close to the right tube plate is provided with a boiler water supply inlet, the other end of the water supply heating cavity is provided with a boiler water supply outlet, the boiler water supply outlet is connected with a water distribution pipe, the water distribution pipe is arranged below the middle cylinder, and a plurality of water distribution holes communicated with a furnace chamber are formed in the water distribution pipe.

Further, an arc-shaped baffle cover is arranged in the furnace chamber and is arranged above the middle cylinder, the furnace chamber is divided into an upper cavity and a lower cavity, the upper cavity is communicated with the steam outlet pipe, and the lower cavity is communicated with the upper cavity through channels around the arc-shaped baffle cover.

Further, the middle cylinder is positioned at the middle lower part of the furnace chamber, the water outlet at the top of the middle cylinder is connected with an overflow cover, the top of the overflow cover is open, the open end is contracted inwards to form a steam-water mixture overflow shrinkage cavity, and the steam-water mixture overflow shrinkage cavity is positioned at the upper part of the furnace chamber and the top surface of the steam-water mixture overflow shrinkage cavity is lower than the bottom surface of the arc-shaped baffle cover.

Further, an upper liquid level meter and a lower liquid level meter are arranged in the furnace shell, the upper liquid level meter is arranged between the top surface of the steam-water mixture overflow shrinkage cavity and the bottom surface of the arc-shaped baffle cover, the lower liquid level meter is arranged between the top surface of the steam-water mixture overflow shrinkage cavity and the top surface of the fixed plate assembly, and the surface continuous drain pipe is arranged between the upper liquid level meter and the lower liquid level meter.

Further, a plurality of blow-down pipes are arranged at the bottom of the furnace shell.

Further, an upper separating cylinder is arranged on the steam outlet pipe, and a silk screen foam remover is arranged in the upper separating cylinder.

Further, the fixed plate assembly has a plurality of groups, and every fixed plate assembly of group all includes left backup pad and the right backup pad that the symmetry set up, has all offered a plurality of drain hole in left backup pad and the right backup pad.

Further, two water distribution pipes are symmetrically arranged on the left support plate and the right support plate.

Further, the high-temperature air guide assembly comprises a guide cylinder and a conical guide cover, wherein the guide cylinder is axially arranged in the cavity of the left end socket, one end of the guide cylinder is sealed through an end cover, the other end of the guide cylinder is connected with the conical guide cover, the conical guide cover is arranged on the left tube plate, and the synthetic gas outlet tube is inserted into the cavity of the left end socket in a sealing way and is connected with the guide cylinder through an expansion joint.

Further, the left end socket, the high-temperature air guide assembly and the left tube plate are all made of ALLOY690 materials, and the inner side wall of the cavity of the left end socket is overlaid with an Inconel690 ALLOY layer resistant to hydrogen corrosion.

The utility model has the beneficial effects that:

1. the boiler feed water heater and the waste heat boiler are combined into a whole, a heated boiler feed water pipeline is omitted, the loss of heat in the pipeline is reduced, and the heat exchange efficiency is improved; meanwhile, the vibration problem of the boiler water supply pipeline caused by vaporization is solved.

2. The high-temperature part of the feed water heater of the boiler is provided with a high-temperature cavity (namely a left end socket cavity) and a high-temperature gas channel (namely a high-temperature gas diversion component) for protection, and the high-temperature heat exchange tube head is provided with a hydrogen corrosion resistant material for protection; by adopting the protection measures, the corrosion resistance of the equipment can be effectively improved, and the service life of the equipment can be prolonged.

3. The outlet water of the water supply section of the boiler feed water heater is distributed by a water distribution pipe, so that the vibration of the heat exchange pipe can be effectively prevented.

4. The boiler feed water heater is internally provided with different cavities of low-density water and high-density water, so that saturated water flows in multiple cycles in the shell pass, and the heat transfer efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of a combined vibration, hydrogen corrosion and high temperature and high pressure ammonia heat recovery device.

Fig. 2 is a view from A-A in fig. 1.

Fig. 3 is an enlarged view of a portion of the left head of fig. 1.

FIG. 4 is a schematic flow diagram of a combined vibration, hydrogen corrosion and high temperature high pressure ammonia heat recovery device of the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solution of the present utility model will be clearly and completely described with reference to the accompanying drawings and a preferred embodiment.

Referring to fig. 1 to 4, an anti-vibration, anti-hydrogen corrosion, high temperature and high pressure combined type synthetic ammonia heat recovery apparatus includes a waste heat boiler 100 and a boiler feedwater heater 200.

