Complete cooling copper water jacket for coal gasification hearth

Abstract

The utility model discloses a complete cooling copper water jacket for a coal gasification hearth, which comprises an upper hearth water jacket, a lower hearth water jacket and a slag discharge port water jacket which are sequentially arranged on the inner wall of the hearth from top to bottom in the vertical direction, and the hearth water jacket comprises a conical wall body and a lower hearth connecting flange. The lower hearth water jacket comprises a horn-shaped wall body, an upper hearth connecting flange and a slag discharge port connecting flange, the lower hearth connecting flange and the upper hearth connecting flange are fixed through bolts, and the slag discharge port water jacket comprises a funnel-shaped wall body and a sealing flange. A cooling pipe circling along the wall body is arranged in each of the conical wall body, the horn-shaped wall body and the funnel-shaped wall body. The complete cooling copper water jacket for the coal gasification furnace solves the technical problems of poor high-temperature corrosion resistance, poor cooling effect, inconvenience in replacement, assembly and disassembly and short service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal chemical industry copper jacket technical field, concretely is a kind of coal gasification furnace hearth complete cooling copper jacket. BACKGROUND

[0002] Under the background of modern coal chemical industry vigorous development, coal gasification technology presents huge market demand in our country.There are many coal gasification modes, but a kind of gasification mode is only suitable for certain specific coal, and currently there is no mode to adapt to various coals.Most of Inner Mongolia and Xinjiang are lignite, and lignite is a kind of poor-quality coal with high ash content and moisture, which cannot be used for power generation or coking, but can be used for clean conversion to produce gas or chemical fertilizer.Coal gasification technology generally uses water vapor to mix a certain amount of oxygen as gasification agent, and produces high-concentration carbon monoxide or methanol, methane, urea and other products.Coal gasification furnace as core equipment, its running stability and long life are very important.The traditional refractory brick structure hearth exposes many problems in long-term operation, the furnace wall is super-thick, the hearth utilization rate is low, and the local temperature in the furnace is too high, which accelerates the burning loss of the hearth refractory material, and further affects the overall life of the equipment, increases the cost of frequent maintenance and maintenance, and reduces the production continuity and efficiency.At the same time, with the increasingly strict environmental protection requirements and the deepening of energy efficient utilization concept, there is an urgent need for a new cooling device that can be more efficient, prolong the life of the hearth and reduce resource waste and environmental pollution caused by equipment maintenance.Therefore, it is of great significance for coal gasification enterprises to develop a set of long-life complete cooling copper jacket for coal gasification furnace hearth that can realize long-period full-load stable operation. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a kind of coal gasification furnace hearth complete cooling copper jacket, solve poor high-temperature corrosion resistance, poor cooling effect, inconvenient replacement and loading and unloading, short service life technical problem.

[0004] To achieve the above object, the utility model provides the following technical scheme: including upper hearth water jacket, lower hearth water jacket and slag outlet water jacket, the upper hearth water jacket, lower hearth water jacket and slag outlet water jacket are sequentially arranged on the hearth inner wall in vertical direction from top to bottom, the hearth water jacket includes conical wall body and lower hearth connecting flange, the lower hearth water jacket includes horn-shaped wall body, upper hearth connecting flange and slag outlet connecting flange, the lower hearth connecting flange and upper hearth connecting flange are fixed by bolt, the slag outlet water jacket includes funnel-shaped wall body and sealing flange, the conical wall body, horn-shaped wall body and funnel-shaped wall body are all equipped with a cooling pipe that spirals along the wall body, the cooling pipe is respectively connected with water inlet pipe head and water outlet pipe head at both ends, and the sealing flange is sealingly connected with the end of hearth shell.

[0005] Further, furnace body support connecting flange is arranged on the upper hearth water jacket.

[0006] Furthermore, reinforcing ribs 5 are provided on the outer walls of the conical wall and the trumpet-shaped wall.

[0007] Furthermore, the cooling pipe is made of copper or nickel alloy.

[0008] Furthermore, a 3-5mm high-nickel alloy is welded over the lower end face of the sealing flange.

[0009] Furthermore, a 3-5mm high-nickel alloy is welded to the connection between the inlet and outlet pipe heads of the slag discharge outlet water jacket and the funnel-shaped wall.

[0010] Compared with the prior art, the advantages of this utility model are: good high temperature corrosion resistance, good cooling effect, flange connection between workpieces, convenient replacement and disassembly, long service life, and improved reliability, economy and environmental protection of coal gasification furnace. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the present invention;

[0012] Figure 2 This is a three-dimensional view of the upper furnace water jacket of this utility model;

[0013] Figure 3 This is a top view of the upper furnace water jacket of this utility model;

[0014] Figure 4 This utility model Figure 3 DD section view;

[0015] Figure 5 This is a three-dimensional view of the lower furnace water jacket of this utility model;

[0016] Figure 6 This is a top view of the lower furnace water jacket of this utility model;

[0017] Figure 7 This is a top view of the slag discharge outlet sleeve of this utility model;

[0018] Figure 8 This utility model Figure 7 Sectional view along axis AA;

