Carbon calcined coke multi-channel shell type hopper heat exchange device

Abstract

The utility model discloses a multi-channel shell type hopper heat exchange device for carbon calcined coke. The multi-channel shell type hopper heat exchange device is composed of a device body, a first flange, a second flange, a water supply pipe assembly, a steam collecting pipe assembly, an outer heat preservation layer and a plurality of reinforcing ribs. The device body is of a vertical flat hollow structure defined by a plurality of shell type heat exchangers. A first flange is arranged at the upper end of the device body; a second flange is arranged at the lower end; a water supply pipe assembly is arranged at the bottom of the shell, and a steam collecting pipe assembly is arranged at the top of the shell; more than three groups of reinforcing ribs are arranged on the shell; according to the utility model, the carbon calcining furnace calcined coke is cooled to meet the production process requirements, the problem of high-quality utilization of waste heat is solved, the waste heat of the calcined coke is utilized to produce steam, and greater economic benefits are obtained; and thirdly, the operation safety of the equipment can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat utilization, and more specifically, to a carbon calcined coke multi-channel shell hopper heat exchange device. Background Art

[0002] At present, in the electrolytic aluminum industry, carbon products are needed as anodes for aluminum smelting. The carbon calcining furnace uses petroleum coke as raw material for calcining to obtain almost pure carbon materials, and then through processes such as crushing, kneading, molding and roasting, obtains "prebaked anodes" for electrolytic aluminum. The calcining furnace calcines petroleum coke at a high temperature of 1200-1300℃, and the temperature of its finished product - calcined coke is also above 1000℃. At present, a sandwich water cooling jacket is used to cool the petroleum coke, and the cooled petroleum coke is stored through the subsequent collection and transportation system.

[0003] The sandwich water-cooling jacket commonly used at present, commonly known as "water jacket" in the industry, is a heat exchanger made into a sandwich structure. The calcined coke passes through the space surrounded by the inner wall of the sandwich. A water jacket is formed between the inner wall and the outer wall of the sandwich, and working water flows through it. The working water in the water jacket is recycled. It conducts heat exchange with the high-temperature calcined coke through the inner wall of the jacket. The working water changes from cold water to hot water, achieving the purpose of cooling the calcined coke. The heat of the working water is dissipated into the atmosphere through the cooling tower, and the hot water is cooled into cold water and then recycled. Since the temperature of the calcined coke is relatively high and the specific heat of temperature rise of water is much smaller than the latent heat of vaporization, a large flow of circulating water is required to cool the calcined coke.

[0004] As mentioned above, in the current process, even after the circulating cooling water is turned into hot water, the temperature is still very low, generally below 45°C, and it cannot be used efficiently. Since the temperature of calcined coke is relatively high, the industry hopes to use the heat of calcined coke to produce steam, which has many uses, such as power generation, winter heating, summer air conditioning and refrigeration, or steam takeaway.

[0005] If the currently commonly used water jacket is allowed to directly produce steam, the water flow through the water jacket will be greatly reduced because the latent heat of vaporization of steam is much greater than the specific heat of temperature rise of water. Due to the structural characteristics of the water jacket itself, the flow and directionality of the water and steam flows in the interlayer will deteriorate, causing uneven heat exchange. In dangerous cases, it may even generate local high temperatures and cause damage to the equipment. Utility Model Content

[0006] In view of the above situation, the utility model provides a carbon calcined coke multi-channel shell hopper heat exchange device, which realizes the purpose of converting the heat of calcined coke into steam through a plurality of shell heat exchangers. The utility model firstly cools the calcined coke in the carbon calcining furnace to meet the production process requirements, and secondly solves the problem of high-quality utilization of waste heat, and uses the waste heat of calcined coke to produce steam to obtain greater economic benefits. Thirdly, it can improve the safety of equipment operation.

