Temperature-control self-heating conversion purification furnace

Abstract

The utility model discloses a temperature control self-heating conversion purification furnace which comprises a barrel, two ends of the barrel are open, a partition plate is arranged in the barrel, two ends of the barrel are respectively connected with an upper seal head and a lower seal head, the upper seal head and the partition plate form an upper cavity, the lower seal head and the partition plate form a lower cavity, and a first elliptical seal head is fixedly connected onto the partition plate to form a first cavity which is positioned in the upper cavity; a gas distributor is arranged at the bottom of the first cavity; the top end of the upper sealing head is sequentially communicated with a connecting pipe and an outer pipe which are fixedly connected, and the outer wall of the outer pipe is provided with a superheated gas inlet; the inner pipe is sleeved in the outer pipe and the connecting pipe; through effective combination of a detoxicating agent and a catalyst, sleeve combination of inlet raw gas and superheated gas, and arrangement of an elliptical head, a refractory ball and a thermal insulation layer in the furnace, heat release through an exchange reaction and control of the gas inlet amount of the raw gas, the control degree of the temperature of a bed layer of the temperature-control self-heating conversion purification furnace and the temperature in the furnace is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal chemical industry conversion technical field relates to a temperature control self heating conversion purification furnace. BACKGROUND

[0002] With the continuous innovation of technology, the coal chemical industry in China shows a growth trend, and the coal gas conversion process is widely used in the coal chemical industry. As the key equipment of the coal gas conversion process, the existing furnace type needs to be set in the process of device driving. The raw material gas temperature is low, the heater needs to be set in the inlet of the purification furnace, and when the catalyst bed layer is entered, the bed layer temperature fluctuates greatly, and the bed layer temperature fluctuates greatly. It is easy to appear bed layer temperature or collapse temperature phenomenon, it is more difficult to control, increases the driving difficulty and gas connection time. At the same time, due to the complex composition of the crude coal gas, with the reaction, the gas temperature rises continuously, the possibility of equipment damage increases, and the higher temperature will inhibit the conversion reaction, resulting in unqualified conversion rate. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a kind of temperature control self heating conversion purification furnace, solve the problem of additional heater and difficult to control furnace temperature in the existing purification furnace technology.

[0004] The utility model adopts the technical scheme that the barrel body is opened at both ends, the inside is provided with baffle, the barrel body is connected with upper head and lower head respectively at both ends, the upper head and baffle form upper cavity, the lower head and baffle form lower cavity, the baffle is fixedly connected with first oval head to form first cavity and be located in the inside of upper cavity;First cavity bottom is provided with gas distributor;Upper head top end is sequentially communicated with connecting pipe and outer tube, connecting pipe is fixedly connected with outer tube, outer tube outer wall is provided with superheated coal gas inlet;Inner tube is sleeved in outer tube and connecting pipe inside;Inner tube one end is crude coal gas inlet, the other end extends into upper cavity and is communicated with first oval head;Lower head inside bottom surface is fixedly connected with second oval head, forms second cavity, and second cavity bottom is provided with coal gas outlet;Upper cavity is filled with catalyst.

[0005] The utility model has the characteristics that:

[0006] The baffle outside the upper cavity and the inner wall of the upper part of the barrel body are both paved with thermal insulation layer.

[0007] The thermal insulation layer is formed by paving castable refractory bricks.

[0008] A plurality of through holes are uniformly provided on the upper surfaces of the first oval head and the second oval head, and a wire mesh and refractory balls are sequentially paved on the outer surfaces of the first oval head and the second oval head from bottom to top.

[0009] The diameter of the through holes is 20mm, the distance between the holes is 33mm, and the diameter of the refractory balls is 50mm.

[0010] The bottom surface of the upper cavity is provided with a discharge port extending to the outside of the barrel body.

[0011] The upper cavity side wall is outwardly provided with a first catalyst discharging port; and the lower cavity side wall is outwardly provided with a second catalyst discharging port.

[0012] The upper head side wall is provided with a manhole.

[0013] The upper head side wall is provided with a tower top lifting column.

