CN114260002A - Active coke analysis device and application thereof - Google Patents
Active coke analysis device and application thereof Download PDFInfo
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- CN114260002A CN114260002A CN202111346069.6A CN202111346069A CN114260002A CN 114260002 A CN114260002 A CN 114260002A CN 202111346069 A CN202111346069 A CN 202111346069A CN 114260002 A CN114260002 A CN 114260002A
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- 239000000571 coke Substances 0.000 title claims abstract description 169
- 238000001816 cooling Methods 0.000 claims abstract description 91
- 239000003546 flue gas Substances 0.000 claims abstract description 76
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000498 cooling water Substances 0.000 claims abstract description 20
- 238000003795 desorption Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 11
- 229910052717 sulfur Inorganic materials 0.000 description 11
- 239000011593 sulfur Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The invention provides an active coke analysis device and application thereof. The active coke analysis device is of a vertical cylinder structure and comprises an analysis coke inlet, a preheating section, an analysis section, an air cooling section, a water cooling section and an analysis coke outlet which are sequentially communicated from top to bottom; the preheating section is provided with a preheating flue gas inlet, a preheating flue gas outlet and a first heat exchange tube; the resolving section is provided with a high-temperature flue gas inlet, a high-temperature flue gas outlet and a second heat exchange tube; the air cooling section is provided with a cooling air inlet, a cooling air outlet and a third heat exchange tube; the water cooling section is provided with a cooling water inlet, a cooling water outlet and a fourth heat exchange tube. The utility model provides an analytical device has analytic efficient, and energy utilization is high and the good advantage of security.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to an active coke analysis device and application thereof.
Background
Sulfur in steel mill flue gas is recycled, currently, a granular coke flue gas desulfurization technology is mostly adopted, and granular active coke is firstly utilized to adsorb SO in the flue gas2Then the active coke is analyzed and regenerated.The existing active coke analysis device adopts a shell-and-tube structure or a rotary analysis device. The shell-and-tube structure mostly adopts the shell pass of active coke and the tube pass of desorption hot flue gas. Incomplete regeneration of the activated coke of this structure, SO2The analysis was incomplete. The rotary analysis device has small single analysis capability and is rotary equipment, and the sealing performance cannot be ensured.
Disclosure of Invention
To the shortcoming that exists among the prior art, the utility model provides a form active coke regeneration analytic device. Adsorption of SO2The saturated active coke is regenerated by the device and then recycled to the active coke adsorption unit to adsorb SO in the flue gas2. The utility model provides an analytical device has analytic efficient, and energy utilization is high and the good advantage of security.
The first aspect of the application provides an active coke analysis device which is of a vertical cylinder structure and comprises an analysis coke inlet, a preheating section, an analysis section, an air cooling section, a water cooling section and an analysis coke outlet which are sequentially arranged from top to bottom;
the lower part of the preheating section is provided with a preheating flue gas inlet, the upper part of the preheating section is provided with a preheating flue gas outlet, and a first heat exchange tube is arranged in the preheating section;
the lower part of the desorption section is provided with a high-temperature flue gas inlet, the upper part of the desorption section is provided with a high-temperature flue gas outlet, and a second heat exchange tube is arranged inside the desorption section;
the lower part of the air cooling section is provided with a cooling air inlet, the upper part of the air cooling section is provided with a cooling air outlet, and a third heat exchange tube is arranged inside the air cooling section;
the lower part of the water cooling section is provided with a cooling water inlet, the upper part of the water cooling section is provided with a cooling water outlet, and a fourth heat exchange tube is arranged inside the water cooling section;
the coke resolving inlet is communicated with the coke resolving outlet through the first heat exchange tube, the second heat exchange tube, the third heat exchange tube and the fourth heat exchange tube.
According to some embodiments of the present application, at least one of the first heat exchange section, the second heat exchange tube, the third heat exchange tube, and the fourth heat exchange tube has an inner diameter of 80mm to 120 mm. In this application, the setting of heat exchange tube can guarantee that analytic burnt normally flows under the action of gravity from top to bottom in the heat exchange tube, guarantees as much as possible heat transfer area in order to guarantee in limited space, and the arrangement of heat exchange tube adopts top-down run-through formula to arrange.
According to some embodiments of the present application, the first heat exchange tube and/or the second heat exchange tube is made of stainless steel. According to some embodiments of the present application, the shells of the preheating section and the desorption section are also made of stainless steel. In this application, the preheating stage and the analysis stage may have SO2And the stainless steel pipe can prevent the heat exchange pipe from being corroded.
