CN211079063U - Semi-coke gas front desulfurization combined desulfurization device - Google Patents
Semi-coke gas front desulfurization combined desulfurization device Download PDFInfo
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Abstract
The utility model discloses a desulfurization combination formula desulphurization unit before blue charcoal coal gas, include: an impact reactor and a desulfurization tower; an air inlet of the impact reactor is connected with an input pipeline, and the input pipeline is used for inputting semi-coke gas to be treated; a liquid inlet of the impact reactor is used for introducing desulfurization liquid for pretreatment; the gas outlet of the impact reactor is communicated with the gas inlet of the desulfurizing tower; a packing layer, a liquid distributor and a fog drop catcher are sequentially arranged between the air inlet of the desulfurizing tower and the air outlet of the desulfurizing tower along the flowing direction of the semi-coke coal gas; the liquid inlet of the desulfurizing tower is communicated with the liquid distributor and is used for introducing the desulfurizing barren solution; the liquid outlet of the desulfurizing tower is used for leading out the desulfurizing rich liquid after the desulfurizing reaction; the gas outlet of the desulfurizing tower is connected with an output pipeline for leading out the desulfurized and purified semi-coke gas. The utility model discloses a desulphurization unit can solve aftertreatment device and corrode defects such as serious, running cost too high.
Description
Technical Field
The utility model belongs to the technical field of blue charcoal coal gas purification treatment, in particular to blue charcoal coal gas front desulfurization combination formula desulphurization unit.
Background
The semi-coke production technology is used as an organic component of the clean coal technology, and can realize high-efficiency clean utilization of coal resources and energy conservation; particularly, the Jurassic period coal is utilized, so that the problem of unbalanced coal resources for a long time is solved, a new way is found for the deep processing of abundant coal in a coal area, the Jurassic period coal is considered as an ideal product for upgrading and updating of the coal industry, and the Jurassic period coal is a project with remarkable economic benefit and good social benefit.
The semi-coke production belongs to low-temperature dry distillation, and is characterized by that under the condition of isolating air and oxygen gas the coal is heated to about 600 deg.C, and decomposed to produce tar, semi-coke and semi-coke gas. The tar can be used as diesel oil fraction and naphtha component for fuel industrial processing and raw materials of oil refineries; the semi-coke can be widely used in the industries of ferroalloy, calcium carbide, chemical fertilizer gas making and the like; the semi-coke gas is used for generating electricity, smelting metal magnesium, preparing methanol, synthesizing ammonia and other products. However, the semi-coke gas has high tar and sulfide content, low utilization rate and serious environmental pollution; especially, the sulfide in the semi-coke gas can seriously corrode gas transmission pipelines and equipment, and if the semi-coke gas is used as various chemical raw material gases (such as ammonia synthesis raw material gases), the sulfide often poisons a catalyst, increases the viscosity of a liquid solvent, influences the quality of products and the like.
At present, semi-coke coal gas is desulfurized after being combusted, although flue gas generated by combustion can be desulfurized by using various methods, the flue gas amount after being combusted is enlarged by 2-2.5 times compared with the raw gas amount, the scale of a desulfurizing device is enlarged, equipment is seriously corroded, the investment and operation cost of an enterprise are increased, and heavy economic burden is brought to the enterprise. Therefore, the significance of finding a semi-coke gas purification system which firstly desulfurizes semi-coke gas and then applies semi-coke gas is important.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a desulfurization combination formula desulphurization unit before blue charcoal coal gas to solve one or more technical problem that above-mentioned exists. The utility model discloses a desulphurization unit can solve aftertreatment device and corrode defects such as serious, running cost too high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a desulfurization combination formula desulphurization unit before blue charcoal coal gas, include: an impact reactor and a desulfurization tower;
the impact reactor is provided with an air inlet, an air outlet and a liquid inlet; the air inlet of the impact reactor is connected with an input pipeline, and the input pipeline is used for inputting semi-coke gas to be treated; the liquid inlet of the impact reactor is used for introducing desulfurization liquid for pretreatment; the desulfurizing tower is provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet; the gas outlet of the impact reactor is communicated with the gas inlet of the desulfurizing tower; a packing layer, a liquid distributor and a fog drop catcher are sequentially arranged between the air inlet of the desulfurizing tower and the air outlet of the desulfurizing tower along the flowing direction of the semi-coke coal gas; the liquid inlet of the desulfurizing tower is communicated with the liquid distributor and is used for introducing a desulfurizing barren solution; the liquid outlet of the desulfurizing tower is used for leading out the desulfurizing rich liquid after the desulfurizing reaction; and the gas outlet of the desulfurizing tower is connected with an output pipeline for leading out the desulfurized and purified semi-coke gas.