[0014] The utility model has the advantages of:

[0015] (1) the temperature control self-heating shift purification furnace of the utility model, through effective combination of detoxification agent and catalyst, combination of inlet crude coal gas and overheat coal gas, heat release through exchange reaction and control of crude coal gas inlet amount, the control degree of bed temperature and furnace temperature of the temperature control self-heating shift purification furnace is improved, and the crude coal gas shift efficiency is improved.

[0016] (2) the temperature control self-heating shift purification furnace of the utility model, internally arranged oval head, surface is sequentially provided with wire mesh and fireproof ball, has reduced the probability of fireproof ball leakage, block, the fireproof ball has the function of heat storage and heat release simultaneously, and it is favorable to keep the internal temperature of the temperature control self-heating shift purification furnace stable.

[0017] (3) the temperature control self-heating shift purification furnace of the utility model, the refractory brick of castable is laid in the furnace and forms the heat preservation layer, prevents the pressure rise caused by high temperature in the furnace and thus destroys the furnace body while heat insulation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the temperature control self-heating shift purification furnace of the utility model;

[0019] Figure 2 It is the structure schematic diagram of the surface of the oval head in the utility model;

[0020] Figure 3 It is the structure schematic diagram of the inner tube and outer tube in the utility model.

[0021] In the drawing: 1. crude coal gas inlet, 2. overheat coal gas inlet, 3. upper head, 4. heat insulation layer, 5. first catalyst discharging port, 6. gas distributor, 7. lower head, 8. second catalyst discharging port, 9. coal gas outlet, 10. first oval head, 11. cylinder, 12. discharge port, 13. second oval head, 14. tower top lifting column, 15. manhole, 16. wire mesh, 17. sleeve, 18. inner tube, 19. partition, 20. first cavity, 21. second cavity, 22. upper cavity, 23. lower cavity, 24. through hole, 25. fireproof ball, 26. connecting pipe DETAILED DESCRIPTION

[0022] The following will be specifically described in conjunction with specific embodiments.

[0023] This utility model relates to a temperature-controlled self-heating conversion purification furnace, such as... Figure 1 As shown, the device includes a cylindrical body 11 with openings at both ends and an internal partition 19. One end of the cylindrical body 11 is connected to an upper end cap 3, and the other end is connected to a lower end cap 7. The upper end cap 3 and the partition 19 form an upper cavity 22, and the lower end cap 7 and the partition 19 form a lower cavity 23. At the bottom of the upper cavity 22, i.e., on the partition 19, a first elliptical end cap 10 is welded to form a first cavity 20. A gas distributor 6 is located at the bottom of the first cavity 20. The top of the upper end cap 3 has a through hole that connects to a connecting pipe 26 and an outer pipe 17 in sequence. The outer pipe 17 is fixedly connected to the connecting pipe 26, and a superheated gas inlet 2 is located on the outer wall of the outer pipe 17. An inner pipe 18 is fitted inside the outer pipe 17 and the connecting pipe 26. One end of the inner pipe 18 is a crude gas inlet 1, and the other end passes through the upper cavity 22 and communicates with the first elliptical end cap 10. One end of the outer pipe 17 is connected to the connecting pipe 26, and the other end is not higher than the inner pipe 18 and the port is closed to prevent hot gas leakage. A superheated gas inlet 2 is opened on the outer wall of the outer pipe 17. A second elliptical end cap 13 is welded to the bottom surface of the inner end cap 7 to form a second cavity 21. A gas outlet 9 is opened at the bottom of the second cavity 21.

[0024] A discharge port 12 is provided on the bottom surface of the upper cavity 22, extending outside the cylinder 11 for easy loading and unloading of refractory balls. A first catalyst discharge port 5 and a second catalyst discharge port 8 are respectively provided outwardly on the side walls of the upper cavity 22 and lower cavity 23 for removing or replacing the catalyst. A manhole 15 is provided on the side wall of the upper head 3 to facilitate personnel access for maintenance and safety checks of the temperature-controlled self-heating conversion purification furnace. Additionally, a tower top lifting column 14 is provided on the side wall of the upper head 3 to assist in transporting the packing material inside the tower.