According to some embodiments of the present application, the third heat exchange tube and/or the fourth heat exchange tube is made of carbon steel. According to some embodiments of the present application, the shells of the air cooling section and the water cooling section are also made of carbon steel.
According to some embodiments of the present application, a cavity is provided between the preheating section and the desorption section, and a desorption gas outlet is provided on the cavity.
According to some embodiments of the application, the cavity has a length of 500mm to 1000 mm.
According to some embodiments of the present application, a cavity is disposed between the resolving coke inlet and the preheating section. According to some embodiments of the present application, a cavity is disposed between the desorption stage and the air-cooling stage. According to some embodiments of the application, a cavity is provided between the air-cooling section and the water-cooling section. According to some embodiments of the present application, a cavity is disposed between the water cooled section and the coke resolving outlet. In this application, the cavity plays the effect of buffering, and the both ends of each cavity all are provided with the end plate, and the end plate plays sealed effect, guarantees that the inside active burnt of heat exchange tube can get into cavity department.
According to some embodiments of the present application, a rotary discharge valve is provided at the coke resolving inlet and/or the coke resolving outlet. According to some embodiments of the present application, the rotary discharge valve is a double layer rotary discharge valve. In the application, the double-layer rotary unloading has good sealing performance, can effectively prevent environmental air from leaking into the analysis device, and ensures that the volume content of oxygen in the system of the analysis device is controlled below 6%; in addition, the rotary discharge valve arranged at the coke desorption outlet can control the retention time of the active coke in the desorption device through variable frequency speed regulation.
According to some embodiments of the present application, one or more baffles are disposed in the desorption section, and preferably, the distance between adjacent baffles is 80-120cm, so that the residence time and the heat exchange efficiency of the high-temperature flue gas in the desorption section can be improved.
According to some embodiments of the application, the analytic device can adopt a suspension type supporting structure or add between analytic section and air cooling section and establish the expansion joint, can effectively prevent analytic equipment from producing stress failure under high temperature operating temperature thermal expansion. According to this application, analytical equipment only a department supports fixing device, and strutting arrangement sets up in preheating section shell body department, and when normal work, because the temperature risees, whole analytical equipment takes place thermal expansion, sets up a suspension type strutting arrangement, and vertical direction can be followed to whole analytical equipment and carries out the thermal expansion downwards. According to some embodiments of the application, the expansion joint is a metal bellows expansion joint, and the expansion joint is arranged between the analysis section and the cooling section, so that the expansion amount can be effectively absorbed.
According to some embodiments of the present application, the corners of the housing in the desorption device are rounded off, and the radius of the rounded off transition is 150-300mm, so as to effectively prevent the active coke from being accumulated in the desorption device.
A second aspect of the present application provides a method for resolving active coke using the apparatus of the first aspect, comprising the steps of:
s1: will adsorb SO2The active coke is sent into a preheating section for preheating to obtain preheated active coke;
s2: the preheated active coke enters an analysis section for analysis treatment to obtain analyzed active coke;
s3: the resolved active coke enters an air cooling section for primary cooling to obtain the primarily cooled active coke;
s4: and finally cooling the primarily cooled active coke in a water cooling section, and discharging the active coke from the coke resolving outlet to obtain regenerated active coke.
In the application, the inventor finds that the analyzed active coke is cooled by two stages of an air cooling section and a water cooling section, and has a remarkable advantage compared with the active coke which is cooled by only air. On one hand, if only air cooling is adopted, the heat exchange area of the air cooling pipe is large, and the height of the air cooling section is high under the condition that the heat exchange pipe is fixed, so that the overall height of the equipment is increased; on the other hand, the air cooling is influenced by the atmospheric temperature greatly, and the atmospheric temperature is high, and the cooling effect of active coke hardly reaches the temperature requirement after cooling, and under this condition, the water-cooling cooler is put into use, can play the effect of guaranteeing safety, is unlikely to because the too high potential safety hazard of appearing of refrigerated active coke temperature.
According to some embodiments of the present application, in step S1, the preheated flue gas enters the outside of the first heat exchange tube in the preheating section from the preheated flue gas inlet to adsorb SO2The active coke enters the first heat exchange tube from the coke analysis inlet to be preheated, so that preheated active coke is obtained, and preheated flue gas is discharged from the preheated flue gas outlet. According to some embodiments of the present application, the preheated flue gas is desorbed high temperature flue gas.