The waste heat boiler 100 is supported on the ground through a movable support A101 and comprises a cylindrical boiler shell 110 extending along the X-axis direction, a steam outlet pipe 113 is arranged in the center of the top of the boiler shell, an upper separating cylinder 115 is arranged on the steam outlet pipe 113, and a silk screen foam remover 116 is arranged in the upper separating cylinder and is used for removing water mist carried by steam and improving the steam quality. An arc-shaped baffle cover 114 is arranged in the furnace chamber 112 enclosed by the cylindrical furnace shell 110, the arc-shaped baffle cover 114 is supported at the top of the furnace chamber 112 through a supporting plate 1141 and is covered above the middle cylinder 212, the arc-shaped baffle cover 114 divides the top part of the furnace chamber 112 into an upper cavity 1121 and a lower cavity 1122, the upper cavity 1121 is communicated with the steam outlet pipe 113, and the lower cavity 1122 is communicated with the upper cavity 1121 through a steam channel between the supporting plates 1141. The center of the arc-shaped baffle 114 coincides with the center of the cavity 112. The arc-shaped baffle cover 114 can prevent separated steam from being directly discharged from the steam outlet pipe 113, and small liquid drops carried in the steam impact on the arc-shaped baffle cover 114, so that the steam-water separation effect is further improved.

The boiler feedwater heater 200 is disposed on the ground through a movable support B201 and a movable support C202, and comprises a heat exchanger housing extending along the X-axis direction, and heat exchange tubes 220 disposed in the heat exchanger housing for sealing a left seal head 230 and a right seal head 240 at both ends of the heat exchanger housing. Cradle B201 is supported below left head 230 and cradle C202 is supported below right head 240.

The heat exchanger housing is composed of a left cylinder 211, a middle cylinder 212 and a right cylinder 213 which are sequentially connected, the middle cylinder 212 is supported in the cavity 112 by the fixing plate assembly 290, and the center height of the middle cylinder 212 is lower than the center height of the cylindrical furnace shell 110. The middle cylinder 212 is composed of a left side shell and a right side shell, the tops of the left side shell and the right side shell are not connected to form a water outlet, the bottoms of the left side shell and the right side shell are not connected to form a water inlet, the water outlet is connected with an overflow cover 214, the top of the overflow cover 214 is open, the open end is contracted inwards to form a steam-water mixture overflow shrinkage mouth, and the top surface of the steam-water mixture overflow shrinkage mouth is higher than the top surface of the fixed plate assembly 290 and lower than the bottom surface of the arc-shaped baffle cover 114. The arrangement of the steam-water mixture overflow shrinkage mouth can enable the flow speed of the steam-water mixture which overflows the shrinkage mouth to be increased, and the steam-water mixture which flows rapidly can be quickly separated after entering the furnace chamber 112 with suddenly increased volume. The fixed plate assembly 290 has several sets and is uniformly distributed in the axial direction. Each set of fixing plate assemblies 290 comprises a left support plate 291 and a right support plate 292 which are symmetrically arranged, wherein the left support plate 291 and the right support plate 292 are saddle-shaped, the inner circumferential surface of the left support plate 291 is radially fixed on the left side shell of the middle cylinder 212, and the outer circumferential surface of the left support plate 291 is slidably connected with the inner wall of the cylindrical furnace shell 110; the inner circumferential surface of the right support plate 292 is radially fixed on the right side shell of the middle cylinder 212, the outer circumferential surface of the right support plate 292 is slidably connected with the inner wall of the cylindrical furnace shell 110, and a plurality of liquid guide holes 293 are formed in each of the left support plate 291 and the right support plate 292. The fixing plate assembly 290 plays a role of disturbing the flow of the high-density saturated water while supporting the middle cylinder 212, so that the high-density saturated water after being separated is fully mixed with the boiler feed water entering from the boiler feed water outlet 273, and the heat exchange effect is improved.

The side wall of the cylindrical furnace shell 110 is provided with an upper liquid level meter 102, a lower liquid level meter 103 and a surface continuous blow-down pipe 104, the mounting port of the upper liquid level meter 102 is positioned between the top surface of the steam-water mixture overflow shrinkage mouth and the bottom surface of the arc-shaped baffle cover 114, the mounting port of the lower liquid level meter 103 is positioned between the top surface of the steam-water mixture overflow shrinkage mouth and the top surface of the fixed plate assembly 290, and the surface continuous blow-down pipe 104 is arranged between the upper liquid level meter 102 and the lower liquid level meter 103. The bottom of the cylindrical furnace shell 110 is provided with a plurality of blow-down pipes 105. An upper liquid level meter 102 and a lower liquid level meter 103 are arranged, so that the water level of saturated water of the boiler in the running process is monitored in real time, and internal dry combustion is prevented.

