An experimental device for simulating incineration flue gas absorption

Abstract

The utility model relates to the field of experimental simulation equipment, and discloses an experimental device for simulating incineration flue gas absorption, including a gas mixing device, a water absorption device and an alkali absorption device, wherein the water absorption device includes a first reaction bottle, a first delivery pump, a first absorption tower, a first air guide pipe, a second reaction bottle, a second delivery pump, a second absorption tower, a second air guide pipe, a third reaction bottle, a third delivery pump, a third absorption tower and a third air guide pipe. The experimental device of the utility model narrows the gap with actual industrial equipment, and the experimental data obtained can effectively guide the industry, thereby promoting the development of water absorption resource utilization of acidic gases in flue gas.

Description

Technical Field

[0001] The utility model relates to the field of experimental simulation equipment, in particular to an experimental device for simulating incineration smoke absorption. Background Art

[0002] Incineration is a waste treatment method that refers to the process of making the combustibles in the waste react violently with the oxygen in the air under high temperature conditions, releasing heat and converting into high-temperature gas and a small amount of relatively stable solid residue. Due to its large treatment capacity, good volume reduction and complete harmlessness, the incineration method is increasingly widely used in the treatment of domestic waste and industrial waste. However, since many incineration materials contain a lot of sulfur and chlorine, the flue gas produced by incineration contains acidic gases, which need to be treated by a variety of deacidification processes and enter the absorption tower for absorption and purification before discharge, so that the flue gas meets the emission standards.

[0003] At present, the acidic gases in incineration flue gas are mostly absorbed by alkaline solution, which eventually forms a mixed salt solution. The mixed salt solution needs to be reduced or rendered harmless before being discharged. In many similar reports, there is a high treatment cost, and a large amount of high-salt wastewater that is difficult to treat is generated.

[0004] The acidic gases in the incineration flue gas can also be separated by water absorption to separate the acidic components. No waste is generated during the treatment process and the useful components in the flue gas can be recovered, which can achieve the purpose of resource utilization of the acidic gases in the incineration flue gas.

[0005] The method of using water absorption to treat acid gases in incineration flue gas is currently not widely used in industry and requires simulation research in the laboratory. When conducting simulation research in the laboratory, conventional glass instruments are usually used. Due to the large gap between conventional glass instruments and actual industrial equipment, the data obtained are usually unable to provide effective guidance for actual industry. Therefore, it is urgent to design a reliable experimental device to replace conventional glass instruments for simulation absorption experiments to promote the development of water absorption resource utilization of acid gases in flue gas. Utility Model Content

[0006] Based on the above problems, the purpose of the utility model is to provide an experimental device for simulating incineration flue gas absorption to solve the problems existing in the above-mentioned prior art.

[0007] The utility model adopts the following technical solutions:

[0008] The utility model provides an experimental device for simulating incineration smoke absorption, comprising:

[0009] A gas mixing device, wherein the gas outlet end of the gas mixing device is connected to the gas inlet end of the water absorption device, and the gas outlet end of the water absorption device is connected to the gas inlet end of the alkali absorption device;

[0010] The water absorption device includes a first reaction bottle, the air inlet end of the first reaction bottle is connected to the air outlet end of the gas mixing device, the water outlet end of the first reaction bottle is connected to the top of the first absorption tower through a first delivery pump, and the bottom of the first absorption tower is connected to the air outlet end of the first reaction bottle; the top of one side of the first absorption tower is connected to the air inlet end of the second reaction bottle through a first air guide pipe, the water outlet end of the second reaction bottle is connected to the top of the second absorption tower through a second delivery pump, and the bottom of the second absorption tower is connected to the air outlet end of the second reaction bottle; the top of one side of the second absorption tower is connected to the air inlet end of the third reaction bottle through a second air guide pipe, the water outlet end of the third reaction bottle is connected to the top of the third absorption tower through a third delivery pump, and the bottom of the third absorption tower is connected to the air outlet end of the third reaction bottle; the top of one side of the third absorption tower is connected to the air inlet end of the alkali absorption device through a third air guide pipe.