According to some embodiments of the present application, in step S2, the high temperature flue gas enters the outside of the second heat exchange tube through the high temperature flue gas inlet, so that the preheated active coke is desorbed, and the desorbed high temperature flue gas is discharged through the high temperature flue gas outlet.
According to some embodiments of the present application, the uniformity of the distribution of the active coke at the inlet of the desorption section is sufficient to ensure that the cavity at the upper part of the desorption section is always filled with the active coke. Meanwhile, in order to prevent air from permeating into the analyzer, the analyzer needs to be continuously purged with nitrogen gas for sealing.
According to some embodiments of the present application, in step S3, the cooling air enters the air cooling section through the cooling air inlet, is primarily cooled, and then is discharged through the cooling air outlet. According to some embodiments of the present application, the cooling air is natural air.
According to some embodiments of the present application, in step S4, the circulating cooling water enters the water cooling section through the cooling water inlet, is finally cooled, and then is discharged through the cooling water outlet.
According to some embodiments of the present application, in step S1, the activated coke is granular activated coke.
According to some embodiments of the present application, in step S1, the granular activated coke has a three-dimensional particle size of 20mm or less.
In the method for resolving the active coke, the active coke is moved inside the heat exchange tube, and the high-temperature flue gas is moved outside the heat exchange tube, so that on one hand, the high-temperature flue gas heat exchange space is large, and the high-temperature flue gas resistance is greatly reduced, and if the active coke is moved outside the heat exchange tube and the high-temperature flue gas is moved inside the heat exchange tube, the flue gas resistance is higher, and compared with the pressure loss of the active coke moving tube, the pressure loss is more than 500-800 Pa; on the other hand, the activated coke in the heat exchange tube is uniformly heated, so that the sulfur adsorption capacity of the obtained regenerated activated coke can reach 95 percent or even higher of that of the newly prepared activated coke, and if the activated coke is led away from the outside of the heat exchange tube and high-temperature flue gas is led away from the inside of the heat exchange tube, the activated coke is not uniformly heated, a semi-generated body is easy to appear, and the sulfur adsorption capacity of the obtained regenerated activated coke is 85 to 90 percent of that of the newly prepared activated coke.
According to some embodiments of the present application, in step S2, the temperature of the resolving process is 450 ℃ to 500 ℃ for 40min to 60 min.
According to some embodiments of the present application, in step S2, the temperature of the high temperature flue gas at the high temperature flue gas inlet is 450 ℃ to 500 ℃, and the temperature of the high temperature flue gas at the high temperature flue gas outlet is 300 ℃ to 400 ℃.
According to some embodiments of the present application, the temperature of the preheated activated coke is 150 ℃ to 200 ℃ in step S1.
According to some embodiments of the present application, the temperature of the resolved activated coke in step S2 is 380 ℃ to 420 ℃.
According to some embodiments of the present application, the temperature of the primarily cooled activated coke in step S3 is 230 ℃ to 280 ℃.
According to some embodiments of the present application, the temperature of the finally cooled activated coke in step S4 is 80 ℃ to 120 ℃.
A third aspect of the present application provides the use of the apparatus according to the first aspect or the method according to the second aspect in the desulfurization regeneration of active coke.
The beneficial effect of this application:
1. and the analytic regeneration is realized by adopting an indirect heat exchange mode that the active coke is led away from the inside of the heat exchange tube and the high-temperature flue gas is led away from the outside of the heat exchange tube.
2. By adopting the structure, the analysis efficiency is high, and the working sulfur capacity of the analyzed active coke is higher.
3. Resolved SO2Can be rapidly separated out as subsequent SO2Provides a prerequisite for resource utilization.
4. The analyzed high-temperature flue gas is used as a preheating heat source of the preheating section, and the cascade utilization of energy is realized.
5. The resolved active coke is cooled in two stages, so that the safety of the subsequent active coke in the transportation process is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an active coke desorption device according to embodiment 1 of the present application, in which 1 is a desorption coke inlet, 2 is a preheating flue gas outlet, 3 is a first heat exchange tube, 4 is a preheating section, 5 is a preheating flue gas inlet, 6 is a desorption gas outlet, 7 is a high-temperature flue gas outlet, 8 is a second heat exchange tube, 9 is a desorption section, 10 is a high-temperature flue gas inlet, 11 is a cooling air outlet, 12 is a cooling air inlet, 13 is an air cooling section, 14 is a third heat exchange tube, 15 is a cooling water inlet, 16 is a cooling water outlet, 17 is a water cooling section, 18 is a fourth heat exchange tube, and 19 is a desorption coke outlet.