[0025] The bottom of the upper cavity 22 is filled with catalyst and detoxifying agent sequentially from bottom to top, submerging the first elliptical end cap 10, to detoxify and catalyze the superheated gas. The bottom of the lower cavity 23 is filled with detoxifying agent, submerging the second elliptical end cap 13, to perform secondary detoxification on the mixed gas. The inner wall of the upper cavity 22 is lined with an insulation layer 4 for heat insulation. The insulation layer 4 is composed of castable refractory bricks to prevent the internal temperature of the upper cavity 22 from rising and generating high pressure that could damage the cavity structure.

[0026] The catalyst used is a cobalt-molybdenum based catalyst, which makes it easier for carbon monoxide and water vapor molecules to collide and react, thereby increasing the reaction rate and generating heat.

[0027] like Figure 2As shown, the first elliptical head 10 and the second elliptical head 13 are uniformly provided with through holes 24 with a diameter of 20 mm, and the distance between the holes is 33 mm. The upper part is paved with fire-resistant balls 25 with a diameter of 50 mm. Two layers of wire mesh 16 are laid between the fire-resistant balls 25 and the elliptical head to prevent the fire-resistant balls from blocking the holes or leaking. The fire-resistant balls 25 form a pore structure after being stacked on the elliptical head, which can uniformly distribute the gas. The fire-resistant balls have a certain heat storage capacity, which can absorb and store heat to ensure the stability of the furnace temperature and the continuity of the detoxification and catalysis process.

[0028] As shown in Figure 3 The inner tube 18 is sleeved inside the outer tube 17 and the connecting tube 26. One end of the inner tube 18 is the crude gas inlet 1, and the other end is connected to the first elliptical head 10 for communication. One end of the connecting tube 26 is connected to the upper head 3, and the other end is fixedly connected to the outer tube 17. The other end of the outer tube 17 is not higher than the inner tube 18 and is closed at the port. The outer wall of the outer tube 17 is provided with a superheated coal gas inlet 2. The inner tube 18, the outer tube 17, and the connecting tube 26 are all steel pipes.

[0029] The temperature-controllable self-heating shift and purification furnace body is also provided with a plurality of temperature measuring points to monitor the bed temperature.

[0030] When the temperature-controllable self-heating shift and purification furnace is used to purify crude coal gas, first, the water gas (227℃, 6.8MPa) is separated from liquid water by a coal gas separator. A part of the water gas is used as crude synthesis gas and is transported to the first cavity 20 through the inner tube 17 and the connecting tube 26 as the crude gas inlet 1. Another part of the water gas is heated to 250℃ by a coal gas preheater to form crude coal gas. The crude coal gas is introduced into the upper cavity 22 through the superheated coal gas inlet 2 and the outer tube 17. The volume ratio of the crude synthesis gas to the crude coal gas is 8:2. The crude coal gas in the upper cavity 22 is first detoxified by the detoxification agent, and then undergoes a shift reaction and releases heat through the catalyst. The hot spot temperature is 386℃-400℃, so that self-heating is realized and no additional heat is needed. After the catalytic reaction, the crude coal gas passes through the fire-resistant balls 25 with a diameter of 50 mm, the two layers of wire mesh 16, and the uniformly provided through holes 24 with a diameter of 20 mm on the first elliptical head 10 in sequence, and then enters the first cavity 20 to mix with the crude synthesis gas. The heat preservation layer 4 formed by castable refractory bricks is laid in the upper cavity 22, and the fire-resistant balls 25 laid on the first elliptical head 10 both have heat preservation and heat storage effects. At the same time, the heat preservation layer 4 can prevent the temperature from rising too high to cause pressure rise and damage to the upper cavity 22.

[0031] The mixed crude coal gas is evenly introduced into the lower cavity 23 through the gas distributor 6, is detoxified by the detoxification agent, removes dust and poisons (arsenic, phosphorus, chlorine), and then sequentially passes through the 50mm-diameter refractory ball 25, the two layers of wire mesh 16, and the uniformly arranged 20mm-diameter through holes 24 on the second elliptical head 13 to enter the second cavity 21. The temperature inside the temperature-controlled autothermal shift purification furnace is controlled by adjusting the amount of the heated crude coal gas. After the temperature of the mixed crude coal gas in the second cavity 21 is adjusted to 255-273℃, the mixed crude coal gas is sent to the first shift furnace through the coal gas outlet 9 to complete the purification process of the crude coal gas.