The left cylinder 211 and the middle cylinder 212 are axially connected in a non-contact manner, namely an expansion joint is arranged between the left cylinder 211 and the middle cylinder 212, and the other end of the left cylinder 211 extends out of the furnace shell 110 and is connected with the left sealing head 230 through the left tube plate 250. The right cylinder 213 is connected with the middle cylinder 212 in an axial non-contact manner, namely an expansion joint is arranged between the right cylinder 213 and the middle cylinder 212, and the other end of the right cylinder 213 extends out of the furnace shell 110 and is connected with the right seal head 240 through the right tube plate 260. The left seal head 230 and the left tube plate 250 form a left seal head cavity 231, the right seal head 240 and the right tube plate 260 form a right seal head cavity 241, and two ends of the heat exchange tube 220 respectively pass through the left tube plate 250 and the right tube plate 260 in a sealing way and are communicated with the left seal head cavity 231 and the right seal head cavity 241.

The high-temperature air guide assembly 400 and the synthetic air outlet pipe 300 are arranged in the left end socket cavity 231, the high-temperature air guide assembly 400 comprises an air guide cylinder 410 and a conical air guide sleeve 420 which are axially and hermetically connected, the synthetic air outlet pipe comprises a pipe body 310 and a pipe flange 320, the pipe body 310 is hermetically connected with the left end socket 230 through the pipe flange 320, the pipe body 310 stretches into the left end socket cavity 231 and is connected with the air guide cylinder 410 through an expansion joint, the other side of the air guide cylinder 410 is sealed by an end cover, the conical air guide sleeve 420 is covered on the left tube plate 250, and the conical air guide sleeve is communicated with the heat exchange tube 220 and the circular air guide cavity of the air guide cylinder 410. The left end socket cavity 231 is provided with a high-temperature cavity temperature measuring port 232, the circular diversion cavity of the diversion cylinder 410 is provided with a waste pot inlet gas temperature measuring port 402, and the conical diversion cavity of the conical diversion cover 420 is provided with a waste pot inlet gas pressure measuring port 401. The left end socket 230, the high-temperature air guide assembly 400 and the left tube plate 250 are all made of ALLOY690 materials with good high-temperature resistance, and the inner side wall of the left end socket cavity 231 is overlaid with an Inconel690 ALLOY layer with hydrogen corrosion resistance. By providing the high temperature gas diversion assembly 400 and the hydrogen corrosion resistant alloy layer, the corrosion resistance of the equipment can be effectively improved, the service life of the equipment can be prolonged, and the manufacturing cost of the equipment can be reduced.

The right end enclosure cavity 241 is provided with a heat exchange reaction gas outlet 403.

The right cylinder 213 is axially sleeved with a water supply heating sleeve 270, one end of the water supply heating sleeve 270 is open, one end of the water supply heating sleeve 270 is closed by an isolating tube plate, the open end is close to the right tube plate 260 and is in sealing connection with the right cylinder 213 through an annular sealing plate, a water supply heating cavity 271 is formed between the water supply heating sleeve 270 and the right tube plate 260, and single arched baffle plates 274 are alternately arranged in the water supply heating cavity 271. The bottom of the water supply heating cavity 271 near one end of the right tube plate 260 is provided with a boiler water supply inlet 272, as shown in fig. 1, the boiler water supply inlet 272 is positioned between the rightmost single arched baffle plate and the right tube plate 260, the other end of the bottom of the water supply heating cavity 271 is provided with a boiler water supply outlet 273, as shown in fig. 1, the boiler water supply inlet 273 is positioned between the leftmost single arched baffle plate and the bottom cover of the water supply heating sleeve 270, the boiler water supply outlet 273 is connected with a water distribution pipe 280, the water distribution pipe 280 extends along the bottom axial direction of the furnace chamber 112 and penetrates through the lower end of the fixed plate assembly 290, and a plurality of water distribution holes 281 are arranged on the water distribution pipe 280. In this embodiment, two water distribution pipes 280 are symmetrically distributed. The single arched baffle 274 serves to disturb the boiler feed water and enhance the heat exchange effect. The heated boiler feed water is uniformly distributed at the bottom of the furnace chamber 112 through the water distribution pipe 280, enters the middle cylinder 212 after being mixed with the high-density saturated water after steam distribution, and is heated and vaporized by the heat exchange pipe 220 again, so that the impact on the heat exchange pipe 220 can be effectively reduced, and the vibration of the heat exchange pipe 220 is reduced.