Fig. 2 is a view showing the internal arrangement of the first heat exchange tube 3 of the active coke resolving device according to embodiment 1 of the present application.
Detailed Description
For easy understanding of the present invention, the present invention will be described in detail with reference to examples, which are provided for illustrative purposes only and are not intended to limit the scope of the present invention.
Example 1
The active coke analysis device shown in the figure 1 is adopted and comprises an analysis coke inlet 1, a preheating section 4, an analysis section 9, an air cooling section 13, a water cooling section 17 and an analysis coke outlet 19, wherein the preheating section 4 is provided with a preheating flue gas inlet 5, a preheating flue gas outlet 2 and a first heat exchange tube 3; the resolving section 9 is provided with a high-temperature flue gas inlet 10, a high-temperature flue gas outlet 7 and a second heat exchange tube 8; the air cooling section 13 is provided with a cooling air inlet 12, a cooling air outlet 11 and a third heat exchange pipe 14; the water cooling section 17 is provided with a cooling water inlet 15, a cooling water outlet 16 and a fourth heat exchange pipe 18. The arrangement mode of the first heat exchange tube 3, the second heat exchange tube 8, the third heat exchange tube 14 and the fourth heat exchange tube 18 is shown in figure 2, the inner diameter size is phi 82mm, and the heights are 1.5m, 6m, 3m and 1.5m respectively; the shells of the preheating section 4 and the analysis section 9 and the first heat exchange tube 3 and the second heat exchange tube 8 are made of stainless steel; the shells of the air cooling section 13 and the water cooling section 17 and the third heat exchange tube 14 and the fourth heat exchange tube 18 are made of carbon steel.
A cavity is arranged between the preheating section 4 and the analysis section 9, and an analysis gas outlet 6 is arranged on the cavity; cavities are also arranged between the coke resolving inlet 1 and the preheating section 4, between the resolving section 9 and the air cooling section 13, between the air cooling section 13 and the water cooling section 17 and between the water cooling section 17 and the coke resolving outlet 19. The length of the cavity is 500mm-1000 mm; double-layer rotary discharge valves are arranged at the coke resolving inlet 1 and the coke resolving outlet 19; baffle plates are arranged in the resolving section 9, and the distance between every two adjacent baffle plates is 100 cm; the whole analysis device adopts a suspension type supporting structure; a metal corrugated pipe expansion joint is arranged between the analysis section 9 and the air cooling section 13; the corner of the shell in the analysis device adopts fillet transition, and the radius of the fillet transition is 200 mm.
The steps of adopting the device to analyze the granular active coke are as follows:
s1: will adsorb saturated SO2The granular active coke (the three-dimensional granularity is less than or equal to 20mm) is preheated in a preheating section 4, wherein the granular active coke flows inside a first heat exchange tube 3, the preheated flue gas flows outside the first heat exchange tube 3, the preheating heat source is the flue gas with the temperature of about 350 ℃ discharged from a high-temperature flue gas outlet 7, the flue gas enters the preheating section 4 through a preheated flue gas inlet 5 to obtain preheated active coke, and the preheated active cokeThe temperature of the coke is about 150 ℃, and the preheated flue gas is discharged through the preheated flue gas outlet 2;
s2: carrying out analysis treatment on the preheated active coke in an analysis section 9, wherein high-temperature flue gas enters the analysis section 8 from a high-temperature flue gas inlet 9, granular active coke flows inside a second heat exchange tube 8, the high-temperature flue gas flows outside the second heat exchange tube 8, the high-temperature flue gas and the granular active coke carry out indirect heat exchange through the second heat exchange tube 8, analysis is carried out under the condition of high-temperature flue gas at 450 ℃, the retention time in the analysis section 9 is 60min, so that the analyzed active coke is obtained, and the temperature of the analyzed active coke is about 400 ℃; resolved SO2The gas is pumped out from the desorption gas outlet 6 under the action of the negative pressure fan for resource utilization;
s3: preliminarily cooling the resolved active coke in an air cooling section 13, wherein the cooling air is natural air, the natural air enters the air cooling section 13 from a cooling air inlet 12, the granular active coke flows inside a third heat exchange tube 14, the cooling air flows outside the third heat exchange tube 14 and is cooled to 250 ℃ to obtain preliminarily cooled active coke; the heated cooling air is discharged from a cooling air outlet 11, the temperature is about 250 ℃, and the high-temperature air carries out waste heat utilization;
s4: finally cooling the primarily cooled active coke in a water cooling section 17, wherein circulating cooling water enters the water cooling section 17 from a cooling water inlet 15, granular active coke flows inside a fourth heat exchange tube 18, the circulating cooling water flows outside the fourth heat exchange tube 18, and the finally cooled regenerated active coke with the temperature of about 120 ℃ is discharged through a coke resolving outlet 19; the regenerated active coke is conveyed to SO by a transfer device2The adsorption unit is recycled; the cooled water after temperature rise is discharged from the cooled water outlet 16, and is recycled after temperature reduction.
