CN104815595A - Graphite concentrated hydrochloric acid production absorption tower - Google Patents
Graphite concentrated hydrochloric acid production absorption tower Download PDFInfo
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- CN104815595A CN104815595A CN201510201879.0A CN201510201879A CN104815595A CN 104815595 A CN104815595 A CN 104815595A CN 201510201879 A CN201510201879 A CN 201510201879A CN 104815595 A CN104815595 A CN 104815595A
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- graphite
- hydrochloric acid
- cylindrical shell
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Abstract
A graphite concentrated hydrochloric acid production absorption tower comprises a cylinder. A concentrated hydrochloric acid inlet is formed in the upper portion of the cylinder, and a diluted hydrochloric acid steam inlet is formed in the lower portion. A plurality of support plates are fixedly connected into the cylinder, and detection holes are formed at the corresponding positions on the outside of the cylinder. A graphite upper seal head is arranged above the cylinder and is in seal fixed connection with the cylinder. A graphite lower seal head is arranged below the cylinder and is in seal fixed connection with the cylinder. Graphite packing of certain height is stacked above the support plates respectively and is disposed in the cylinder to divide the absorption tower into a plurality of graphite packing sections. A liquid distributor is arranged on the upper portion of the graphite packing section at the top end and is fixedly connected with the cylinder. A liquid re-distributor is arranged on the upper portions of the other graphite packing sections respectively and is fixedly connected with the cylinder. A liquid initial distributor is arranged at the upper end of the liquid distributor and is arranged in the cylinder and fixedly connected with the cylinder. The absorption tower has the advantages of being high in absorption efficiency, low in fabrication cost, high in anti-corrosion capacity and low in operation cost.
Description
Technical field
The invention belongs to and belong to technical field of chemical, be specifically related to the efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid.
Background technology
Concentrated hydrochloric acid Analytic Tower is the common equipment of high-purity hydrochloric acid or high-quality PVC industry; Graphite material, with its distinctive decay resistance, is specially adapted to the corrosion protection equipment making the chlor-alkali industries such as hydrochloric acid.Traditional graphite Analytic Tower uses graphite material to make tower internals.At the bottom of the intensity that graphite material is intrinsic, the defect such as fragility is large; Cannot be processed into frivolous, the tower internals structure bulky of the graphite-made resolving hydrochloric acid tower made, taking inner space, greatly, particularly to take Section Space large; Graphite material is generally only applicable to be processed into Raschig ring in addition.The mass-transfer efficiency of Raschig ring is low, packing factor large, causes graphite Analytic Tower general all than the metal tower diameter large 40 ~ 60% of identical performance.On the other hand due to the enlarge-effect of packed tower, cause vicious circle, namely tower diameter is larger, and mass-transfer efficiency is lower, and energy resource consumption rate is higher, and product quality is poorer.So traditional, graphite-made concentrated hydrochloric acid Analytic Tower exists at the bottom of analyzing efficiency, operating cost is high, the moisture shortcoming such as many of product hydrogen chloride.
Summary of the invention
The present invention is directed to the defect that prior art exists, aim to provide that a kind of analyzing efficiency is high, low cost of manufacture, corrosion resistant ability are strong, run the efficient Analytic Tower of graphite-made concentrated hydrochloric acid at the bottom of rate.
The present invention realizes especially by following technical scheme:
The efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid, comprise cylindrical shell, the top of cylindrical shell is provided with concentrated hydrochloric acid entrance, and concentrated hydrochloric acid entrance top is provided with graphite upper cover, and the top of graphite upper cover is provided with hydrogen chloride outlet, and described graphite upper cover and cylindrical shell seal and be connected;
The position that inner barrel is corresponding to concentrated hydrochloric acid entrance is provided with liquid initial distributor, is connected with cylindrical shell, and be provided with liquid distribution trough below liquid initial distributor, liquid distribution trough is placed in cylindrical shell, and is connected with cylindrical shell.
Be connected in cylindrical shell some gripper shoes, loose graphite packing of piling certain altitude respectively above fagging, graphite packing is placed in cylindrical shell, Analytic Tower is divided into some packing section, except the graphite packing of the top, graphite packing top is respectively equipped with liquid re-distributor, and liquid re-distributor is placed in cylindrical shell, and is connected with cylindrical shell.