[0032] Example 1

[0033] The temperature-controlled autothermal shift purification furnace comprises a cylinder 11, the two ends of the cylinder 11 are open, a partition plate 19 is arranged inside the cylinder 11, the two ends of the cylinder 11 are respectively connected with an upper head 3 and a lower head 7, the upper head 3 and the partition plate 19 form an upper cavity 22, the lower head 7 and the partition plate 19 form a lower cavity 23, the partition plate 19 is fixedly connected with a first elliptical head 10 to form a first cavity 20 and is located inside the upper cavity 22; a gas distributor 6 is arranged at the bottom of the first cavity 20; the upper head 3 is sequentially connected with a connecting pipe 26 and an outer pipe 17, the connecting pipe 26 and the outer pipe 17 are fixedly connected, a superheated coal gas inlet 2 is arranged on the outer wall of the outer pipe 17; an inner pipe 18 is sleeved inside the outer pipe 17 and the connecting pipe 26; one end of the inner pipe 18 is a crude coal gas inlet 1, and the other end extends into the upper cavity 22 and is connected with the first elliptical head 10; a second elliptical head 13 is fixedly connected to the inner bottom surface of the lower head 7 to form a second cavity 21, and a coal gas outlet 9 is arranged at the bottom of the second cavity 21; a catalyst is filled in the upper cavity 22.

[0034] Example 2

[0035] The temperature-controlled autothermal shift purification furnace comprises a cylinder 11, the two ends of the cylinder 11 are open, a partition plate 19 is arranged inside the cylinder 11, the two ends of the cylinder 11 are respectively connected with an upper head 3 and a lower head 7, the upper head 3 and the partition plate 19 form an upper cavity 22, the lower head 7 and the partition plate 19 form a lower cavity 23, the partition plate 19 is fixedly connected with a first elliptical head 10 to form a first cavity 20 and is located inside the upper cavity 22; a gas distributor 6 is arranged at the bottom of the first cavity 20; the upper head 3 is sequentially connected with a connecting pipe 26 and an outer pipe 17, the connecting pipe 26 and the outer pipe 17 are fixedly connected, a superheated coal gas inlet 2 is arranged on the outer wall of the outer pipe 17; an inner pipe 18 is sleeved inside the outer pipe 17 and the connecting pipe 26; one end of the inner pipe 18 is a crude coal gas inlet 1, and the other end extends into the upper cavity 22 and is connected with the first elliptical head 10; a second elliptical head 13 is fixedly connected to the inner bottom surface of the lower head 7 to form a second cavity 21, and a coal gas outlet 9 is arranged at the bottom of the second cavity 21; a catalyst is filled in the upper cavity 22.

[0036] The partition plate 19 outside the upper cavity 22 and the inner wall of the upper part of the cylinder 11 are both paved with a heat preservation layer 4.

[0037] Example 3

[0038] The temperature control self-heating shift purification furnace comprises a cylinder 11, the cylinder 11 is open at both ends, a partition plate 19 is arranged inside, the cylinder 11 is connected with an upper head 3 and a lower head 7 at both ends respectively, the upper head 3 and the partition plate 19 form an upper cavity 22, the lower head 7 and the partition plate 19 form a lower cavity 23, a first elliptical head 10 is fixedly connected to the partition plate 19 to form a first cavity 20 and is located inside the upper cavity 22; a gas distributor 6 is arranged at the bottom of the first cavity 20; a connecting pipe 26 and an outer pipe 17 are sequentially communicated with the top end of the upper head 3, the connecting pipe 26 is fixedly connected with the outer pipe 17, a superheated gas inlet 2 is arranged on the outer wall of the outer pipe 17; an inner pipe 18 is sleeved inside the outer pipe 17 and the connecting pipe 26; one end of the inner pipe 18 is a crude gas inlet 1, the other end extends into the upper cavity 22 and is communicated with the first elliptical head 10; a second elliptical head 13 is fixedly connected to the inner bottom surface of the lower head 7 to form a second cavity 21, a gas outlet 9 is arranged at the bottom of the second cavity 21; a catalyst is filled in the upper cavity 22.