[0011] Furthermore, the gas mixing device includes a carrier gas bottle, a hydrogen chloride bottle and a sulfur dioxide bottle, the gas outlet end of the carrier gas bottle is connected to the interior of the water vapor generating device through a first pipeline, and the gas outlet end of the water vapor generating device is connected to the gas inlet end of the first reaction bottle through a second pipeline; the gas outlet end of the hydrogen chloride bottle and the gas outlet end of the sulfur dioxide bottle are connected to the second pipeline through a third pipeline and a fourth pipeline respectively, and the first pipeline, the third pipeline and the fourth pipeline are all provided with flow meters.

[0012] Furthermore, the water vapor generating device includes a first heating part, a fourth reaction bottle is arranged on the first heating part, the first pipeline extends into the fourth reaction bottle from one end away from the carrier gas bottle, and the second pipeline is connected to the gas outlet end of the fourth reaction bottle.

[0013] Furthermore, a first thermometer is provided in the fourth reaction bottle.

[0014] Furthermore, the alkali absorption device includes a first alkali absorption bottle, one end of the third air duct away from the third absorption tower extends into the first alkali absorption bottle, the gas outlet end of the first alkali absorption bottle is connected to a fourth air duct, and one end of the fourth air duct away from the first alkali absorption bottle extends into the second alkali absorption bottle.

[0015] Furthermore, the first alkali absorption bottle and the second alkali absorption bottle are both provided with a second thermometer.

[0016] Furthermore, the first reaction bottle, the second reaction bottle, and the third reaction bottle are respectively arranged on the second heating part.

[0017] Furthermore, the exteriors of the second pipeline, the first air duct, the second air duct, the third air duct, the first absorption tower, the second absorption tower and the third absorption tower are all provided with electric heating cables.

[0018] Compared with the prior art, the beneficial technical effects of the utility model are:

[0019] The experimental device of the utility model narrows the gap with actual industrial equipment, and the experimental data obtained can effectively guide the industry, thereby promoting the development of water absorption and resource utilization of acidic gases in flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 The utility model is a schematic diagram of the structure of an experimental device for simulating incineration smoke absorption.

[0022] Description of the accompanying drawings: 1. gas mixing device; 101. carrier gas bottle; 102. hydrogen chloride bottle; 103. sulfur dioxide bottle; 104. first pipeline; 105. water vapor generating device; 1051. first heating part; 1052. fourth reaction bottle; 106. second pipeline; 107. third pipeline; 108. fourth pipeline; 109. flow meter; 110. first thermometer; 2. water absorption device; 201. first reaction bottle; 202. first delivery pump; 203. The first absorption tower; 204, the first air duct; 205, the second reaction bottle; 206, the second delivery pump; 207, the second absorption tower; 208, the second air duct; 209, the third reaction bottle; 210, the third delivery pump; 211, the third absorption tower; 212, the third air duct; 2000, the second heating part; 3, the alkali absorption device; 301, the first alkali absorption bottle; 302, the fourth air duct; 303, the second alkali absorption bottle; 304, the second thermometer; 4, the electric heating belt. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1As shown, this embodiment discloses an experimental device for simulating the absorption of incineration smoke, comprising a gas mixing device 1, wherein the gas outlet end of the gas mixing device 1 is connected to the gas inlet end of the water absorption device 2, and the gas outlet end of the water absorption device 2 is connected to the gas inlet end of the alkali absorption device 3; the water absorption device 2 comprises a first reaction bottle 201, wherein the gas inlet end of the first reaction bottle 201 is connected to the gas outlet end of the gas mixing device 1, the water outlet end of the first reaction bottle 201 is connected to the top of the first absorption tower 203 through a first delivery pump 202, and the bottom of the first absorption tower 203 is connected to the gas outlet end of the first reaction bottle 201; the top of one side of the first absorption tower 203 is connected to the gas outlet end of the first reaction bottle 201 through a first air guide pipe 204. It is connected to the air inlet end of the second reaction bottle 205, the water outlet end of the second reaction bottle 205 is connected to the top of the second absorption tower 207 through the second delivery pump 206, and the bottom of the second absorption tower 207 is connected to the air outlet end of the second reaction bottle 205; the top of one side of the second absorption tower 207 is connected to the air inlet end of the third reaction bottle 209 through the second air duct 208, the water outlet end of the third reaction bottle 209 is connected to the top of the third absorption tower 211 through the third delivery pump 210, and the bottom of the third absorption tower 211 is connected to the air outlet end of the third reaction bottle 209; the top of one side of the third absorption tower 211 is connected to the air inlet end of the alkali absorption device 3 through the third air duct 212.