The utility model discloses a further improvement lies in, still includes: uniformly distributing pipes; the uniform distribution pipe is arranged in the desulfurizing tower, and an inlet of the uniform distribution pipe is communicated with an air outlet of the impact reactor.
The utility model is further improved in that the input pipeline is connected with the impact reactor through a flange; the output pipeline is connected with the desulfurizing tower through a flange.
The utility model discloses a further improvement lies in, still includes: a lean liquor conduit and a rich liquor conduit; the inlet of the rich liquid pipeline is communicated with the liquid outlet of the desulfurizing tower; an outlet of the barren liquor pipeline is communicated with the liquid distributor; and the other outlet of the barren liquor pipeline is communicated with a liquid inlet of the impact reactor.
The utility model discloses a further improvement lies in, still includes: a nozzle; the nozzle is arranged in the impact reactor; the nozzle is communicated with the lean solution pipeline.
The utility model discloses a further improvement lies in, the hydrojet direction of nozzle is opposite with the flow direction of blue charcoal coal gas.
The utility model discloses a further improvement lies in, still includes: a desulfurization solution regeneration system;
an inlet of the lean solution pipeline is communicated with a lean solution outlet of the doctor solution regeneration system;
the outlet of the rich liquid pipeline is communicated with the inlet of the desulfurization liquid regeneration system;
the desulfurization solution regeneration system is provided with a waste solution salt-rich outlet and is used for being connected with a waste solution salt-rich recovery system;
the desulfurization liquid regeneration system is provided with a sulfur recovery outlet and is used for being connected with a sulfur recovery system.
The utility model is further improved in that the number of the packing layers is multilayer; the number of the fog drop catcher is multiple.
The utility model is further improved in that the packing layer is provided with honeycomb regular grid type packing; the fog drop catcher adopts a baffle plate type structure.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a desulphurization unit, make up coal gas preprocessing device's striking reactor and desulfurizing tower in an organic whole ingeniously, install on desulfurizing tower inlet pipe, the torrent foam district that utilizes high-speed reverse striking to produce makes coal gas and doctor solution fully contact, recycle and carry out fully desulfurization reaction at the inside spatial position that rises of desulfurizing tower, the sulphide in the blue charcoal coal gas of desorption, not only solved the blue charcoal of industry and produced the environmental pollution problem that coal gas caused in the production process, still got rid of the comdenstion water in the blue charcoal coal gas, tar, the purity of blue charcoal coal gas has been improved, it is high-efficient to realize coal resources, clean utilization, energy-conservation, environmental protection.
The utility model discloses in, doctor solution spouts from the nozzle in the striking reactor, forms the foaminess inside and blue charcoal coal gas reverse contact of striking reactor, increases the area of contact with coal gas, makes the doctor solution glue and applies on the sulphide material in coal gas, increases the probability of the two contact, is convenient for take place chemical reaction desorption sulphide.
The utility model discloses in, the droplet catcher that sets up after the desulfurization is a plurality of, forms multistage entrapment droplet ability.