The adsorption sulfur capacity is tested by adopting the national standard GB/T30202. The regenerated activated coke obtained by the method of this example was tested for its sulfur adsorption capacity (SO adsorbed per gram of activated coke)2The amount (mg)) was 95% of the newly prepared activated coke.
Example 2
Granular active coke analysis was performed using the same active coke analysis apparatus as in example 1, except that the first heat exchange tube 3, the second heat exchange tube 8, the third heat exchange tube 14, and the fourth heat exchange tube 18 had an inner diameter of Φ 60 mm.
The granular activated coke was subjected to the same procedure as in example 1, and the obtained regenerated activated coke was examined for its sulfur adsorption capacity (SO adsorbed per gram of activated coke)2The amount (mg)) is 90% of the newly prepared activated coke.
Example 3
Granular active coke analysis was performed using the same active coke analysis apparatus as in example 1, except that the first heat exchange tube 3, the second heat exchange tube 8, the third heat exchange tube 14, and the fourth heat exchange tube 18 had an inner diameter of Φ 80 mm.
The granular activated coke was subjected to the same procedure as in example 1, and the obtained regenerated activated coke was examined for its sulfur adsorption capacity (SO adsorbed per gram of activated coke)2The amount (mg)) was 95% of the newly prepared activated coke.
Example 4
Granular active coke analysis was performed using the same active coke analysis apparatus as in example 1, except that the first heat exchange tube 3, the second heat exchange tube 8, the third heat exchange tube 14, and the fourth heat exchange tube 18 had an inner diameter of Φ 100 mm.
The granular activated coke was subjected to the same procedure as in example 1, and the obtained regenerated activated coke was examined for its sulfur adsorption capacity (SO adsorbed per gram of activated coke)2The amount (mg)) was 94.5% of the newly prepared activated coke.
Example 5
Granular active coke analysis was performed using the same active coke analysis apparatus as in example 1, except that the first heat exchange tube 3, the second heat exchange tube 8, the third heat exchange tube 14, and the fourth heat exchange tube 18 had an inner diameter of Φ 120 mm.
The granular activated coke was subjected to the same procedure as in example 1, and the obtained regenerated activated coke was examined for its sulfur adsorption capacity (SO adsorbed per gram of activated coke)2The amount (mg)) is 94% of the newly prepared activated coke.
Comparative example 1
The granular active coke desorption is carried out by using an active coke desorption device which is the same as that in the embodiment 1, the difference is that in the desorption process, active coke particles flow outside the heat exchange tube, a medium flows inside the heat exchange tube, specifically, in the step S1, the granular active coke flows outside the first heat exchange tube 3, and the preheated flue gas flows inside the first heat exchange tube 3; in step S2, the granular active coke flows outside the second heat exchange tube 8, and the high-temperature flue gas flows inside the second heat exchange tube 8; in step S3, the granular active coke flows outside the third heat exchange tube 14, and the cooling air flows inside the third heat exchange tube 14; in step S4, the granular activated coke flows outside the fourth heat exchange tube 18, and the circulating cooling water flows inside the fourth heat exchange tube 18.
The regenerated active coke obtained by the method of the comparative example is detected to have the sulfur adsorption capacity (SO adsorbed per gram of active coke)2The amount (mg) of the active coke is 85 to 90 percent of the newly prepared active coke.
It should be noted that the above-mentioned embodiments are only for explaining the present invention, and do not constitute any limitation to the present invention. The present invention has been described with reference to exemplary embodiments, but the words which have been used herein are words of description and illustration, rather than words of limitation. The invention can be modified, as prescribed, within the scope of the claims and without departing from the scope and spirit of the invention. Although the invention has been described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, but rather extends to all other methods and applications having the same functionality.