[0025] In this embodiment, the first reaction bottle 201, the second reaction bottle 205 and the third reaction bottle 209 are all filled with an appropriate amount of water, the first delivery pump 202, the second delivery pump 206 and the third delivery pump 210 are all configured as peristaltic pumps, the first absorption tower 203, the second absorption tower 207 and the third absorption tower 211 are all made of acid- and alkali-resistant polypropylene material, and are filled with ceramic ball ring fillers; the gas mixing device 1 mixes the carrier gas, water vapor, hydrogen chloride and sulfur dioxide gas in proportion, and after mixing, the gas enters the first reaction bottle 201, the first absorption tower 203, the second reaction bottle 205, the second absorption tower 207, the third reaction bottle 209 and the third absorption tower 211 in turn, and the hydrogen chloride in the mixed gas is absorbed in multiple stages; in this process, the first delivery pump 202 transfers the first reaction gas to the first absorption tower 203, the second absorption tower 207, the third absorption tower 21 ... absorption tower 203, the second absorption tower 207, the third absorption tower 211, and the first absorption tower 211 is used for the mixing of the carrier gas, the water vapor, the hydrogen chloride and the sulfur dioxide gas. The water in the reaction bottle 201 is transported to the first absorption tower 203 and flows downward, and the unabsorbed mixed gas in the first reaction bottle 201 enters the first absorption tower 203 and moves upward, and the water and the mixed gas form an up-and-down convection; afterwards, the unabsorbed mixed gas escapes from the top of the first absorption tower 203 and enters the first reaction bottle 201. Similarly, under the action of the second delivery pump 206 and the third delivery pump 210, the unabsorbed mixed gas forms a convection with water in the second absorption tower 207 and the third absorption tower 211 in turn, so as to absorb the hydrogen chloride in the mixed gas; after the hydrogen sulfide gas in the mixed gas is removed by the water absorption device 2, the mixed gas enters the alkali absorption device 3, and the sulfur dioxide in the mixed gas is absorbed by the alkali absorption device 3, and sodium sulfite is formed after absorption. The gas outlet of the alkali absorption device 3 is connected to the outside, that is, the gas coming out of the alkali absorption device 3 is directly vented.

[0026] By adopting this scheme, the experimental device of the utility model narrows the gap with the actual industrial equipment, and the experimental data obtained can effectively guide the industry, thereby promoting the development of water absorption and resource utilization of acidic gases in flue gas.

[0027] According to a further optimization scheme, the gas mixing device 1 comprises a carrier gas bottle 101, a hydrogen chloride bottle 102 and a sulfur dioxide bottle 103; the gas outlet end of the carrier gas bottle 101 is connected to the interior of the water vapor generating device 105 via a first pipeline 104; the gas outlet end of the water vapor generating device 105 is connected to the gas inlet end of the first reaction bottle 201 via a second pipeline 106; the gas outlet end of the hydrogen chloride bottle 102 and the gas outlet end of the sulfur dioxide bottle 103 are connected to the second pipeline 106 via a third pipeline 107 and a fourth pipeline 108 respectively, and flow meters 109 are provided on the first pipeline 104, the third pipeline 107 and the fourth pipeline 108.