The utility model discloses a desulphurization unit finally reaches desulfurization efficiency more than 95%, removes tar, dust collection efficiency and reaches more than 99%.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic structural diagram of a semi-coke gas front desulfurization combined desulfurization device according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a process arrangement of a semi-coke gas front desulfurization combined desulfurization device according to an embodiment of the present invention;
in fig. 1 and 2, 1, an input duct; 2. an impact reactor; 3. uniformly distributing pipes; 4. a desulfurizing tower; 5. a filler layer; 6. a liquid distributor; 7. a fog drop catcher; 8. an output pipe; 9. a lean liquor conduit; 10. a rich liquid pipeline.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following description, with reference to the drawings in the embodiments of the present invention, clearly and completely describes the technical solution in the embodiments of the present invention; obviously, the described embodiments are some of the embodiments of the present invention. Based on the embodiments disclosed in the present invention, other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Referring to fig. 1, a combined high-efficiency desulfurization device for semi-coke gas front desulfurization according to an embodiment of the present invention includes: the device comprises an impact reactor 2, a desulfurizing tower 4, a packing layer 5 in the desulfurizing tower, a liquid distributor 6 of desulfurizing liquid and a fog drop catcher 7 in the desulfurizing tower; the part, the semi-coke gas input pipeline 1, the semi-coke gas output pipeline 8, the lean solution pipeline 9 of the desulfurization solution and the rich solution pipeline 10 form a complete semi-coke gas desulfurization reaction system.
The packing layer 5 is made of novel honeycomb structured grid type packing, and the grid type packing has the characteristics of regular structure and arrangement, large effective mass transfer area, small resistance, low resistance and high efficiency. The grid packing material can be made of metal or PP plastic, the shape of the grid packing material is hexagonal honeycomb, and the width of the grid packing material is formed by assembling according to the sizes of the tower diameter and the manhole. The height of each disc of packing is determined by the diameter of the tower, and one disc is 80-100 mm. The arrangement direction of the grid fillers between the upper layer and the lower layer rotates 45 degrees. Because the grid plate of the grid packing is vertical to the cross section of the tower and is parallel to the direction of the air flow and the liquid flow, the upper layer and the lower layer rotate at 45 degrees, the air flow and the liquid flow in the tower rotate reversely, and the air flow and the liquid flow are in rotational flow flowing contact. The liquid descends along the surface of the filler by gravity and contacts with the ascending gas, the gas flows downwards in a film shape on the surface of the plastic or metal plate, the gas flows from bottom to top as a continuous phase and contacts with the liquid film for mass transfer, and drop-shaped or film-shaped contact is formed between the gas and the liquid. The grid packing substantially eliminates the wall flow phenomenon common to both random packing and corrugated packing. Because the distance between the grid packing plates is large, the surfaces of the plates are very smooth, the resistance of gas rising and liquid falling is greatly reduced, the gas and the liquid have fixed channels, and the fluid is continuously washed and contacted between the plates, so that the dust-containing gas and the liquid can not be stagnated, deposited and blocked on the surfaces of the packing. Therefore, the grid packing is a novel structured packing which has high efficiency, large flux, reduced pressure and no tower blockage. Under normal operating conditions, the pressure drop is only 20-30% of that of the cascade ring packing and pall ring packing, the flux is 80% higher than that of a plate tower, and the flux is 50% higher than that of the pall ring.
The droplet catcher 7 is of a baffle plate type structure and mainly comprises a plate and a supporting device, wherein the plate is usually made of two main materials, namely high polymer materials (such as polypropylene PP, FRP and the like) or stainless steel (such as 316L, 317L and the like).
The desulfurization solution regeneration system adopts a mature jet regeneration groove type device, the desulfurization rich solution is jetted into the regeneration groove through the jet at a high speed under the action of the rich solution pump and is contacted with a large amount of air introduced from the air suction chamber of the jet, the oxygen in the air and the desulfurization solution generate oxidation reaction to separate out sulfur, and the regenerated desulfurization lean solution flows into the circulation groove for recycling. The sulfur foam on the liquid in the regeneration tank is filtered by a filter or a sulfur melting kettle to obtain sulfur.
