Non-ferrous metallurgical furnace flue gas carbon dioxide variable-temperature negative-pressure adsorption tower

Abstract

The utility model provides a non-ferrous metallurgical furnace flue gas carbon dioxide variable temperature negative pressure adsorption tower which comprises a shell, and an in-situ pressure gauge, a positive pressure sensor and a negative pressure sensor are respectively arranged at the top of the shell. According to the non-ferrous metallurgical furnace flue gas carbon dioxide variable-temperature negative-pressure adsorption tower provided by the utility model, by adopting the design that the internal heat exchange ring pipe and the second seamless steel pipe are connected with related systems, the temperature in the adsorption tower can be quickly increased, the adsorbed carbon dioxide is promoted to be quickly desorbed, the treatment efficiency of the carbon dioxide is improved, and the energy consumption is reduced. The heat conduction oil can be completely discharged after desorption is completed, reasonable utilization of resources is achieved, energy consumption is reduced, and compared with a traditional physical and chemical absorption method, the problem of high energy consumption is avoided, and the equipment operation cost and the operation cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a temperature-variable negative pressure adsorption tower for carbon dioxide in flue gas from a non-ferrous metallurgical furnace. Background Art

[0002] The intensification of global climate change has made reducing carbon dioxide emissions a top priority. Governments worldwide have established stringent emission reduction targets and regulations, pushing various industries to take proactive measures. As a major energy consumer and carbon dioxide emitter, the nonferrous metallurgical industry faces immense pressure to reduce emissions. Developing efficient carbon dioxide capture technology is not only necessary to meet environmental requirements but also a key path to enhancing corporate competitiveness and sustainable development.

[0003] In the treatment of flue gas from non-ferrous metallurgical furnaces, traditional carbon dioxide treatment technologies have many limitations. For example, although some physical absorption and chemical absorption methods can capture carbon dioxide, they often have problems such as high energy consumption, complex equipment, and high operating costs. At the same time, these methods may have adverse effects on other components in the flue gas or require large amounts of chemical reagents, bringing the risk of secondary pollution. In addition, traditional technologies may find it difficult to achieve efficient carbon dioxide separation and capture when treating large-scale flue gas.

[0004] Therefore, it is necessary to provide a non-ferrous metallurgical furnace flue gas carbon dioxide temperature-variable negative pressure adsorption tower to solve the above technical problems. Utility Model Content

[0005] The utility model provides a variable temperature negative pressure adsorption tower for carbon dioxide in the flue gas of a non-ferrous metallurgical furnace, which solves the problems of high energy consumption, complex equipment, high cost, impact on other components of the flue gas, risk of secondary pollution, and difficulty in efficiently separating and capturing carbon dioxide when treating large-scale flue gas.

[0006] In order to solve the above technical problems, the utility model provides a non-ferrous metallurgical furnace flue gas carbon dioxide temperature-variable negative pressure adsorption tower, comprising:

[0007] A housing, the top of which is provided with an on-site pressure gauge, a positive pressure sensor, and a negative pressure sensor;

[0008] An air intake tee, the air intake tee being arranged at the bottom of the shell;

[0009] An air inlet diffuser is provided on the inner side of the shell, and an input end of the air inlet diffuser is connected to an output end of the air inlet tee;

[0010] An internal heat exchange loop pipe, the internal heat exchange loop pipe is arranged on the inner side surface of the shell, and the input end and output end of the internal heat exchange loop pipe are both connected to the heat transfer oil inlet and outlet pipes;

[0011] An air outlet diffuser, the air outlet diffuser being arranged on the inner side surface of the shell;

[0012] an adsorbent loading hole, the adsorbent loading hole being arranged at the top of the shell;

[0013] an adsorbent discharge hole, the adsorbent discharge hole being arranged on a side surface of the shell;

[0014] A porous aminated carbon-based adsorbent is arranged on the inner side of the shell.