[0028] In this embodiment, the carrier gas in the carrier gas bottle 101 can be set to nitrogen, air or carbon dioxide, and the water vapor generator 105 can adjust the amount of water vapor mixed with the carrier gas by temperature change, and the amount of water vapor is measured by weight loss method. The carrier gas enters the water vapor generator 105 after being measured by the flow meter 109, and enters the second pipeline 106 after being mixed with water vapor. The hydrogen chloride bottle 102 gas and the sulfur dioxide gas in the sulfur dioxide bottle 103 are respectively measured by the flow meter 109 and enter the second pipeline 106, and are mixed with the carrier gas containing water vapor, and then enter the first reaction bottle 201 after mixing.

[0029] According to a further optimization scheme, the water vapor generating device 105 includes a first heating part 1051 , on which a fourth reaction bottle 1052 is arranged, the end of the first pipeline 104 away from the carrier gas bottle 101 extends into the fourth reaction bottle 1052 , and the second pipeline 106 is connected to the gas outlet end of the fourth reaction bottle 1052 .

[0030] In this embodiment, the first heating part 1051 is configured as a water bath, and an appropriate amount of water is contained in the fourth reaction bottle 1052. The water in the fourth reaction bottle 1052 is heated in a water bath by the water bath to form water vapor. The carrier gas in the carrier bottle 101 enters the water in the fourth reaction bottle 1052 through the first pipeline 104 and can be mixed with the water vapor in the fourth reaction bottle 1052.

[0031] In a further optimized solution, a first thermometer 110 is provided in the fourth reaction bottle 1052. In this embodiment, the bottom of the first thermometer 110 is inserted into the water in the fourth reaction bottle 1052. The first thermometer 110 can measure the water temperature in the fourth reaction bottle 1052.

[0032] According to a further optimized solution, the alkali absorption device 3 comprises a first alkali absorption bottle 301, one end of the third air duct 212 away from the third absorption tower 211 extends into the first alkali absorption bottle 301, an air outlet end of the first alkali absorption bottle 301 is connected to a fourth air duct 302, and one end of the fourth air duct 302 away from the first alkali absorption bottle 301 extends into the second alkali absorption bottle 303.

[0033] In this embodiment, both the first alkali absorption bottle 301 and the second alkali absorption bottle 303 contain an appropriate amount of alkali absorption liquid. The mixed gas treated by the water absorption device 2 enters the alkali absorption liquid in the first alkali absorption bottle 301 for absorption treatment. The mixed gas not absorbed by the alkali absorption liquid in the first alkali absorption bottle 301 enters the alkali absorption liquid in the second alkali absorption bottle 303 through the fourth air duct 302 for absorption treatment again, and the sulfur dioxide in the mixed gas can be absorbed multiple times; the gas outlet end of the second alkali absorption bottle 303 is connected to the outside, that is, the gas coming out of the second alkali absorption bottle 303 is directly discharged.

[0034] According to a further optimization scheme, a second thermometer 304 is provided in both the first alkali absorption bottle 301 and the second alkali absorption bottle 303 .

[0035] In this embodiment, the bottom of the second thermometer 304 is inserted into the alkali absorption liquid in the first alkali absorption bottle 301 and the second alkali absorption bottle 303 respectively, so as to measure the temperature of the alkali absorption liquid.

[0036] According to a further optimized solution, the first reaction bottle 201 , the second reaction bottle 205 , and the third reaction bottle 209 are all disposed on the second heating part 2000 .

[0037] In this embodiment, the second heating unit 2000 is configured as a water bath, which can achieve the effect of heating and keeping warm the water in the first reaction bottle 201 , the second reaction bottle 205 and the third reaction bottle 209 .

[0038] To further optimize the solution, electric heating cables 4 are provided outside the second pipeline 106 , the first air duct 204 , the second air duct 208 , the third air duct 212 , the first absorption tower 203 , the second absorption tower 207 and the third absorption tower 211 .

[0039] In this embodiment, the electric heating tape 4 can achieve the effect of heating and keeping warm the mixed gas in the second pipeline 106, the first air duct 204, the second air duct 208, the third air duct 212, the first absorption tower 203, the second absorption tower 207 and the third absorption tower 211.