Claims (10)
1. An active coke analysis device is of a vertical cylinder structure and comprises an analysis coke inlet, a preheating section, an analysis section, an air cooling section, a water cooling section and an analysis coke outlet which are sequentially arranged from top to bottom;
the lower part of the preheating section is provided with a preheating flue gas inlet, the upper part of the preheating section is provided with a preheating flue gas outlet, and a first heat exchange tube is arranged in the preheating section;
the lower part of the desorption section is provided with a high-temperature flue gas inlet, the upper part of the desorption section is provided with a high-temperature flue gas outlet, and a second heat exchange tube is arranged inside the desorption section;
the lower part of the air cooling section is provided with a cooling air inlet, the upper part of the air cooling section is provided with a cooling air outlet, and a third heat exchange tube is arranged inside the air cooling section;
the lower part of the water cooling section is provided with a cooling water inlet, the upper part of the water cooling section is provided with a cooling water outlet, and a fourth heat exchange tube is arranged inside the water cooling section;
the coke resolving inlet is communicated with the coke resolving outlet through the first heat exchange tube, the second heat exchange tube, the third heat exchange tube and the fourth heat exchange tube.
2. The apparatus of claim 1, wherein at least one of the first heat exchange section, the second heat exchange tube, the third heat exchange tube, and the fourth heat exchange tube has an inner diameter of 80mm to 120 mm; and/or
The first heat exchange tube and/or the second heat exchange tube are/is made of stainless steel; and/or
The third heat exchange tube and/or the fourth heat exchange tube are made of carbon steel.
3. The apparatus according to claim 1 or 2, wherein a cavity is arranged between the preheating section and the desorption section, and a desorption gas outlet is arranged on the cavity; preferably, the length of the cavity is 500mm-1000 mm.
4. An apparatus according to any one of claims 1-3, characterized in that the coke resolving inlet and/or the coke resolving outlet is provided with a rotary discharge valve, preferably a double rotary discharge valve.
5. A method of resolving active coke using the apparatus of any one of claims 1-4, comprising the steps of:
s1: will adsorb SO2The active coke is sent into a preheating section for preheating to obtain preheated active coke；
S2: the preheated active coke enters an analysis section for analysis treatment to obtain analyzed active coke;
s3: the resolved active coke enters an air cooling section for primary cooling to obtain the primarily cooled active coke;
s4: and finally cooling the primarily cooled active coke in a water cooling section, and discharging the active coke from the coke resolving outlet to obtain regenerated active coke.
6. The method of claim 5, wherein in step S1, the preheated flue gas enters the outside of the first heat exchange tube in the preheating section from the preheated flue gas inlet to adsorb SO2The active coke enters the first heat exchange tube from the coke analysis inlet to be preheated, so that preheated active coke is obtained, and preheated flue gas is discharged from the preheated flue gas outlet; preferably, the preheated flue gas is desorbed high-temperature flue gas.
7. The method according to claim 5 or 6, wherein in step S2, high-temperature flue gas enters the outside of the second heat exchange tube through the high-temperature flue gas inlet, so that the preheated active coke is desorbed, and the desorbed high-temperature flue gas is discharged through the high-temperature flue gas outlet; and/or
In step S3, cooling air enters the air cooling section through a cooling air inlet, is primarily cooled, and is discharged through a cooling air outlet, preferably, the cooling air is natural air; and/or
In step S4, the circulating cooling water enters the water cooling section through the cooling water inlet, is finally cooled, and is discharged through the cooling water outlet.
8. The method according to any one of claims 5 to 7, wherein in step S1, the active coke is granular active coke, preferably, the granular active coke has a three-dimensional particle size of 20mm or less; and/or
In step S2, the temperature of the analysis treatment is 450-500 ℃, and the time is 40-60 min.
9. The method according to any one of claims 5 to 8, wherein in step S2, the temperature of the high temperature flue gas at the high temperature flue gas inlet is 450 ℃ to 500 ℃, and the temperature of the high temperature flue gas at the high temperature flue gas outlet is 300 ℃ to 400 ℃; and/or
In step S1, the temperature of the preheated active coke is 150-200 ℃; and/or
In step S2, the temperature of the resolved active coke is 380-420 ℃; and/or
In step S3, the temperature of the primarily cooled active coke is 230-280 ℃ and/or
In step S4, the temperature of the finally cooled active coke is 80-120 ℃.
10. Use of the apparatus according to any one of claims 1-4 or the method according to any one of claims 5-9 in the desulfurization regeneration of activated coke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111346069.6A CN114260002A (en) | 2021-11-15 | 2021-11-15 | Active coke analysis device and application thereof |
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