[0015] Preferably, the shell includes a lower tank body, an upper head, a connecting flange pair, a heat-conducting oil heating jacket, an insulation layer and an aluminum protective plate, a support leg, an adsorbent loading hole socket, an adsorbent unloading hole socket, an internal heat exchange loop oil inlet socket, an internal heat exchange loop oil outlet socket, a jacket oil inlet, a jacket oil outlet, a carbon dioxide outlet, a negative pressure sensor interface and a positive pressure sensor interface. The upper head is arranged on the top of the lower tank body, and the connecting flange pair is respectively arranged at the two ends of the bottom of the upper head and the two ends of the top of the lower tank body. The heat-conducting oil heating jacket is arranged on the outer side of the lower tank body, the insulation layer and the aluminum protective plate are arranged on the outer side of the lower tank body, and the support legs are respectively fixedly installed on the bottom of the lower tank body. The adsorbent loading hole socket is fixedly installed on the top of the upper head, the adsorbent unloading hole socket is fixedly installed on the side of the lower tank body, the internal heat exchange loop oil inlet socket is fixedly installed on the other side of the lower tank body, the internal heat exchange loop oil outlet socket is fixedly installed on one side of the lower tank body, the jacket oil outlet is fixedly installed on the top of one side of the lower tank body, the carbon dioxide outlet is fixedly installed on the top of the upper head, the negative pressure sensor interface is fixedly installed on the top of the upper head, the positive pressure sensor interface is fixedly installed on the top of the upper head, and the interior of the lower tank body, the upper head and the connecting flange pair are all provided with acid-resistant rubber lining.

[0016] Preferably, the adsorbent loading hole connecting pipe seat is fixedly installed on the bottom of the adsorbent loading hole, the adsorbent unloading hole connecting pipe seat is fixedly installed on one side of the adsorbent unloading hole, the negative pressure sensor interface is fixedly installed on the bottom of the negative pressure sensor, and the positive pressure sensor interface is fixedly installed on the bottom of the positive pressure sensor.

[0017] Preferably, the air inlet tee includes a flange seamless steel pipe, a first seamless steel pipe and a flange, the first seamless steel pipe is fixedly installed at the bottom of the flange seamless steel pipe, and the flange is fixedly installed at both ends of the first seamless steel pipe respectively, the air inlet diffuser includes a second seamless steel pipe, a diffuser seamless steel pipe, an air inlet flange, a first flange pair, a stainless steel graphite wound gasket, a first stainless steel filter screen and a second stainless steel filter screen, the diffuser seamless steel pipe is fixedly installed at the bottom of the second seamless steel pipe, the air inlet flange is fixedly installed at the bottom of the diffuser seamless steel pipe, the air inlet flange is fixedly installed at the top of the first seamless steel pipe, the first flange pair is respectively arranged at both ends of the second seamless steel pipe, the first stainless steel filter screen and the second stainless steel filter screen are respectively arranged on the sides of the two first flange pairs, and the stainless steel graphite wound gasket is arranged on the outer sides of the first stainless steel filter screen and the second stainless steel filter screen.

[0018] Preferably, the internal heat exchange ring pipe includes an inlet flange pipe, a lower outer ring pipe, a lower inner ring pipe, a ring pipe connecting pipe, an outer ring heat exchange pipe, an inner ring heat exchange pipe, an upper inner ring pipe, an upper outer ring pipe and an outlet flange pipe, the lower outer ring pipe is fixedly installed on the output end of the inlet flange pipe, the lower inner ring pipe is arranged on the inner side surface of the lower outer ring pipe, the outer ring heat exchange pipe is fixedly installed on the top of the lower outer ring pipe, the upper outer ring pipe is fixedly installed on the top of the outer ring heat exchange pipe, the inner ring heat exchange pipe is fixedly installed on the top of the lower inner ring pipe, the upper inner ring pipe is fixedly installed on the top of the inner ring heat exchange pipe, the input end of the outlet flange pipe is fixedly installed on the output end of the upper outer ring pipe, and the ring pipe connecting pipe is respectively fixedly installed on the lower outer ring pipe and the lower inner ring pipe and in the middle of the upper outer ring pipe and the upper inner ring pipe.

[0019] Preferably, the gas outlet comprises a seamless steel pipe, a second flange pair, a second stainless steel graphite wound gasket, a third stainless steel filter screen, a fourth stainless steel filter screen and a fifth stainless steel filter screen, the fifth stainless steel filter screen is arranged at the bottom of the seamless steel pipe, the fourth stainless steel filter screen is arranged at the bottom of the fifth stainless steel filter screen, the third stainless steel filter screen is arranged at the bottom of the fourth stainless steel filter screen, the second stainless steel graphite wound gasket is respectively arranged on the outer side surfaces of the third stainless steel filter screen, the fourth stainless steel filter screen and the fifth stainless steel filter screen, the second flange pair is arranged at the bottom of the second stainless steel graphite wound gasket, the heat transfer oil inlet and outlet pipes include a welding flange, a fourth seamless Steel pipe, special manhole flange, high temperature resistant rubber ring, special pressure plate flange, fastening bolts, spring washers and threaded connection flange, the special manhole flange is fixedly installed on both sides of the lower tank body, the fourth seamless steel pipe is fixedly installed inside the special manhole flange, the welding flange is fixedly installed on one end of the fourth seamless steel pipe, the threaded connection flange is fixedly installed on the other end of the fourth seamless steel pipe, the high temperature resistant rubber ring is sleeved on the outer side of the fourth seamless steel pipe, the special pressure plate flange is arranged on the outer side of the high temperature resistant rubber ring, the spring washer is arranged on the outer side of the fastening bolts, and the fastening bolts are respectively arranged inside the special pressure plate flange.