The working principle of the device is as follows:

referring to fig. 4, boiler feed water enters the feed water heating cavity 271 through the boiler feed water inlet 272, flows through the feed water heating cavity 271 in the axial direction, is heated by the heat exchange tube 220, and is discharged into the water distribution tube 280 from the boiler feed water outlet 273, the heated boiler feed water in the water distribution tube 280 is uniformly distributed at the bottom of the furnace chamber 112 of the waste heat boiler 100 through the water distribution holes 281, then enters the middle cylinder 212 from the water inlet at the bottom of the middle cylinder 212, low-density saturated water entering the middle cylinder 212 flows through the heat exchange tube 220 in the radial direction upwards to be heated again to form a steam-water mixture, and the steam-water mixture overflows from the steam-water mixture overflow shrinkage mouth at the top of the overflow cover 214 and flows out into the furnace chamber 112 to realize steam-water separation; the steam of the saturated water after preliminary separation rises into a lower cavity 1122 at the top of the furnace chamber, then enters an upper cavity 1121 from the periphery of the arc-shaped baffle cover 114, finally enters an upper separating cylinder 115 from a steam outlet pipe 113, and is discharged after removing water mist through a wire mesh demister 116; the high-density saturated water after steam separation flows downwards in the furnace chamber 112 and is mixed with the boiler feed water entering from the boiler feed water outlet 273, and the circulating flow improves the heat exchange efficiency;

the high-temperature synthesis gas from the synthesis tower enters the guide cylinder 410 through the synthesis gas outlet pipe 310, is distributed into the heat exchange tube 220 through the conical guide cylinder 420, flows through the tube pass of the heat exchange tube 220 to reduce the temperature, enters the right seal head cavity 241, and is discharged from the heat exchange reaction gas outlet 403.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model and remain within the scope of the utility model.

Claims

1. An anti-vibration, anti-hydrogen corrosion and high-temperature and high-pressure combined type synthetic ammonia heat recovery device is characterized by comprising a waste heat boiler (100) and a boiler feed water heater (200); the waste heat boiler (100) comprises a furnace shell (110) extending along the X-axis direction, a furnace chamber (112) surrounded by the furnace shell, and a steam outlet pipe (113) arranged at the top center of the furnace shell and communicated with the furnace chamber (112); the boiler feedwater heater (200) comprises a heat exchanger shell extending along the X-axis direction, a heat exchange tube (220) arranged in the heat exchanger shell, and a left seal head (230) and a right seal head (240) for sealing two ends of the heat exchanger shell; the heat exchanger shell consists of a left cylinder (211), a middle cylinder (212) and a right cylinder (213) which are sequentially connected, the middle cylinder (212) is axially and fixedly sleeved in the furnace shell (110) through a fixed plate assembly (290), the top of the heat exchanger shell is provided with a water outlet, the bottom of the heat exchanger shell is provided with a water inlet, and the water outlet and the water inlet are both communicated with the furnace chamber (112); one end of the left cylinder (211) extends into the furnace shell (110) and is in axial non-contact connection with the middle cylinder (212), and the other end of the left cylinder is connected with the left seal head (230) through the left tube plate (250); one end of the right cylinder (213) extends into the furnace shell (110) and is in axial non-contact connection with the middle cylinder (212), and the other end of the right cylinder is connected with the right seal head (240) through the right tube plate (260); two ends of the heat exchange tube (220) respectively pass through the left tube plate (250) and the right tube plate (260) in a sealing way and are communicated with the left end socket cavity (231) and the right end socket cavity (241); the left end socket cavity (231) is internally provided with a high-temperature air guide assembly (400) and a synthetic gas outlet pipe (300), the synthetic gas outlet pipe (300) is communicated with the inner cavity of the heat exchange pipe (220) through the high-temperature air guide assembly (400), the right end socket cavity (241) is provided with a heat exchange reaction gas outlet (403), the right cylinder (213) is axially sleeved with a water supply heating sleeve (270), one end of the water supply heating sleeve (270) is open and one end is sealed by an isolation tube plate, the open end is close to the right tube plate (260) and is in sealing connection with the right cylinder (213) through an annular sealing plate, a water supply heating cavity (271) is formed between the water supply heating sleeve (270) and the right tube plate (260), one end of the water supply heating cavity (271) close to the right tube plate (260) is provided with a boiler water supply inlet (272), the other end of the water supply heating cavity is provided with a boiler water supply outlet (273), the boiler water supply outlet (273) is connected with a water distribution pipe (280), the water distribution pipe (280) is arranged below the middle cylinder (212), and a plurality of water distribution holes (281) communicated with the furnace chamber (112) are arranged on the water distribution pipe (280).