The outer position corresponding to bottom support plate of cylindrical shell is provided with exploration hole, and cylinder body bottom is fixed with graphite low head, and the bottom of graphite low head is provided with watery hydrochloric acid outlet, and position relative with exploration hole on cylindrical shell is provided with watery hydrochloric acid steam inlet.
Described graphite packing is on the tube wall of graphite Raschig ring, process some equally distributed apertures, and aperture is 6 ~ 12mm.
Described gripper shoe is that the grizzly bar of grid plate structure is processed into broached-tooth design, and space width is 0.8 times of filler diameter, and sawtooth height is 1.0 times of filler diameter.
Described liquid distribution trough is porous type distributor, and its riser is polytetrafluoroethylene (PTFE) material, and separatory dish is graphite material, and described riser and described separatory dish adopt built-in type to seal fixing mechanism.
Described some liquid re-distributors are overflow type distributor, the overflow pipe of described liquid re-distributor is polytetrafluoroethylene (PTFE) material, the seal cup of described liquid re-distributor is graphite material, and described overflow pipe and described seal cup adopt " built-in type sealing fixing mechanism ".
Described liquid initial distributor is downcomer type liquid distribution trough, and graphite material tower internals of the present invention all uses the epoxy resin impregnated processing and fabricating of modified high-strength degree.
Beneficial effect of the present invention is:
1) by the further processing to graphite Raschig ring, the tube wall of Raschig ring is processed some equally distributed apertures, and aperture is 6 ~ 12mm, produces a kind of novel graphite filler.Increase the porosity of filler, effectively reduce packing factor thus established the basis of effective reduction Analytic Tower diameter.
2) novel graphite filling-material structure design; Improve the flow regime of medium at filling surface, make Raschig ring surfaces externally and internally can be through, medium can effectively contact, and improves the mass-transfer efficiency of filler; It is a kind of random packing efficiently.The utilization of novel graphite filler, improves analyzing efficiency, has established the basis of efficient parsing.
3) change traditional packing support plate structure, the grizzly bar of former grid plate structure is processed into broached-tooth design; Space width is 0.8 times of filler diameter; Sawtooth height is 1.0 times of filler diameter.The usefulness of this structure is: the cross section that filler contacts with gripper shoe is the minimum position of packed tower cross section voidage, is also the place that liquid flooding the most easily occurs.This structure, by the similar plane contact form between filler and gripper shoe, changes into three-dimensional contact form, effectively raises tower inner passage section voidage.The diameter of the efficient Analytic Tower of concentrated hydrochloric acid is effectively reduced.
4) broached-tooth design on screen, has forced the arrangement form of filler on screen, avoids the linear contact lay of filler and screen bar parallel direction.It is one of beneficial effect improving tower inner passage section voidage.
5) adopt the epoxy resin impregnated graphite material of modified high-strength degree, increase the mechanical strength of Graphite Tower internals, change the manufacture method of traditional liquid distributor and redistributor, improve gas-liquid distribution efficiency.Tower internals is more frivolous, and tower inner passage section voidage is larger.
6) the main body strength structural components such as separatory dish of liquid distribution trough, liquid re-distributor, liquid initial distributor, adopts graphite material to make.The geomery such as riser, overflow pipe structure member, adopts polytetrafluoroethylene (PTFE) material to make; Between graphite material parts and polytetrafluoroethylene (PTFE) multimaterial component, adopt " built-in type sealing fixing mechanism ".Solve the problem that is tightly connected between polytetrafluoroethylene (PTFE) and graphite material.Further enhance the frivolous effect of tower internals.
The efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid of the present invention, by improving the mass-transfer efficiency of filler; The frivolous effect of strengthening tower internals; The liquid distribution device that project organization is compact, efficiency is high; Change the modes such as the structure of packing support plate; Achieve: the diameter effectively reducing concentrated hydrochloric acid Analytic Tower; Reduce the height that concentrated hydrochloric acid is resolved; Tower inner passage section voidage is high; The object that analyzing efficiency is high.Be that a kind of analyzing efficiency is high, low cost of manufacture, corrosion resistant ability strong, run the little efficient Analytic Tower of graphite-made concentrated hydrochloric acid of rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the efficient Analytic Tower of a kind of graphite-made of the present invention concentrated hydrochloric acid;
Indicate in accompanying drawing and illustrate: 1 watery hydrochloric acid outlet, 2 graphite low heads, 3 exploration holes, 4 gripper shoes, 5 graphite packings, 6 cylindrical shells, 7 liquid re-distributors, 8 liquid distribution troughs, 9 concentrated hydrochloric acid entrances, 10 graphite upper covers, 11 hydrogen chloride outlets, 12 liquid initial distributors, 13 riseies, 14 separatory dishes, 15 overflow pipes, 16 seal cups, 17 watery hydrochloric acid steam inlets.
Detailed description of the invention
Below in conjunction with accompanying drawing, explanation is further explained to the efficient Analytic Tower of graphite-made concentrated hydrochloric acid of the present invention.
As shown in Figure 1, the efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid of the present invention, comprise cylindrical shell 6, the top of cylindrical shell 6 is provided with concentrated hydrochloric acid entrance 9, graphite upper cover 10 is provided with above concentrated hydrochloric acid entrance 9, the top of graphite upper cover 10 is provided with hydrogen chloride outlet 11, and described graphite upper cover 10 seals with cylindrical shell 6 and is connected;
The inner position corresponding to concentrated hydrochloric acid entrance 9 of cylindrical shell 6 is provided with liquid initial distributor 12, and be connected with cylindrical shell 6, be provided with liquid distribution trough 8 below liquid initial distributor 12, liquid distribution trough 8 is placed in cylindrical shell 6, and is connected with cylindrical shell 6.Liquid distribution trough 8 is porous type distributor; The riser 13 of liquid distribution trough 8 is polytetrafluoroethylene (PTFE) material, and the separatory dish 14 of liquid distribution trough 8 is graphite material, and riser 13 and described separatory dish 14 adopt built-in type to seal fixing mechanism.Liquid initial distributor 12 is downcomer type liquid distribution trough.
Be connected in cylindrical shell 6 some gripper shoes 4, loose graphite packing 5 of piling certain altitude respectively above fagging 4, graphite packing 5 is placed in cylindrical shell 6, Analytic Tower is divided into some packing section, except the top graphite packing 5, graphite packing 5 top is respectively equipped with liquid re-distributor 7, and liquid re-distributor 7 is placed in cylindrical shell 6, and is connected with cylindrical shell 6.Gripper shoe 4 is that the grizzly bar of grid plate structure is processed into broached-tooth design, and space width is 0.8 times of filler diameter, and sawtooth height is 1.0 times of filler diameter.Graphite packing 5 is on the tube wall of graphite Raschig ring, process some equally distributed apertures, and aperture is 6 ~ 12mm.Liquid re-distributor 7 is overflow type distributor; The overflow pipe 15 of liquid re-distributor 7 is polytetrafluoroethylene (PTFE) material, and the seal cup 16 of liquid re-distributor is graphite material, and overflow pipe 15 and described seal cup 16 adopt built-in type to seal fixing mechanism.
The outer position corresponding to bottom support plate 4 of cylindrical shell 6 is provided with exploration hole 3, is fixed with graphite low head 2 bottom cylindrical shell 6, and the bottom of graphite low head 2 is provided with watery hydrochloric acid outlet 1, and position relative with exploration hole 3 on cylindrical shell 6 is provided with watery hydrochloric acid steam inlet 17.
This Analytic Tower graphite material tower internals all uses the epoxy resin impregnated processing and fabricating of modified high-strength degree.
The efficient Analytic Tower day output of this graphite-made concentrated hydrochloric acid 20 tons, graphite packing 5 is two sections.Operation principle is: the principle of " when the actual dividing potential drop in gas phase solute is lower than liquid equilibrium solute dividing potential drop, solute is shifted to gas phase by liquid phase ".
Operation is carried out at ambient pressure.The industrial concentrated hydrochloric acid of to be resolved 31% ~ 35% is preheating to technological requirement temperature; By concentrated hydrochloric acid entrance 9, enter the efficient Analytic Tower top of graphite-made concentrated hydrochloric acid, under gravity, from top to bottom through liquid initial distributor 12, liquid distribution trough 8; Even sprinkle is above first paragraph graphite packing 5, and dirty along the space of graphite packing 5, through first paragraph gripper shoe 4, enters liquid re-distributor 4 and again converges.By the even sprinkle of overflow pipe 15 above second segment graphite packing 5, and dirty along the space of graphite packing 5, through second segment gripper shoe 4, arrive graphite low head 2.