[0039] The partition plate 19 outside the upper cavity 22 and the inner wall of the upper part of the cylinder 11 are both paved with a heat preservation layer 4.

[0040] The heat preservation layer 4 is paved by castable refractory bricks.

[0041] Example 4

[0042] The temperature control self-heating shift purification furnace comprises a cylinder 11, the cylinder 11 is open at both ends, a partition plate 19 is arranged inside, the cylinder 11 is connected with an upper head 3 and a lower head 7 at both ends respectively, the upper head 3 and the partition plate 19 form an upper cavity 22, the lower head 7 and the partition plate 19 form a lower cavity 23, a first elliptical head 10 is fixedly connected to the partition plate 19 to form a first cavity 20 and is located inside the upper cavity 22; a gas distributor 6 is arranged at the bottom of the first cavity 20; a connecting pipe 26 and an outer pipe 17 are sequentially communicated with the top end of the upper head 3, the connecting pipe 26 is fixedly connected with the outer pipe 17, a superheated gas inlet 2 is arranged on the outer wall of the outer pipe 17; an inner pipe 18 is sleeved inside the outer pipe 17 and the connecting pipe 26; one end of the inner pipe 18 is a crude gas inlet 1, the other end extends into the upper cavity 22 and is communicated with the first elliptical head 10; a second elliptical head 13 is fixedly connected to the inner bottom surface of the lower head 7 to form a second cavity 21, a gas outlet 9 is arranged at the bottom of the second cavity 21; a catalyst is filled in the upper cavity 22.

[0043] A plurality of through holes 24 are uniformly arranged on the upper surfaces of the first elliptical head 10 and the second elliptical head 13, and a wire mesh 16 and refractory balls 25 are sequentially paved on the outer surfaces of the first elliptical head 10 and the second elliptical head 13 from bottom to top.

[0044] Example 5

[0045] The temperature control self-heating conversion purification furnace comprises a cylinder 11, the cylinder 11 is open at both ends, a partition plate 19 is arranged inside, the cylinder 11 is connected with an upper head 3 and a lower head 7 at both ends respectively, the upper head 3 and the partition plate 19 form an upper cavity 22, the lower head 7 and the partition plate 19 form a lower cavity 23, a first elliptical head 10 is fixedly connected to the partition plate 19 to form a first cavity 20 and is located inside the upper cavity 22; a gas distributor 6 is arranged at the bottom of the first cavity 20; a connecting pipe 26 and an outer pipe 17 are sequentially communicated with the top end of the upper head 3, the connecting pipe 26 is fixedly connected with the outer pipe 17, a superheated gas inlet 2 is arranged on the outer wall of the outer pipe 17; an inner pipe 18 is sleeved inside the outer pipe 17 and the connecting pipe 26; one end of the inner pipe 18 is a crude gas inlet 1, the other end extends into the upper cavity 22 and is communicated with the first elliptical head 10; a second elliptical head 13 is fixedly connected to the bottom surface inside the lower head 7 to form a second cavity 21, a gas outlet 9 is arranged at the bottom of the second cavity 21; a catalyst is filled in the upper cavity 22.

[0046] A plurality of through holes 24 are uniformly arranged on the upper surfaces of the first elliptical head 10 and the second elliptical head 13, and a wire mesh 16 and a refractory ball 25 are sequentially laid from bottom to top on the outer surfaces of the first elliptical head 10 and the second elliptical head 13.

[0047] The diameter of the through hole 24 is 20 mm, the hole spacing is 33 mm, and the diameter of the refractory ball 25 is 50 mm.