[0019] Figure 9 This utility model Figure 7 BB-direction sectional view;

[0020] Figure 10 This is a schematic diagram of the cooling pipe of this utility model. Detailed Implementation

[0021] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0022] Please refer to Figures 1-10 The present application provides a technical scheme: including upper hearth water jacket 1, lower hearth water jacket 2 and discharge port water jacket 3, the upper hearth water jacket 1, lower hearth water jacket 2 and discharge port water jacket 3 are sequentially arranged on the inner wall of the hearth from top to bottom in the vertical direction, the hearth water jacket 1 includes conical wall body 11 and lower hearth connecting flange 18, the lower hearth water jacket 2 includes horn-shaped wall body 21, upper hearth connecting flange 25 and discharge port connecting flange 24, the lower hearth connecting flange 18 and upper hearth connecting flange 25 are fixed by bolts, the discharge port water jacket 3 includes funnel-shaped wall body 31 and sealing flange 37, the conical wall body 11, horn-shaped wall body 21 and funnel-shaped wall body 31 are all provided with a cooling pipe 4 spirally arranged in the wall body, the cooling pipe 4 is respectively connected with water inlet pipe head 41 and water outlet pipe head 42 at both ends, the sealing flange 37 is sealingly connected with the end of the hearth shell, the cooling coil is supported and positioned by pipe clamp, is pre-buried in the graphite cast and is integrally cast with the wall body and reinforcing rib, the water inlet pipe head 41 and water outlet pipe head 42 are respectively copper steel welded at both ends of the cooling pipe, to form an upper hearth copper water jacket circulating cooling water path, and the welding joint is further subjected to heat-resistant stainless steel overlaying, to protect the joint from being washed and corroded by flue gas.

[0023] The upper hearth water jacket 1 is provided with a furnace shaft support connecting flange 17, to facilitate fixing the hearth shell.

[0024] The outer wall of the conical wall body 11 and horn-shaped wall body 21 is provided with reinforcing rib 5, to enhance the strength of the wall body.

[0025] The cooling pipe 4 is a copper pipe or a nickel alloy pipe, to enhance the strength and heat conductivity of the cooling pipe.

[0026] The sealing flange 37 is provided with 3-5mm high nickel alloy 38 at the lower end surface, to prevent the copper wall body from being washed.

[0027] The water inlet pipe head 41 and water outlet pipe head 42 of the discharge port water jacket 3 are provided with 3-5mm high nickel alloy 38 at the connection with the funnel-shaped wall body 31, the copper and high nickel chromium alloy are completely fused, to solve the problem of easy cracking due to different expansion coefficients of different materials, improve the washing resistance of the hearth to high-temperature coal cinder, and effectively solve the problem of short service life of the hearth.

[0028] Working principle: the upper furnace water jacket, the lower furnace water jacket and the slag outlet water jacket are arranged on the inner wall of the furnace in the vertical direction from top to bottom in turn, are fixed through flanges, are convenient to disassemble and assemble, when being used, only the water inlet pipe head and the water outlet pipe head are connected, water enters the cooling pipe, heat conduction and cooling are carried out, the furnace body is cooled, and the service life of the furnace body is prolonged.

[0029] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A complete cooling copper water jacket for a coal gasification furnace, characterized in that: The furnace includes an upper furnace water jacket (1), a lower furnace water jacket (2), and a slag discharge port water jacket (3). These three water jackets are arranged vertically from top to bottom on the inner wall of the furnace. The furnace water jacket (1) includes a conical wall (11) and a lower furnace connecting flange (18). The lower furnace water jacket (2) includes a trumpet-shaped wall (21), an upper furnace connecting flange (25), and a slag discharge port connecting flange (24). The flange (18) and the upper furnace connecting flange (25) are fixed by bolts. The slag discharge port water jacket (3) includes a funnel-shaped wall (31) and a sealing flange (37). The conical wall (11), the horn-shaped wall (21) and the funnel-shaped wall (31) are each provided with a cooling pipe (4) that spirals along the wall. The two ends of the cooling pipe (4) are respectively connected to a water inlet pipe head (41) and a water outlet pipe head (42). The sealing flange (37) is sealed to the end of the furnace shell.

2. The copper water jacket according to claim 1, characterized in that: A furnace body support connecting flange (17) is provided on the upper furnace water jacket (1).

3. The copper water jacket according to claim 1, characterized in that: The outer walls of the conical wall (11) and the trumpet-shaped wall (21) are provided with reinforcing ribs (5).

4. The copper water jacket according to claim 1, characterized in that: The cooling pipe (4) is a copper pipe or a nickel alloy pipe.

5. The copper water jacket according to claim 1, characterized in that: The lower end face of the sealing flange (37) is overlaid with 3-5mm of high-nickel alloy (38).

6. The copper water jacket according to claim 1, characterized in that: The inlet pipe head (41), outlet pipe head (42) of the slag discharge outlet water jacket (3) are welded with a 3-5mm high nickel alloy (38) at the connection between the water inlet pipe head (41), the water outlet pipe head (42) and the funnel-shaped wall (31).

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