[0020] Preferably, a conduit is fixedly mounted on the output end of the adsorbent discharge hole, and a valve body is fixedly mounted on the bottom of the conduit.

[0021] Compared with related technologies, the temperature-variable negative pressure adsorption tower for carbon dioxide in flue gas from non-ferrous metallurgical furnaces provided by the present invention has the following beneficial effects:

[0022] The utility model provides a variable temperature negative pressure adsorption tower for carbon dioxide in the flue gas of a non-ferrous metallurgical furnace. By adopting the design of a built-in heat exchange ring tube and a second seamless steel pipe connecting the related system, the temperature in the adsorption tower can be quickly increased, the adsorbed carbon dioxide is quickly desorbed, and the treatment efficiency of the carbon dioxide is improved. After the desorption is completed, the heat transfer oil can be discharged, the rational utilization of resources is achieved, and energy consumption is reduced. Compared with traditional physical and chemical absorption methods, the high energy consumption problem is avoided, and the equipment running cost and operation cost are reduced. Carbon dioxide is adsorbed by a porous aminated carbon-based adsorbent, so that a large amount of chemical reagents is not required, the adverse effects on other components in the flue gas are reduced, the destruction of useful components in the flue gas is avoided, and the risk of secondary pollution is reduced. When treating large-scale flue gas, the separation and capture of carbon dioxide can be achieved more efficiently, overcoming the limitations of traditional technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a first embodiment of a temperature-variable negative pressure adsorption tower for carbon dioxide from flue gas in a non-ferrous metallurgical furnace provided by the utility model;

[0024] Figure 2 for Figure 1 The schematic diagram of the shell structure shown;

[0025] Figure 3 for Figure 1 The schematic diagram of the air intake tee structure is shown;

[0026] Figure 4 for Figure 1 The schematic diagram of the air inlet diffuser structure shown;

[0027] Figure 5 for Figure 1 The schematic diagram of the internal heat exchange loop tube structure is shown;

[0028] Figure 6 for Figure 1 Schematic diagram of the lower structure of the built-in heat exchange loop tube shown;

[0029] Figure 7 for Figure 1 Schematic diagram of the upper structure of the built-in heat exchange loop tube shown;

[0030] Figure 8 for Figure 1 Schematic diagram of the air outlet structure shown;

[0031] Figure 9 for Figure 1 The schematic diagram of the heat transfer oil inlet and outlet pipe structure shown;

[0032] Figure 10 This is a structural schematic diagram of a second embodiment of a temperature-variable negative pressure adsorption tower for carbon dioxide from flue gas in a non-ferrous metallurgical furnace provided by the utility model.

[0033] Numbers in the figure: 14a, porous aminated carbon-based adsorbent, 21a, adsorbent loading hole, 22a, adsorbent unloading hole, 23a, local pressure gauge, 24a, positive pressure sensor, 25a, negative pressure sensor,

[0034] 15a, shell, 26a, lower tank body, 27a, upper head, 28a, connecting flange pair, 29a, thermal oil supply jacket, 30a, insulation layer and aluminum protective plate, 31a, support leg, 32a, adsorbent loading hole socket, 33a, adsorbent discharge hole socket, 34a, internal heat exchange loop oil inlet socket, 35a, internal heat exchange loop oil outlet socket, 36a, jacket oil inlet, 37a, jacket oil outlet, 38a, carbon dioxide outlet, 39a, negative pressure sensor interface, 40a, positive pressure sensor interface;

[0035] 41a, acid-resistant rubber lining;

[0036] 16a, air inlet tee, 42a, flange seamless steel pipe, 43a, seamless steel pipe, 44a, flange;

[0037] 17a, air inlet diffuser, 45a, second seamless steel pipe, 46a, diffuser seamless steel pipe, 47a, air inlet flange, 48a, first flange pair, 49a, stainless steel graphite spiral wound gasket, 50a, first stainless steel filter screen, 51a, second stainless steel filter screen;