Preferably, the input pipe 1 of the desulfurization device is connected to the inlet flange at the upper part of the impact reactor 2, and the output pipe 8 is connected to the outlet flange of the desulfurization tower 4 of the desulfurization device.
Preferably, in the desulfurization device, the desulfurization barren solution which reacts with the semi-coke gas to remove sulfide enters the device from a barren solution pipeline 9 in two ways; one path of the desulfurization solution enters a liquid distributor 6 in the desulfurizing tower from a desulfurization solution input pipeline at the top of the desulfurizing tower 4, and the desulfurization solution uniformly flows out of the liquid distributor 6, flows onto a packing layer 5 and is fully and uniformly contacted with the semi-coke gas in the tower, so that the reaction is carried out, and the sulfide of the semi-coke gas is removed; the other path is connected to a desulfurizing liquid inlet pipeline at the middle upper part of the impact reactor 2, is sprayed out from a nozzle in the impact reactor, is in reverse contact with semi-coke coal gas in the impact reactor to form a foam shape, increases the contact area with the coal gas, enables the desulfurizing liquid to be adhered to sulfide substances in the coal gas, increases the contact probability of the desulfurizing liquid and the coal gas, and is convenient for chemical reaction to remove sulfide.
Referring to fig. 2, preferably, the desulfurization solution that has reacted with the coal gas in the desulfurization device and is rich in the reactant, i.e., the desulfurization rich solution, flows out from the bottom pipe of the desulfurization tower into the rich solution pipe 10, and then flows into the subsequent desulfurization solution recovery system, and the desulfurization barren solution treated by the recovery system enters the desulfurization device again through the barren solution pipe 9 of the desulfurization device for recycling. In the desulfurization solution regeneration system, an outlet is connected with an injection device at the top of a regeneration tank through a regeneration pump, and a solution outlet of the regeneration tank is connected with an inlet of a lean solution tank.
The desulfurization device of the above embodiment of the utility model is a high-efficiency combined device integrating the processes of cooling, oil removal, dust removal and desulfurization of semi-coke gas. The utility model provides a do not have suitable desulphurization unit who is used for blue charcoal coal gas specially, solved blue charcoal coal gas before the use inside impurity that exists many (tar and dust), sulphide corruption scheduling problem. The conventional chemical packed tower is combined with an impact reactor in front of the tower, so that coal gas is fully contacted with desulfurization liquid, and then the space in the desulfurization tower is utilized to allow enough time for chemical reaction to remove sulfide. And the fog drop catcher is combined and installed at the top of the desulfurizing tower, so that the process equipment arrangement is simplified, the manufacturing and installation of the single catcher are saved, and the position and the cost are saved. The embodiment of the utility model provides a concrete beneficial effect as follows: 1. realizing the integration of a high-efficiency semi-coke gas desulfurization system; 2. high-efficiency desulfurization, wherein the desulfurization efficiency is over 95 percent; 3. the process equipment is small in layout, simple in daily maintenance and low in running cost.
The utility model discloses high-efficient desulphurization unit of desulfurization combination formula before blue charcoal coal gas, including coal gas pretreatment systems, desulfurizing tower circulation system in proper order. The coal gas pretreatment system comprises a cooler and an impact reactor which are sequentially connected, an inlet of the coal gas pretreatment system is connected with a coal gas input pipeline, an outlet of the coal gas pretreatment system is connected with a desulfurizing tower, a coal gas outlet of the desulfurizing circulation system is connected with a coal gas output pipeline, and a circulating liquid outlet at the bottom of the desulfurizing circulation system is connected with a sulfur recovery system. The desulfurizing tower is desulfurization packed tower, and the desulfurizing tower is provided with the alkali lye entry, and this alkali lye entry linkage has alkali lye circulation system, and this alkali lye circulation system includes alkali lye configuration device and barren solution groove, and the alkali lye is made to the barren solution groove after the configuration in alkali lye configuration device, and the alkali lye export of barren solution groove links to each other with the alkali lye entry of desulfurizing tower for provide alkali lye for the desulfurizing tower. The desulfurization device, a solution circulating system and a sulfur recovery system which are matched with each other and a waste liquid salt-rich recovery system form a complete coal gas desulfurization system.