2. The vibration-proof, hydrogen corrosion-proof and high-temperature and high-pressure combined type synthetic ammonia heat recovery device according to claim 1, wherein an arc-shaped baffle cover (114) is arranged in the furnace chamber (112), the arc-shaped baffle cover (114) is arranged above the middle cylinder (212) in a covering manner, the furnace chamber (112) is divided into an upper cavity (1121) and a lower cavity (1122), the upper cavity (1121) is communicated with the steam outlet pipe (113), and the lower cavity (1122) is communicated with the upper cavity (1121) through channels around the arc-shaped baffle cover (114).

3. The vibration-proof, hydrogen corrosion-proof, high-temperature and high-pressure combined type synthetic ammonia heat recovery device according to claim 1, wherein the middle cylinder (212) is positioned at the middle lower part of the furnace chamber (112), the water outlet at the top of the middle cylinder (212) is connected with the overflow cover (214), the top of the overflow cover (214) is open, the open end is contracted inwards to form a steam-water mixture overflow shrinkage mouth, and the steam-water mixture overflow shrinkage mouth is positioned at the upper part of the furnace chamber (112) and the top surface of the steam-water mixture overflow shrinkage mouth is lower than the bottom surface of the arc-shaped baffle cover (114).

4. The vibration-proof, hydrogen corrosion-proof and high-temperature and high-pressure combined type synthetic ammonia heat recovery device according to claim 3, wherein an upper liquid level meter (102), a lower liquid level meter (103) and a surface continuous blow-down pipe (104) are arranged in the furnace shell (110), the upper liquid level meter (102) is arranged between the top surface of the steam-water mixture overflow shrinkage mouth and the bottom surface of the arc-shaped baffle cover (114), the lower liquid level meter (103) is arranged between the top surface of the steam-water mixture overflow shrinkage mouth and the top surface of the fixed plate assembly (290), and the surface continuous blow-down pipe (104) is arranged between the upper liquid level meter (102) and the lower liquid level meter (103).

5. The vibration-proof, hydrogen corrosion-proof, high temperature and high pressure combined type synthetic ammonia heat recovery apparatus according to claim 4, wherein a plurality of blow-down pipes (105) are provided at the bottom of the furnace shell (110).

6. The vibration-proof, hydrogen corrosion-proof, high-temperature and high-pressure combined type synthetic ammonia heat recovery apparatus according to claim 1, wherein an upper separation cylinder (115) is installed on the steam outlet pipe (113), and a wire mesh demister (116) is installed in the upper separation cylinder (115).

7. The vibration-proof, hydrogen corrosion-proof, high-temperature and high-pressure combined type synthetic ammonia heat recovery device according to claim 1, wherein the fixed plate assembly (290) is provided with a plurality of groups, each group of fixed plate assembly comprises a left supporting plate (291) and a right supporting plate (292) which are symmetrically arranged, and a plurality of liquid guide holes (293) are formed in the left supporting plate (291) and the right supporting plate (292).

8. The vibration-proof, hydrogen corrosion-proof, high temperature and high pressure combined type synthetic ammonia heat recovery device according to claim 7, wherein two water distribution pipes (280) are symmetrically arranged on the left support plate (291) and the right support plate (292).

9. The vibration-proof, hydrogen corrosion-proof, high-temperature and high-pressure combined type synthetic ammonia heat recovery device according to claim 1, wherein the high-temperature air guide assembly (400) comprises an air guide cylinder (410) and a conical air guide sleeve (420), the air guide cylinder (410) is axially arranged in the left end socket cavity (231), one end of the air guide cylinder is sealed by an end cover, the other end of the air guide cylinder is connected with the conical air guide sleeve (420), the conical air guide sleeve (420) is covered on the left tube plate (250), and the synthetic gas outlet tube (300) is inserted into the left end socket cavity (231) in a sealing mode and is connected with the air guide cylinder (410) through an expansion joint.

10. The vibration-proof, hydrogen corrosion-proof, high-temperature and high-pressure combined type synthetic ammonia heat recovery device according to claim 1, wherein the left end socket (230), the high-temperature air guide assembly (400) and the left tube plate (250) are all made of ALLOY690 materials, and an Inconel690 ALLOY layer with hydrogen corrosion resistance is deposited on the inner side wall of the cavity (231) of the left end socket.