[0038] 18a, internal heat exchange ring pipe, 52a, inlet flange pipe, 53a, lower outer ring pipe, 54a, lower inner ring pipe, 55a, ring pipe connecting pipe, 56a, outer ring heat exchange pipe, 57a, inner ring heat exchange pipe, 58a, upper inner ring pipe, 59a, upper outer ring pipe, 60a, outlet flange pipe;

[0039] 19a, air outlet, 61a, third seamless steel pipe, 62a, second flange pair, 63a, stainless steel graphite spiral wound gasket, 64a, third stainless steel filter, 65a, fourth stainless steel filter, 66a, fifth stainless steel filter;

[0040] 20a, thermal oil inlet and outlet pipes, 67a, welding flange, 68a, fourth seamless steel pipe, 69a, special manhole flange, 70a, high-temperature resistant rubber ring, 71a, special pressure plate flange, 72a, fastening bolts, 73a, spring washer, 74a, threaded connection flange;

[0041] 221a, conduit, 222a, valve body. DETAILED DESCRIPTION

[0042] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0043] First embodiment

[0044] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 ,in, Figure 1 This is a structural schematic diagram of a first embodiment of a temperature-variable negative pressure adsorption tower for carbon dioxide from flue gas in a non-ferrous metallurgical furnace provided by the utility model; Figure 2 for Figure 1 The schematic diagram of the shell structure shown; Figure 3 for Figure 1 The schematic diagram of the air intake tee structure is shown; Figure 4 for Figure 1 The schematic diagram of the air inlet diffuser structure shown; Figure 5 for Figure 1 The schematic diagram of the internal heat exchange loop tube structure is shown; Figure 6 for Figure 1 Schematic diagram of the lower structure of the built-in heat exchange loop tube shown; Figure 7 for Figure 1 Schematic diagram of the upper structure of the built-in heat exchange loop tube shown; Figure 8 for Figure 1 Schematic diagram of the air outlet structure shown; Figure 9 for Figure 1 A schematic diagram of the heat transfer oil inlet and outlet pipe structure is shown. A non-ferrous metallurgical furnace flue gas carbon dioxide temperature-variable negative pressure adsorption tower comprises: a shell 15a, the top of which is respectively provided with an on-site pressure gauge 23a, a positive pressure sensor 24a, and a negative pressure sensor 25a;

[0045] An air inlet tee 16a is provided at the bottom of the housing 1a;

[0046] An air inlet diffuser 17a is provided on the inner side of the housing 15a, and an input end of the air inlet diffuser 17a is connected to an output end of the air inlet tee 16a;

[0047] An internal heat exchange loop pipe 18a is provided on the inner side of the shell 15a, and the input and output ends of the internal heat exchange loop pipe 18a are both connected to the heat transfer oil inlet and outlet pipes 20a;

[0048] An air outlet and diffuser port 19a is provided on the inner side of the housing 15a;

[0049] An adsorbent loading hole 21a, which is provided at the top of the housing 15a;

[0050] An adsorbent discharge hole 22a, which is provided on the side of the housing 15a;

[0051] The porous aminated carbon-based adsorbent 14a is disposed on the inner side of the shell 15a.

[0052] The shell 15a includes a lower tank body 26a, an upper head 27a, a connecting flange pair 28a, a heat transfer oil supply jacket 29a, an insulation layer and an aluminum protective plate 30a, a support leg 31a, an adsorbent loading hole socket 32a, an adsorbent discharge hole socket 33a, an internal heat exchange loop oil inlet socket 34a, an internal heat exchange loop oil outlet socket 35a, a jacket oil inlet 36a, a jacket oil outlet 37a, a carbon dioxide outlet 38a, and a negative pressure sensor. The interface 39a and the positive pressure sensor interface 40a, the upper head 27a is arranged on the top of the lower tank body 26a, the connecting flange pair 28a is respectively arranged at the two ends of the bottom of the upper head 27a and the two ends of the top of the lower tank body 26a, the thermal oil heating jacket 29a is arranged on the outer side of the lower tank body 26a, the insulation layer and the aluminum protective plate 30a are arranged on the outer side of the lower tank body 26a, and the legs 31a are respectively fixedly mounted on Around the bottom of the lower tank body 26a, the adsorbent loading hole pipe seat 32a is fixedly mounted on the top of the upper head 27a, the adsorbent unloading hole pipe seat 33a is fixedly mounted on the side of the lower tank body 26a, the internal heat exchange loop oil inlet pipe seat 34a is fixedly mounted on the other side of the lower tank body 26a, the internal heat exchange loop oil outlet pipe seat 35a is fixedly mounted on one side of the lower tank body 26a, the jacket oil outlet 37a is fixedly mounted on the top of one side of the lower tank body 26a, the carbon dioxide outlet 38a is fixedly mounted on the top of the upper head 27a, the negative pressure sensor interface 39a is fixedly mounted on the top of the upper head 27a, the positive pressure sensor interface 40a is fixedly mounted on the top of the upper head 27a, and the interior of the lower tank body 26a, the upper head 27a and the connecting flange pair 28a are all provided with an acid-resistant rubber lining 41a.