[0007] Specifically, the utility model is implemented through the following technical solutions:

[0008] A multi-channel shell hopper heat exchange device for calcined carbon coke, the heat exchange device consists of a device body, a first flange, a second flange, a water supply pipe assembly, a steam collecting pipe assembly, an outer insulation layer, and a plurality of reinforcing ribs. The device body is a vertical flat hollow structure surrounded by a plurality of shell-type heat exchangers; a first flange is provided at the upper end of the device body and is welded to the first flange; a second flange is provided at the lower end and is welded to the second flange; a water supply pipe assembly is provided at the bottom of the device body, and a steam collecting pipe assembly is provided at the top; and more than 3 groups of reinforcing ribs are provided on the outer surface of the device body.

[0009] Furthermore, a heat-insulating layer is provided on the outer surface of the device body.

[0010] Furthermore, the water inlet assembly is composed of a water inlet pipe, an annular connecting pipe, and a connecting pipe connected to each shell-type heat exchanger, and the steam collecting pipe assembly is composed of a steam outlet pipe, an annular connecting pipe, and a connecting pipe connected to each shell-type heat exchanger.

[0011] Furthermore, the reinforcing ribs are respectively arranged at the top, middle and bottom of the shell; the inner diameter of the reinforcing ribs is equal to the outer edge of the shell.

[0012] Beneficial Effects

[0013] 1. The utility model adopts a multi-channel shell heat exchanger, so that the previous single shell becomes 12 shell heat exchangers. Each shell heat exchanger has separate water inlet and steam outlet, so that water and steam have more flow and directionality, ensuring the heat exchange effect.

[0014] 2. If the heat of calcined coke is used to produce steam, the pressure must be increased. The utility model adopts a multi-channel shell heat exchanger, which has better pressure-bearing capacity than the original single shell.

[0015] 3. The water supply pipe assembly adopts a ring structure, which is conducive to ensuring uniform water inlet pressure. The steam outlet pipe assembly also adopts a ring structure, which is conducive to the collection and discharge of steam.

[0016] 4. The multi-channel shell heat exchanger adopts a flat mouth structure. Since the heat of the calcined coke is transferred through heat conduction with the inner wall of the shell heat exchanger, the flat mouth structure is more conducive to heat conduction and improves heat exchange efficiency than the square structure and circular structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model carbon calcined coke multi-channel shell hopper heat exchanger.

[0018] Figure 2 This is the cross-sectional view of the structure 1-1 of the multi-channel shell hopper heat exchanger for carbon calcined coke of the utility model.

[0019] Figure 3 This is a cross-sectional view of the structure 2-2 of the multi-channel shell hopper heat exchanger for calcined carbon coke of the utility model.

[0020] Reference numerals:

[0021] 101-first flange; 102-second flange;

[0022] 200-device body; 201~204-1#~4# shell heat exchangers; 205~206-5#~6# shell heat exchangers;

[0023] 207~210-7#~10# shell heat exchanger; 211~212-11#~12# shell heat exchanger;

[0024] 301-steam pipe assembly; 302-water pipe assembly; 401-external insulation layer; 501-1# reinforcing rib; 502-2# reinforcing rib; 503-3# reinforcing rib DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-3 The utility model is further elaborated.

[0026] like Figure 1 The utility model provides a carbon calcined coke multi-channel shell hopper heat exchange device, which is a vertical flat hollow structure heat exchange device. For a surface contact heat exchange device, the flat structure is conducive to material heat exchange and improves heat exchange efficiency.

[0027] The carbon calcined coke multi-channel shell hopper heat exchange device is composed of a device body 200, a first flange 101, a second flange 102, an outer insulation layer 401, a water supply pipe assembly 302, a steam collecting pipe assembly 301, and 1# to 3# reinforcing ribs (501, 502, 503). The device body 200 includes 1# to 12# shell heat exchangers (201 to 212), a total of 12 units, 8 of which are flat shell heat exchangers, and 4 are angled shell heat exchangers. The 12 heat exchangers form a flat hollow multi-channel shell hopper heat exchanger. A water inlet is set at the bottom of each shell heat exchanger, and a steam outlet is set at the top.