[0040] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An experimental device for simulating incineration smoke absorption, characterized in that: include: A gas mixing device (1), wherein the gas outlet end of the gas mixing device (1) is connected to the gas inlet end of the water absorption device (2), and the gas outlet end of the water absorption device (2) is connected to the gas inlet end of the alkali absorption device (3); The water absorption device (2) comprises a first reaction bottle (201), the air inlet end of the first reaction bottle (201) is connected to the air outlet end of the gas mixing device (1), the water outlet end of the first reaction bottle (201) is connected to the top of a first absorption tower (203) via a first delivery pump (202), and the bottom of the first absorption tower (203) is connected to the air outlet end of the first reaction bottle (201); the top of one side of the first absorption tower (203) is connected to the air inlet end of a second reaction bottle (205) via a first air guide pipe (204), and the water outlet end of the second reaction bottle (205) is connected to the second absorption tower (206) via a second delivery pump (207). The top of the second absorption tower (207) is connected to the top of the third reaction bottle (207), and the bottom of the second absorption tower (207) is connected to the gas outlet end of the second reaction bottle (205); the top of one side of the second absorption tower (207) is connected to the gas inlet end of the third reaction bottle (209) through the second air duct (208), the water outlet end of the third reaction bottle (209) is connected to the top of the third absorption tower (211) through the third delivery pump (210), and the bottom of the third absorption tower (211) is connected to the gas outlet end of the third reaction bottle (209); the top of one side of the third absorption tower (211) is connected to the gas inlet end of the alkali absorption device (3) through the third air duct (212).

2. The experimental device for simulating incineration smoke absorption according to claim 1, characterized in that: The gas mixing device (1) comprises a carrier gas bottle (101), a hydrogen chloride bottle (102) and a sulfur dioxide bottle (103); the gas outlet end of the carrier gas bottle (101) is connected to the interior of a water vapor generating device (105) via a first pipeline (104); the gas outlet end of the water vapor generating device (105) is connected to the gas inlet end of the first reaction bottle (201) via a second pipeline (106); the gas outlet end of the hydrogen chloride bottle (102) and the gas outlet end of the sulfur dioxide bottle (103) are connected to the second pipeline (106) via a third pipeline (107) and a fourth pipeline (108) respectively; and flow meters (109) are provided on the first pipeline (104), the third pipeline (107) and the fourth pipeline (108).

3. The experimental device for simulating incineration smoke absorption according to claim 2, characterized in that: The water vapor generating device (105) comprises a first heating part (1051), a fourth reaction bottle (1052) is arranged on the first heating part (1051), an end of the first pipeline (104) away from the carrier gas bottle (101) extends into the fourth reaction bottle (1052), and the second pipeline (106) is connected to the gas outlet end of the fourth reaction bottle (1052).

4. The experimental device for simulating incineration smoke absorption according to claim 3, characterized in that: The fourth reaction bottle (1052) is provided with a first thermometer (110).

5. The experimental device for simulating incineration smoke absorption according to claim 1, characterized in that: The alkali absorption device (3) comprises a first alkali absorption bottle (301), one end of the third air guide pipe (212) away from the third absorption tower (211) extends into the first alkali absorption bottle (301), a gas outlet end of the first alkali absorption bottle (301) is connected to a fourth air guide pipe (302), and one end of the fourth air guide pipe (302) away from the first alkali absorption bottle (301) extends into a second alkali absorption bottle (303).

6. The experimental device for simulating incineration smoke absorption according to claim 5, characterized in that: The first alkali absorption bottle (301) and the second alkali absorption bottle (303) are both provided with a second thermometer (304).

7. The experimental device for simulating incineration smoke absorption according to claim 1, characterized in that: The first reaction bottle (201), the second reaction bottle (205), and the third reaction bottle (209) are respectively arranged on the second heating part (2000).

8. The experimental device for simulating incineration smoke absorption according to claim 2, characterized in that: The second pipeline (106), the first air duct (204), the second air duct (208), the third air duct (212), the first absorption tower (203), the second absorption tower (207) and the third absorption tower (211) are all provided with electric heating cables (4) on the outside.

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