[0053] The acid-resistant rubber lining 41a is used to prevent the corrosive and harmful substances in the flue gas from corroding the tank body.

[0054] The adsorbent loading hole connecting pipe seat 32a is fixedly installed at the bottom of the adsorbent loading hole 21a, the adsorbent unloading hole connecting pipe seat 33a is fixedly installed on one side of the adsorbent unloading hole 22a, the negative pressure sensor interface 39a is fixedly installed at the bottom of the negative pressure sensor 25a, and the positive pressure sensor interface 40a is fixedly installed at the bottom of the positive pressure sensor 24a.

[0055] The air inlet tee 16a includes a flange seamless steel pipe 42a, a first seamless steel pipe 43a and a flange 44a. The first seamless steel pipe 43a is fixedly installed at the bottom of the flange seamless steel pipe 42a. The flanges 44a are respectively fixedly installed at both ends of the first seamless steel pipe 43a. The air inlet diffuser 17a includes a second seamless steel pipe 45a, a diffuser seamless steel pipe 46a, an air inlet flange 47a, a first flange pair 48a, a stainless steel graphite wound pad 49a, a first stainless steel filter screen 50a and a second stainless steel filter screen 51a. The diffuser seamless steel pipe 46a is fixedly installed. It is installed at the bottom of the second seamless steel pipe 45a, the air inlet flange 47a is fixedly installed at the bottom of the diffuser seamless steel pipe 46a, the air inlet flange 47a is fixedly installed at the top of the first seamless steel pipe 43a, the first flange pair 48a is respectively arranged at both ends of the second seamless steel pipe 45a, the first stainless steel filter screen 50a and the second stainless steel filter screen 51a are respectively arranged on the sides of the two first flange pairs 48a, and the stainless steel graphite wound pad 49a is arranged on the outer sides of the first stainless steel filter screen 50a and the second stainless steel filter screen 51a.

[0056] The internal heat exchange loop pipe 18a includes an inlet flange pipe 52a, a lower outer ring pipe 53a, a lower inner ring pipe 54a, a ring pipe connecting pipe 55a, an outer ring heat exchange pipe 56a, an inner ring heat exchange pipe 57a, an upper inner ring pipe 58a, an upper outer ring pipe 59a and an outlet flange pipe 60a. The lower outer ring pipe 53a is fixedly installed on the output end of the inlet flange pipe 52a, the lower inner ring pipe 54a is arranged on the inner side surface of the lower outer ring pipe 53a, and the outer ring heat exchange pipe 56a is fixedly installed on the top of the lower outer ring pipe 53a. The upper outer ring tube 56a is fixedly installed on the top of the outer ring heat exchange tube 56a, the inner ring heat exchange tube 57a is fixedly installed on the top of the lower inner ring tube 54a, the upper inner ring tube 58a is fixedly installed on the top of the inner ring heat exchange tube 57a, the input end of the outlet flange pipe 60a is fixedly installed on the output end of the upper outer ring tube 59a, and the ring tube connecting tube 55a is respectively fixedly installed in the middle of the lower outer ring tube 53a and the lower inner ring tube 54a and the upper outer ring tube 59a and the upper inner ring tube 58a.