[0028] The 1# to 12# shell heat exchangers are composed of 8 groups of flat shell heat exchangers (201, 202, 203, 204, 207, 208, 209, 210) and 4 groups of curved shell heat exchangers (205, 206, 211, 212), forming a flat heat exchanger structure, such as Figure 2-3 As shown. Each group of shell heat exchangers (201-212) is provided with a water inlet and a steam exhaust port. External water supply is realized to each shell heat exchanger through the water supply pipe assembly 302. The working medium water flows from bottom to top in the heat exchanger. The calcined coke is in the middle of the shell heat exchanger and flows slowly from top to bottom by gravity. The working medium water conducts heat exchange with the calcined coke through the inner wall of the shell heat exchanger, and vaporizes while exchanging heat. The steam gathers in the upper space of the shell heat exchanger and is collected and discharged through the annular steam collecting pipe assembly 301.

[0029] The first flange and the second flange are used to connect to the discharge outlet of the calcining furnace and the calcined coke collection equipment; and are welded to the above-mentioned 12 heat exchangers.

[0030] The water supply pipe assembly 302 is composed of a water inlet pipe, an annular connecting pipe, and connecting pipes connected to 12 shell-type heat exchangers. The annular structure is conducive to ensuring the balance of water supply pressure. The steam collecting pipe assembly 301 is composed of a steam outlet pipe, an annular connecting pipe, and connecting pipes connected to 12 shell-type heat exchangers. The annular structure is conducive to ensuring the balance of steam outlet pressure.

[0031] The first flange 101 and the second flange 102 are used to fix the upper and lower ends of the 12 shell-type heat exchangers (201-212), and to connect with the discharge port of the calcining furnace and the feed port of the subsequent material collection system. The three groups of reinforcing ribs (501, 502, 503) are used to further fix and reinforce the 12 shell-type heat exchangers. The reinforcing ribs (501, 502, 503) are respectively arranged at the top, middle and bottom of the multi-channel shell-type hopper heat exchanger, and are three groups of 20mm thick and 100mm high steel plates. They are fixed and reinforced to the outside of the 12 heat exchangers. The inner diameter of each group of reinforcing ribs is equal to the outer edge of the above-mentioned 12 groups of shell-type heat exchangers.

[0032] The above is only a preferred embodiment of the present invention, but the present invention is not limited to the above specific embodiments. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept, which all belong to the protection scope of the present invention.

Claims

1. A carbon calcined coke multi-channel shell hopper heat exchange device, consisting of a device body, a first flange, a second flange, a water supply pipe assembly, a steam collecting pipe assembly, an outer insulation layer, and a plurality of reinforcing ribs; characterized in that: The device body is a vertical flat hollow structure surrounded by a plurality of shell-type heat exchangers; a first flange is arranged at the upper end of the device body; and a second flange is arranged at the lower end; A water supply pipe assembly is arranged at the bottom of the device body, and a steam collecting pipe assembly is arranged at the top; more than three groups of reinforcing ribs are arranged on the device body.

2. The carbon calcined coke multi-channel shell hopper heat exchange device according to claim 1, characterized in that: A heat-insulating layer is arranged outside the device body.

3. The carbon calcined coke multi-channel shell hopper heat exchange device according to claim 1, characterized in that: The water supply pipe assembly is composed of a water inlet pipe, an annular connecting pipe, and a connecting pipe connected to each shell-type heat exchanger. The steam collecting pipe assembly is composed of a steam outlet pipe, an annular connecting pipe, and a connecting pipe connected to each shell-type heat exchanger.

4. The carbon calcined coke multi-channel shell hopper heat exchange device according to claim 1, characterized in that: The reinforcing ribs are respectively arranged at the top, middle and bottom of the shell; the inner diameter of the reinforcing ribs is equal to the outer edge of the device body.

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