[0048] Example 6

[0049] The temperature control self-heating conversion purification furnace comprises a cylinder 11, the cylinder 11 is open at both ends, a partition plate 19 is arranged inside, the cylinder 11 is connected with an upper head 3 and a lower head 7 at both ends respectively, the upper head 3 and the partition plate 19 form an upper cavity 22, the lower head 7 and the partition plate 19 form a lower cavity 23, a first elliptical head 10 is fixedly connected to the partition plate 19 to form a first cavity 20 and is located inside the upper cavity 22; a gas distributor 6 is arranged at the bottom of the first cavity 20; a connecting pipe 26 and an outer pipe 17 are sequentially communicated with the top end of the upper head 3, the connecting pipe 26 is fixedly connected with the outer pipe 17, a superheated gas inlet 2 is arranged on the outer wall of the outer pipe 17; an inner pipe 18 is sleeved inside the outer pipe 17 and the connecting pipe 26; one end of the inner pipe 18 is a crude gas inlet 1, the other end extends into the upper cavity 22 and is communicated with the first elliptical head 10; a second elliptical head 13 is fixedly connected to the bottom surface inside the lower head 7 to form a second cavity 21, a gas outlet 9 is arranged at the bottom of the second cavity 21; a catalyst is filled in the upper cavity 22.

[0050] A discharge port 12 extending to the outside of the cylinder 11 is arranged on the bottom surface of the upper cavity 22.

[0051] Example 7

[0052] The temperature control self-heating conversion purification furnace comprises a cylinder 11, the cylinder 11 is open at both ends, a partition plate 19 is arranged inside, the cylinder 11 is connected with an upper head 3 and a lower head 7 at both ends respectively, the upper head 3 and the partition plate 19 form an upper cavity 22, the lower head 7 and the partition plate 19 form a lower cavity 23, a first elliptical head 10 is fixedly connected to the partition plate 19 to form a first cavity 20 and is located inside the upper cavity 22; a gas distributor 6 is arranged at the bottom of the first cavity 20; a connecting pipe 26 and an outer pipe 17 are sequentially communicated with the top end of the upper head 3, the connecting pipe 26 is fixedly connected with the outer pipe 17, and a superheated gas inlet 2 is arranged on the outer wall of the outer pipe 17; an inner pipe 18 is arranged inside the outer pipe 17 and the connecting pipe 26; one end of the inner pipe 18 is a crude gas inlet 1, and the other end extends into the upper cavity 22 and is communicated with the first elliptical head 10; a second elliptical head 13 is fixedly connected to the bottom surface inside the lower head 7 to form a second cavity 21, and a gas outlet 9 is arranged at the bottom of the second cavity 21; and a catalyst is filled in the upper cavity 22.

[0053] A first catalyst discharging port 5 is arranged on the side wall of the upper cavity 22; and a second catalyst discharging port 8 is arranged on the side wall of the lower cavity 23.

[0054] Example 8

[0055] The temperature control self-heating conversion purification furnace comprises a cylinder 11, the cylinder 11 is open at both ends, a partition plate 19 is arranged inside, the cylinder 11 is connected with an upper head 3 and a lower head 7 at both ends respectively, the upper head 3 and the partition plate 19 form an upper cavity 22, the lower head 7 and the partition plate 19 form a lower cavity 23, a first elliptical head 10 is fixedly connected to the partition plate 19 to form a first cavity 20 and is located inside the upper cavity 22; a gas distributor 6 is arranged at the bottom of the first cavity 20; a connecting pipe 26 and an outer pipe 17 are sequentially communicated with the top end of the upper head 3, the connecting pipe 26 is fixedly connected with the outer pipe 17, and a superheated gas inlet 2 is arranged on the outer wall of the outer pipe 17; an inner pipe 18 is arranged inside the outer pipe 17 and the connecting pipe 26; one end of the inner pipe 18 is a crude gas inlet 1, and the other end extends into the upper cavity 22 and is communicated with the first elliptical head 10; a second elliptical head 13 is fixedly connected to the bottom surface inside the lower head 7 to form a second cavity 21, and a gas outlet 9 is arranged at the bottom of the second cavity 21; and a catalyst is filled in the upper cavity 22.

[0056] A manhole 15 is arranged on the side wall of the upper head 3.