[0057] The gas outlet 19a includes a seamless steel pipe 61a, a second flange pair 62a, a second stainless steel graphite wound gasket 63a, a third stainless steel filter 64a, a fourth stainless steel filter 65a and a fifth stainless steel filter 66a. The fifth stainless steel filter 66a is arranged at the bottom of the seamless steel pipe 61a, the fourth stainless steel filter 65a is arranged at the bottom of the fifth stainless steel filter 66a, the third stainless steel filter 64a is arranged at the bottom of the fourth stainless steel filter 65a, the second stainless steel graphite wound gasket 63a is respectively arranged on the outer sides of the third stainless steel filter 64a, the fourth stainless steel filter 65a and the fifth stainless steel filter 66a, the second flange pair 62a is arranged at the bottom of the second stainless steel graphite wound gasket 63a, and the thermal oil inlet and outlet pipes 20a include a welding flange 67a, a fourth seamless steel pipe 68a , special manhole flange 69a, high temperature resistant rubber ring 70a, special pressure plate flange 71a, fastening bolts 72a, spring washers 73a and threaded connection flange 74a, the special manhole flange 69a are respectively fixedly installed on both sides of the lower tank body 26a, the fourth seamless steel pipe 68a is fixedly installed inside the special manhole flange 69a, the welding flange 67a is fixedly installed on one end of the fourth seamless steel pipe 68a, the threaded connection flange 74a is fixedly installed on the other end of the fourth seamless steel pipe 68a, the high temperature resistant rubber ring 70a is sleeved on the outer side surface of the fourth seamless steel pipe 68a, the special pressure plate flange 71a is arranged on the outer side surface of the high temperature resistant rubber ring 70a, the spring washer 73a is arranged on the outer side surface of the fastening bolts 72a, and the fastening bolts 72a are respectively arranged inside the special pressure plate flange 71a.

[0058] The positive pressure sensor 24a and the negative pressure sensor 25a are used to control the opening and closing of the valve of the positive pressure carbon dioxide gas pipeline, and control the operation of the vacuum pump and the inlet and outlet pipes;

[0059] A connecting flange pair 28a is provided between the lower tank body 26a and the upper head 27a to facilitate the installation of the internal heat exchange loop pipe 18a, as well as to facilitate maintenance and replacement;

[0060] The main function of the heat transfer oil heating jacket 29a is to accelerate the temperature rise in the adsorption tower to quickly desorb the adsorbed carbon dioxide. When the desorption is completed, the heat transfer oil in the heat transfer oil heating jacket 29a needs to be drained;

[0061] One end of the second seamless steel pipe 45a is connected to the valve of the flue gas pipeline after dust removal, pressurization and cooling, and the other end is connected to the valve of the adsorption tower cooling system;

[0062] The main function of the internal heat exchange loop pipe 18a is to accelerate the temperature rise in the adsorption tower to quickly desorb the adsorbed carbon dioxide. When the desorption is completed, the heat transfer oil in the internal heat exchange loop pipe 18a needs to be drained;

[0063] The special manhole flange 69a is matched with the special pressure plate flange 71a according to the diameter of the heat transfer oil inlet and outlet pipes, and threaded holes are drilled; the special manhole flange 69a and the special pressure plate flange 71a can slide freely on the seamless steel pipe 68a, leaving operating space to complete the connection between the heat transfer oil inlet and outlet pipes 20a and the internal heat exchange loop pipe 18a; a high-temperature resistant rubber ring 70a is arranged between the special manhole flange 69a and the special pressure plate flange 71a. When the fastening bolts 72a tighten the special pressure plate flange 71a, the high-temperature resistant rubber ring 70a is deformed, thereby achieving reliable sealing; in order to facilitate the replacement of the rubber ring, the end flange is set as a threaded connection flange 74a.

[0064] Compared with related technologies, the temperature-variable negative pressure adsorption tower for carbon dioxide in flue gas from non-ferrous metallurgical furnaces provided by the present invention has the following beneficial effects:

[0065] By adopting the design of an internal heat exchange loop tube 18a and a second seamless steel pipe 45a to connect the relevant systems, the temperature in the adsorption tower can be quickly increased, the adsorbed carbon dioxide is quickly desorbed, and the treatment efficiency of carbon dioxide is improved. After the desorption is completed, the heat transfer oil can be discharged to achieve rational utilization of resources and reduce energy consumption. Compared with traditional physical and chemical absorption methods, it avoids the problem of high energy consumption and reduces equipment running costs and operating costs; carbon dioxide is adsorbed by a porous aminated carbon-based adsorbent 14a, so that a large amount of chemical reagents is not required, the adverse effects on other components in the flue gas are reduced, the destruction of useful components in the flue gas is avoided, and the risk of secondary pollution is reduced; when treating large-scale flue gas, the separation and capture of carbon dioxide can be achieved more efficiently, overcoming the limitations of traditional technology.