Service media is by the watery hydrochloric acid steam of 19% ~ 21% after " reboiler " heating simultaneously.By watery hydrochloric acid steam inlet 17, enter bottom the efficient Analytic Tower of graphite-made concentrated hydrochloric acid, at the bottom of tower, reverse flow uniform rises.In this operating process, gas-liquid two-phase contacts with each other through the surface of graphite packing, carries out the transmission of heat and quality.Hydrogen chloride gas is stripping from hydrochloric acid solution, rises and arrives graphite upper cover 10.The hydrogen chloride gas parsed, exports 11 by hydrogen chloride and discharges.In this process, the concentration of concentrated hydrochloric acid reduces gradually, becomes the watery hydrochloric acid of 19% ~ 21% simultaneously, exports 1 discharge by watery hydrochloric acid.
The present embodiment graphite packing structural design improves the flow regime of medium at filling surface, makes Raschig ring surfaces externally and internally can be through, and medium can effectively contact, and improves the mass-transfer efficiency of filler; It is a kind of random packing efficiently.The utilization of novel graphite filler, improves analyzing efficiency, has established the basis that the present embodiment is efficiently resolved.
The efficient Analytic Tower of the present embodiment graphite-made concentrated hydrochloric acid, changes traditional packing support plate structure, the grizzly bar of former grid plate structure is processed into broached-tooth design; Space width is 40mm; Sawtooth height is 50mm.The usefulness of this structure is: the cross section that filler contacts with gripper shoe is the minimum position of packed tower cross section voidage, is also the place that liquid flooding the most easily occurs.This structure, by the similar plane contact form between filler and gripper shoe, changes into three-dimensional contact form.Conventional structure designs, the cross section that filler contacts with gripper shoe, solid space height < 3mm.The efficient Analytic Tower of the present embodiment graphite-made concentrated hydrochloric acid, the cross section that filler contacts with gripper shoe, solid space height is about 50mm.When filler volume is substantially the same, solid space height is larger, and space is also more.Thus effectively raise the present embodiment tower inner passage section voidage.Still technological requirement can be met after making the reduced of the efficient Analytic Tower of concentrated hydrochloric acid.
The efficient Analytic Tower of the present embodiment graphite-made concentrated hydrochloric acid, the broached-tooth design on screen, has forced the arrangement form of filler on screen, avoids the linear contact lay of filler and screen bar parallel direction.It is one of beneficial effect improving tower inner passage section voidage.
The efficient Analytic Tower of the present embodiment graphite-made concentrated hydrochloric acid, adopts the epoxy resin impregnated graphite material of modified high-strength degree, and increase the mechanical strength of Graphite Tower internals, modified epoxy resin impregnated graphite material allowable stress increases by 4 times.Due to the increase of the strength of materials, tower internals is more frivolous, and tower inner passage section voidage is larger.Same reason, design, the manufacturing structure of liquid distribution trough and redistributor are just more reasonable, efficient, improve gas-liquid distribution efficiency.
The efficient Analytic Tower of the present embodiment graphite-made concentrated hydrochloric acid, the main body strength structural components such as the separatory dish of liquid distribution trough, liquid re-distributor, liquid initial distributor, adopt graphite material to make.The geomery such as riser, overflow pipe structure member, adopts polytetrafluoroethylene (PTFE) material to make; Between graphite material parts and polytetrafluoroethylene (PTFE) multimaterial component, adopt " built-in type sealing fixing mechanism ".Solve the problem that is tightly connected between polytetrafluoroethylene (PTFE) and graphite material.Further enhance the frivolous effect of tower internals.