[0057] Example 9

[0058] The temperature control self-heating conversion purification furnace comprises a cylinder 11, the cylinder 11 is open at both ends, an internal partition 19 is arranged inside, the upper end of the cylinder 11 is connected with an upper end cover 3, the lower end of the cylinder 11 is connected with a lower end cover 7, the upper end cover 3 and the partition 19 form an upper cavity 22, the lower end cover 7 and the partition 19 form a lower cavity 23, the partition 19 is fixedly connected with a first oval end cover 10 to form a first cavity 20 and is located inside the upper cavity 22; a gas distributor 6 is arranged at the bottom of the first cavity 20; the upper end of the upper end cover 3 is sequentially connected with a connecting pipe 26 and an outer pipe 17, the connecting pipe 26 is fixedly connected with the outer pipe 17, a superheated gas inlet 2 is arranged on the outer wall of the outer pipe 17; an inner pipe 18 is arranged inside the outer pipe 17 and the connecting pipe 26; one end of the inner pipe 18 is a crude gas inlet 1, the other end of the inner pipe 18 extends into the upper cavity 22 and is connected with the first oval end cover 10; the lower end cover 7 is fixedly connected with a second oval end cover 13 on the bottom surface inside the lower end cover 7 to form a second cavity 21, a gas outlet 9 is arranged at the bottom of the second cavity 21; the upper cavity 22 is filled with a catalyst.

[0059] A tower top hanging column 14 is arranged on the side wall of the upper end cover 3.

Claims

1. A temperature-controlled autothermal reforming and purification furnace, characterized in that, The application relates to a catalytic cracking tower, which comprises a cylinder (11), the both ends of the cylinder (11) being open, an inner partition (19) being arranged inside the cylinder (11), an upper head (3) and a lower head (7) being connected to the both ends of the cylinder (11) respectively, the upper head (3) and the partition (19) forming an upper cavity (22), the lower head (7) and the partition (19) forming a lower cavity (23), a first elliptical head (10) being fixedly connected to the partition (19) to form a first cavity (20) and being located inside the upper cavity (22); a gas distributor (6) is arranged at the bottom of the first cavity (20); a connecting pipe (26) and an outer pipe (17) are sequentially and communicatively connected to the top of the upper head (3) in sequence, the connecting pipe (26) is fixedly connected to the outer pipe (17), and a superheated gas inlet (2) is arranged on the outer wall of the outer pipe (17); an inner pipe (18) is arranged in the outer pipe (17) and the connecting pipe (26); one end of the inner pipe (18) is a crude gas inlet (1), and the other end extends into the upper cavity (22) and is connected to the first elliptical head (10); a second elliptical head (13) is fixedly connected to the inner bottom of the lower head (7) to form a second cavity (21), and a gas outlet (9) is arranged at the bottom of the second cavity (21); and a catalyst is filled in the upper cavity (22).

2. The temperature controlled autothermal reformer according to claim 1, wherein The partition (19) outside the upper cavity (22) and the inner wall of the upper part of the cylinder (11) are both paved with a heat insulation layer (4).

3. The temperature controlled autothermal reformer according to claim 2, wherein The heat insulation layer (4) is paved by castable refractory bricks.

4. The temperature controlled autothermal reformer according to claim 1, wherein A plurality of through holes (24) are uniformly arranged on the upper surfaces of the first elliptical head (10) and the second elliptical head (13), and a wire mesh (16) and refractory balls (25) are sequentially paved on the outer surfaces of the first elliptical head (10) and the second elliptical head (13) from bottom to top.

5. The temperature controlled autothermal reformer according to claim 4, wherein The diameter of the through holes (24) is 20mm, and the distance between the through holes (24) is 33mm; the diameter of the refractory balls (25) is 50mm.

6. The temperature controlled autothermal reformer according to claim 1, wherein A discharge port (12) extending to the outside of the cylinder (11) is arranged on the bottom of the upper cavity (22).

7. The temperature controlled autothermal reformer according to claim 1, wherein A first catalyst discharge port (5) is arranged on the side wall of the upper cavity (22); and a second catalyst discharge port (8) is arranged on the side wall of the lower cavity (23).

8. The temperature controlled autothermal reformer according to claim 1, wherein A manhole (15) is arranged on the side wall of the upper head (3).

9. The temperature controlled autothermal reformer according to claim 1, wherein A tower top lifting column (14) is arranged on the side wall of the upper head (3).

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