[0066] Second embodiment

[0067] Please refer to Figure 10 Based on the first embodiment of this application, which provides a temperature-swing negative pressure adsorption tower for carbon dioxide from flue gas in nonferrous metallurgical furnaces, the second embodiment of this application provides another temperature-swing negative pressure adsorption tower for carbon dioxide from flue gas in nonferrous metallurgical furnaces. The second embodiment is merely a preferred embodiment of the first embodiment, and implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0068] Specifically, the difference of the second embodiment of the present application in a variable temperature negative pressure adsorption tower for carbon dioxide from flue gas of a non-ferrous metallurgical furnace is that, in a variable temperature negative pressure adsorption tower for carbon dioxide from flue gas of a non-ferrous metallurgical furnace, a conduit 221a is fixedly installed at the output end of the adsorbent discharge hole 22a, and a valve body 222a is fixedly installed at the bottom of the conduit 221a.

[0069] The working principle of the temperature-variable negative pressure adsorption tower for carbon dioxide in flue gas from non-ferrous metallurgical furnaces provided by the utility model is as follows:

[0070] When unloading, the user can open the valve body 222a to allow the porous aminated carbon-based adsorbent 14a to enter the interior of the conduit 221a through the adsorbent discharge hole 22a and then be discharged through the valve body 222a.

[0071] Compared with related technologies, the temperature-variable negative pressure adsorption tower for carbon dioxide in flue gas from non-ferrous metallurgical furnaces provided by the present invention has the following beneficial effects:

[0072] Through the cooperation between the structures such as the conduit 221a and the valve body 222a, when in use, the user only needs to open the valve body 222a to discharge the porous aminated carbon-based adsorbent 14a, which is convenient and quick to operate.

[0073] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A non-ferrous metallurgical furnace flue gas carbon dioxide temperature-swing negative pressure adsorption tower, characterized in that: include: A housing, the top of which is provided with an on-site pressure gauge, a positive pressure sensor, and a negative pressure sensor; An air intake tee, the air intake tee being arranged at the bottom of the shell; An air inlet diffuser is provided on the inner side of the shell, and an input end of the air inlet diffuser is connected to an output end of the air inlet tee; An internal heat exchange loop pipe, the internal heat exchange loop pipe is arranged on the inner side surface of the shell, and the input end and output end of the internal heat exchange loop pipe are both connected to the heat transfer oil inlet and outlet pipes; An air outlet diffuser, the air outlet diffuser being arranged on the inner side surface of the shell; an adsorbent loading hole, the adsorbent loading hole being arranged at the top of the shell; an adsorbent discharge hole, the adsorbent discharge hole being arranged on a side surface of the shell; A porous aminated carbon-based adsorbent is arranged on the inner side of the shell.

2. The non-ferrous metallurgical furnace flue gas carbon dioxide temperature-swing negative pressure adsorption tower according to claim 1, characterized in that: The shell includes a lower tank body, an upper head, a connecting flange pair, a heat-conducting oil heating jacket, an insulation layer and an aluminum protective plate, a support leg, an adsorbent loading hole pipe seat, an adsorbent unloading hole pipe seat, an internal heat exchange loop oil inlet pipe seat, an internal heat exchange loop oil outlet pipe seat, a jacket oil inlet, a jacket oil outlet, a carbon dioxide outlet, a negative pressure sensor interface and a positive pressure sensor interface. The upper head is arranged on the top of the lower tank body, and the connecting flange pair is respectively arranged at the two ends of the bottom of the upper head and the two ends of the top of the lower tank body. The heat-conducting oil heating jacket is arranged on the outer side of the lower tank body, the insulation layer and the aluminum protective plate are arranged on the outer side of the lower tank body, and the support legs are respectively fixedly installed on the bottom of the lower tank body. All around, the adsorbent loading hole socket is fixedly installed on the top of the upper head, the adsorbent unloading hole socket is fixedly installed on the side of the lower tank body, the internal heat exchange loop oil inlet socket is fixedly installed on the other side of the lower tank body, the internal heat exchange loop oil outlet socket is fixedly installed on one side of the lower tank body, the jacket oil outlet is fixedly installed on the top of one side of the lower tank body, the carbon dioxide outlet is fixedly installed on the top of the upper head, the negative pressure sensor interface is fixedly installed on the top of the upper head, the positive pressure sensor interface is fixedly installed on the top of the upper head, and the interior of the lower tank body, the upper head and the connecting flange pair are all provided with acid-resistant rubber lining.

3. The non-ferrous metallurgical furnace flue gas carbon dioxide temperature-swing negative pressure adsorption tower according to claim 1, characterized in that: The adsorbent loading hole connecting pipe seat is fixedly installed on the bottom of the adsorbent loading hole, the adsorbent unloading hole connecting pipe seat is fixedly installed on one side of the adsorbent unloading hole, the negative pressure sensor interface is fixedly installed on the bottom of the negative pressure sensor, and the positive pressure sensor interface is fixedly installed on the bottom of the positive pressure sensor.