The efficient Analytic Tower of the present embodiment graphite-made concentrated hydrochloric acid, by improving the mass-transfer efficiency of filler; The frivolous effect of strengthening tower internals; The liquid distribution device that project organization is compact, efficiency is high; Change the modes such as the structure of packing support plate; Achieve: the diameter effectively reducing concentrated hydrochloric acid Analytic Tower; Reduce the height that concentrated hydrochloric acid is resolved; Tower inner passage section voidage is high; The object that analyzing efficiency is high.Contrast traditional design further illustrates, the efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid of the present invention, is that a kind of analyzing efficiency is high, low cost of manufacture, corrosion resistant ability strong, runs the little efficient Analytic Tower of graphite-made concentrated hydrochloric acid of rate.
Claims (6)
1. the efficient Analytic Tower of graphite-made concentrated hydrochloric acid, comprise cylindrical shell, it is characterized in that: the top of described cylindrical shell (6) is provided with concentrated hydrochloric acid entrance (9), concentrated hydrochloric acid entrance (9) top is provided with graphite upper cover (10), the top of graphite upper cover (10) is provided with hydrogen chloride outlet (11), and described graphite upper cover (10) and cylindrical shell (6) seal and be connected;
Described cylindrical shell (6) is inner is provided with liquid initial distributor (12) with the corresponding position of concentrated hydrochloric acid entrance (9), be connected with cylindrical shell (6), liquid initial distributor (12) below is provided with liquid distribution trough (8), liquid distribution trough (8) is placed in cylindrical shell (6), and is connected with cylindrical shell (6);
Be connected in described cylindrical shell (6) some gripper shoes (4), fagging (4) top is loose graphite packing (5) of piling certain altitude respectively, graphite packing (5) is placed in cylindrical shell (6), Analytic Tower is divided into some packing section, except graphite packing topmost (5), graphite packing (5) top is respectively equipped with liquid re-distributor (7), liquid re-distributor (7) is placed in cylindrical shell (6), and is connected with cylindrical shell (6);
Corresponding position is provided with exploration hole (3) to described cylindrical shell (6) with bottom support plate (4) outward, cylindrical shell (6) bottom is fixed with graphite low head (2), the bottom of graphite low head (2) is provided with watery hydrochloric acid outlet (1), and the upper position relative with exploration hole (3) of staving (6) is provided with watery hydrochloric acid steam inlet (17).
2. the efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid according to claim 1, is characterized in that: described graphite packing (5) is on the tube wall of graphite Raschig ring, process some equally distributed apertures, and aperture is 6 ~ 12mm.
3. the efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid according to claim 1, it is characterized in that: described gripper shoe (4) is that the grizzly bar of grid plate structure is processed into broached-tooth design, space width is 0.8 times of filler diameter, and sawtooth height is 1.0 times of filler diameter.
4. the efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid according to claim 1, it is characterized in that: described liquid distribution trough (8) is porous type distributor, its riser (13) is polytetrafluoroethylene (PTFE) material, separatory dish (14) is graphite material, and described riser (13) and described separatory dish (14) adopt built-in type to seal fixing mechanism.
5. the efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid according to claim 1, it is characterized in that: described some liquid re-distributors (7) are overflow type distributor, the overflow pipe (15) of described liquid re-distributor (7) is polytetrafluoroethylene (PTFE) material, the seal cup (16) of described liquid re-distributor is graphite material, and described overflow pipe (15) and described seal cup (16) adopt built-in type to seal fixing mechanism.
6. the efficient Analytic Tower of a kind of graphite-made concentrated hydrochloric acid according to claim 1, is characterized in that: described liquid initial distributor (12) is downcomer type liquid distribution trough.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510201879.0A CN104815595A (en) | 2015-04-24 | 2015-04-24 | Graphite concentrated hydrochloric acid production absorption tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201879.0A CN104815595A (en) | 2015-04-24 | 2015-04-24 | Graphite concentrated hydrochloric acid production absorption tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117138714A (en) * | 2023-10-31 | 2023-12-01 | 南通华耐特石墨设备有限公司 | Reinforced sealing type graphite tower |
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2015
- 2015-04-24 CN CN201510201879.0A patent/CN104815595A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117138714A (en) * | 2023-10-31 | 2023-12-01 | 南通华耐特石墨设备有限公司 | Reinforced sealing type graphite tower |
| CN117138714B (en) * | 2023-10-31 | 2024-04-19 | 南通华耐特石墨设备有限公司 | Reinforced sealing type graphite tower |
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Application publication date: 20150805 |