The embodiment of the utility model provides a high-efficient desulphurization unit of blue charcoal gas front desulfurization combination formula is an important combination formula equipment among blue charcoal gas desulfurization system, include: the device comprises an impact reactor, a desulfurizing tower, a fog drop catcher and a desulfurizing liquid circulating pipeline system.
The desulfurization tower 4 may be a spray reaction packed tower.
The impact reactor 2 is a coal gas impact reactor, and can be a hedging reactor.
The high-efficiency desulfurization device comprises an impact reactor 2, a uniform distribution pipe 3 of a coal gas inlet, a desulfurization tower 4, a packing layer 5, a desulfurization liquid inlet and outlet pipeline, an internal supporting piece, a liquid distributor 6, a fog drip catcher 7 and the like which are sequentially communicated.
The semi-coke gas is connected with a gas input pipeline from an inlet of the impact reactor, a gas outlet of the desulfurization device is connected with a gas output pipeline from an outlet of the fog drop catcher, the desulfurization circulating liquid in the desulfurization device is prepared from the desulfurization circulating liquid of the whole desulfurization system, an outlet of the barren solution groove is connected to the tower, and the rich solution generated at the lower part of the desulfurization tower is discharged into the rich solution groove of the whole desulfurization system.
The appearance of the coal gas impact reactor is represented by an L-shaped equipment part which is vertically arranged, has an upper vertical part and a lower vertical part with bent pipes, and has flanges at two ends for being conveniently connected with a coal gas main pipe and a desulfurizing tower.
The main desulfurization equipment is a spray reaction packed tower, a coal gas impact reactor and a fog drop catcher, wherein the coal gas impact reactor is combined on an inlet pipeline of a desulfurization tower, and the fog drop catcher is arranged at the upper part inside the tower. Before entering the desulfurizing tower, coal gas must enter the impact reactor, and before exiting the desulfurizing tower, the coal gas must pass through the high-efficiency fog drip catcher to exit. The arrangement is efficient and flexible, the process requirements can be met under general conditions, and if the fog drops (namely humidity) in the coal gas are particularly small due to the process requirements, a fog drop catcher can be added after desulfurization to form secondary fog drop catching energy.
To sum up, the embodiment of the utility model provides a semi coke gas front desulphurization combined type high-efficiency desulphurization device, which comprises a gas input pipeline, a hedging reactor, a high-efficiency desulphurization tower and a fog drop catcher; the coal gas input pipeline is connected with the inlet of the hedging reactor, and the coal gas outlet of the hedging reactor is connected with the inlet of the desulfurizing tower; the fog drop catcher is arranged in the desulfurization tower, the outlet of the fog drop catcher and the outlet in the desulfurization tower are the same, and the coal gas is conveyed back to the coal gas main pipe again to enter the subsequent process. Adopt the utility model discloses a device can be effectual carries out high-efficient dust removal desulfurization to the coal gas that blue charcoal production produced. Adopt the utility model discloses can high-efficiently get rid of various sulfides in blue charcoal coal gas, improve the quality of blue charcoal coal gas, make things convenient for follow-up technology to use. The device of the utility model is a desulfurization mode before blue charcoal coal gas, and has the advantages of less investment, good stability, simple routine maintenance, low operation cost and the like.