4. The non-ferrous metallurgical furnace flue gas carbon dioxide temperature-swing negative pressure adsorption tower according to claim 1, characterized in that: The air inlet tee includes a flange seamless steel pipe, a first seamless steel pipe and a flange. The first seamless steel pipe is fixedly installed at the bottom of the flange seamless steel pipe, and the flange is fixedly installed at both ends of the first seamless steel pipe respectively. The air inlet diffuser includes a second seamless steel pipe, a diffuser seamless steel pipe, an air inlet flange, a first flange pair, a stainless steel graphite wound gasket, a first stainless steel filter screen and a second stainless steel filter screen. The diffuser seamless steel pipe is fixedly installed at the bottom of the second seamless steel pipe, the air inlet flange is fixedly installed at the bottom of the diffuser seamless steel pipe, and the air inlet flange is fixedly installed at the top of the first seamless steel pipe. The first flange pair is respectively arranged at both ends of the second seamless steel pipe, the first stainless steel filter screen and the second stainless steel filter screen are respectively arranged on the sides of the two first flange pairs, and the stainless steel graphite wound gasket is arranged on the outer sides of the first stainless steel filter screen and the second stainless steel filter screen.

5. The non-ferrous metallurgical furnace flue gas carbon dioxide temperature-swing negative pressure adsorption tower according to claim 1, characterized in that: The internal heat exchange ring pipe includes an inlet flange pipe, a lower outer ring pipe, a lower inner ring pipe, a ring pipe connecting pipe, an outer ring heat exchange pipe, an inner ring heat exchange pipe, an upper inner ring pipe, an upper outer ring pipe and an outlet flange pipe. The lower outer ring pipe is fixedly installed on the output end of the inlet flange pipe, the lower inner ring pipe is arranged on the inner side surface of the lower outer ring pipe, the outer ring heat exchange pipe is fixedly installed on the top of the lower outer ring pipe, the upper outer ring pipe is fixedly installed on the top of the outer ring heat exchange pipe, the inner ring heat exchange pipe is fixedly installed on the top of the lower inner ring pipe, the upper inner ring pipe is fixedly installed on the top of the inner ring heat exchange pipe, the input end of the outlet flange pipe is fixedly installed on the output end of the upper outer ring pipe, and the ring pipe connecting pipe is respectively fixedly installed on the lower outer ring pipe and the lower inner ring pipe and in the middle of the upper outer ring pipe and the upper inner ring pipe.

6. The non-ferrous metallurgical furnace flue gas carbon dioxide temperature-swing negative pressure adsorption tower according to claim 2, characterized in that: The gas outlet comprises a seamless steel pipe, a second flange pair, a second stainless steel graphite wound gasket, a third stainless steel filter screen, a fourth stainless steel filter screen and a fifth stainless steel filter screen. The fifth stainless steel filter screen is arranged at the bottom of the seamless steel pipe, the fourth stainless steel filter screen is arranged at the bottom of the fifth stainless steel filter screen, the third stainless steel filter screen is arranged at the bottom of the fourth stainless steel filter screen, the second stainless steel graphite wound gasket is respectively arranged on the outer sides of the third stainless steel filter screen, the fourth stainless steel filter screen and the fifth stainless steel filter screen, the second flange pair is arranged at the bottom of the second stainless steel graphite wound gasket, the heat transfer oil inlet and outlet pipes comprise a welding flange, a fourth seamless steel pipe, a , special manhole flange, high temperature resistant rubber ring, special pressure plate flange, fastening bolts, spring washers and threaded connection flanges, the special manhole flanges are respectively fixedly installed on both sides of the lower tank body, the fourth seamless steel pipe is fixedly installed inside the special manhole flange, the welding flange is fixedly installed on one end of the fourth seamless steel pipe, the threaded connection flange is fixedly installed on the other end of the fourth seamless steel pipe, the high temperature resistant rubber ring is sleeved on the outer side surface of the fourth seamless steel pipe, the special pressure plate flange is arranged on the outer side surface of the high temperature resistant rubber ring, the spring washer is arranged on the outer side surface of the fastening bolts, and the fastening bolts are respectively arranged inside the special pressure plate flange.

7. The non-ferrous metallurgical furnace flue gas carbon dioxide temperature-swing negative pressure adsorption tower according to claim 1, characterized in that: A conduit is fixedly installed at the output end of the adsorbent discharge hole, and a valve body is fixedly installed at the bottom of the conduit.

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