The above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify or equally replace the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a blue charcoal gas front desulfurization combination formula desulphurization unit which characterized in that includes: an impact reactor (2) and a desulfurizing tower (4);
the impact reactor (2) is provided with an air inlet, an air outlet and a liquid inlet; an air inlet of the impact reactor (2) is connected with an input pipeline (1), and the input pipeline (1) is used for inputting semi-coke gas to be treated; a liquid inlet of the impact reactor (2) is used for introducing desulfurization liquid for pretreatment;
the desulfurizing tower (4) is provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet; the gas outlet of the impact reactor (2) is communicated with the gas inlet of the desulfurizing tower (4); a packing layer (5), a liquid distributor (6) and a fog drop catcher (7) are sequentially arranged between the air inlet of the desulfurizing tower (4) and the air outlet of the desulfurizing tower (4) along the circulation direction of the semi-coke coal gas; a liquid inlet of the desulfurizing tower (4) is communicated with the liquid distributor (6) and is used for introducing a desulfurizing barren solution; the liquid outlet of the desulfurizing tower (4) is used for leading out the desulfurizing rich liquid after the desulfurizing reaction; and the gas outlet of the desulfurizing tower (4) is connected with an output pipeline (8) for leading out the desulfurized and purified semi-coke gas.
2. The semi-coke gas front desulfurization combined type desulfurization device according to claim 1, further comprising: a uniform distribution pipe (3);
the uniform distribution pipe (3) is arranged in the desulfurizing tower (4), and the inlet of the uniform distribution pipe (3) is communicated with the gas outlet of the impact reactor (2).
3. The semi-coke gas front desulfurization combined desulfurization device according to claim 1, characterized in that the input pipeline (1) is connected with the impact reactor (2) through a flange;
the output pipeline (8) is connected with the desulfurizing tower (4) through a flange.
4. The semi-coke gas front desulfurization combined type desulfurization device according to claim 1, further comprising: a lean liquid line (9) and a rich liquid line (10);
the inlet of the rich liquid pipeline (10) is communicated with the liquid outlet of the desulfurizing tower (4);
an outlet of the barren liquor pipeline (9) is communicated with the liquid distributor (6); the other outlet of the barren liquor pipeline (9) is communicated with the liquid inlet of the impact reactor (2).
5. The semi-coke gas front desulfurization combined type desulfurization device according to claim 4, further comprising: a nozzle;
the nozzles are arranged in the impact reactor (2); the nozzle is communicated with the lean solution pipeline (9).
6. The front desulfurization combined desulfurization device for semi-coke gas as claimed in claim 5, characterized in that the spraying direction of the nozzle is opposite to the flowing direction of the semi-coke gas in the impact reactor (2).
7. The semi-coke gas front desulfurization combined type desulfurization device according to claim 4, further comprising: a desulfurization solution regeneration system;
an inlet of the lean solution pipeline (9) is communicated with a lean solution outlet of the doctor solution regeneration system;
the outlet of the rich liquid pipeline (10) is communicated with the inlet of the desulfurization liquid regeneration system;
the desulfurization solution regeneration system is provided with a waste solution salt-rich outlet and is used for being connected with a waste solution salt-rich recovery system;
the desulfurization liquid regeneration system is provided with a sulfur recovery outlet and is used for being connected with a sulfur recovery system.
8. The semi-coke gas front desulphurization combined desulphurization device according to claim 1, wherein the number of the packing layers (5) is multi-layer; the number of the fog drop catchers (7) is multiple.
9. The semi-coke gas front desulphurization combined desulphurization device according to claim 1, wherein the impact reactor (2) is a hedging reactor.
10. The semi-coke coal gas front desulfurization combined type desulfurization device according to claim 1, characterized in that the packing layer (5) is provided with honeycomb structured grid-like packing;
the fog drop catcher (7) adopts a baffle plate type structure.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113403114A (en) * | 2021-05-14 | 2021-09-17 | 中冶焦耐(大连)工程技术有限公司 | Desulfurizing tower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113403114A (en) * | 2021-05-14 | 2021-09-17 | 中冶焦耐(大连)工程技术有限公司 | Desulfurizing tower |
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