Title of invention: Hydrocarbon recovery equipment
Technical field
[0001]
　The present disclosure relates to a hydrocarbon recovery facility.
Background technology
[0002]
　Patent Document 1 describes that in order to treat the hydrocarbon contained in the produced gas obtained by gasifying coal, the hydrocarbon is precipitated in a washing tower and the precipitated hydrocarbon is removed by a strainer. There is. Since the hydrocarbon removed by the strainer is a solid substance having a size of about 5 mm to an egg size, it is pulverized, dissolved in an organic solvent after pulverization, and burned in a gasification furnace or an off-gas combustion furnace.
Prior art literature
Patent documents
[0003]
Patent Document 1: Japanese Patent No. 4107869
Outline of the invention
Problems to be solved by the invention
[0004]
　However, the system of Patent Document 1 requires equipment for crushing solid hydrocarbons, and has a problem that the cost of the hydrocarbon processing equipment is high. There is also a problem that it is difficult to handle solid hydrocarbons.
[0005]
　In view of the above circumstances, at least one embodiment of the present disclosure is an object of providing a hydrocarbon recovery facility capable of continuously recovering hydrocarbons in a gas at low cost.
Means to solve problems
[0006]
　The hydrocarbon recovery facility according to at least one embodiment of the present invention includes a water washing tower in which a gas and water are brought into contact with each other to precipitate hydrocarbons contained in the gas in water, and one of water from water mixed with hydrocarbons. It was prepared with an auto strainer that continuously removes hydrocarbons together with the part, an oil-water mixer that prepares an oil-water mixture by mixing the hydrocarbons removed by the auto-strainer, water, and an organic solvent, and an oil-water mixer. It is provided with an oil-water separator that separates the oil-water mixture into an oil phase and an aqueous phase.
[0007]
　According to this configuration, water containing hydrocarbons is continuously removed by an autostrainer, and the removed hydrocarbons and water are separated into an oil phase containing hydrocarbons and an aqueous phase by an oil-water mixer and an oil-water separator. Therefore, hydrocarbons in the gas can be continuously recovered at low cost.
[0008]
　In some embodiments, the oil-water mixer may include a stirrer. According to this configuration, the dissolution of hydrocarbons in the organic solvent is promoted by the stirrer in the oil-water mixer, so that the hydrocarbons can be recovered efficiently.
[0009]
　In some embodiments, the organic solvent may be flammable. In this case, the organic solvent may be kerosene, light oil, acetone, anthracene oil, or creosote oil. According to this configuration, since the organic solvent supplied to the oil-water separator is flammable, the organic solvent in which the hydrocarbon is dissolved can be used as the fuel.
[0010]
　In some embodiments, the gas may be a product gas obtained by gasifying coal. According to this configuration, in a coal gasification combined cycle power plant, hydrocarbons in the produced gas can be continuously recovered at low cost.
Effect of the invention
[0011]
　According to at least one embodiment of the present disclosure, water containing hydrocarbons is continuously removed by an autostrainer, and the removed hydrocarbons and water are combined with an oil phase containing hydrocarbons by an oil-water mixer and an oil-water separator. Since it is separated from the aqueous phase, hydrocarbons in the gas can be continuously recovered at low cost.
A brief description of the drawing
[0012]
FIG. 1 is a schematic configuration diagram of a hydrocarbon recovery facility according to a first embodiment of the present disclosure.
FIG. 2 is a schematic configuration diagram of a hydrocarbon recovery facility according to a second embodiment of the present disclosure.
Mode for carrying out the invention
[0013]
　Hereinafter, some embodiments of the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the following embodiments. The dimensions, materials, shapes, relative arrangements, and the like of the components described in the following embodiments are not intended to limit the scope of the present invention only to them, but are merely explanatory examples.
[0014]
(Embodiment 1)
　FIG. 1 shows a hydrocarbon recovery facility 1 according to the first embodiment of the present disclosure. The hydrocarbon recovery facility 1 is an auto strainer provided in a flush tower 2 for cooling the generated gas obtained by gasifying coal in an integrated coal gasification combined cycle plant and a pipe 6 communicating with the bottom of the flush tower 2. 3. The oil-water mixer 4 communicating with the auto strainer 3 via the pipe 6 and the oil-water separator 5 communicating with the oil-water mixer 4 via the pipe 7 are provided.
[0015]
　In the washing tower 2, a supply pipe 13 for supplying the generated gas to the washing tower 2, a water supply pipe 11 for supplying water from the top of the tower, and a generated gas cooled by the washing tower 2 flow out from the top of the tower. An outflow pipe 12 for doing so and a circulation pipe 14 for circulating water in the washing tower 2 are provided. One end of the circulation pipe 14 communicates with the auto strainer 3, and the other end communicates with the water washing tower 2. The circulation pipe 14 is provided with a pump 15 for circulating water.
[0016]
　For the auto strainer 3, for example, a scraping type auto strainer can be used. The scraping type auto strainer is an auto strainer having a configuration in which a trapped object captured by a fixed element is scraped off by a brush scraper, accumulated at the bottom, and discharged to the outside. However, the auto strainer 3 is not limited to this configuration, and may be an auto strainer having any configuration. As the scraping type auto strainer, for example, DNA-B of Daido Koki Co., Ltd. can be used.
[0017]
　The oil-water mixer 4 is provided with a supply pipe 16 for supplying an organic solvent. The organic solvent used needs to be an organic solvent having a large difference from the specific gravity of water in order to separate the oil phase and the aqueous phase in the oil-water separator 5. Moreover, it is preferable that the organic solvent used is flammable. Specific examples of the organic solvent used are kerosene, light oil, acetone, anthracene oil, and creosote oil, but the present invention is not limited to these, and any organic solvent having at least a specific gravity difference with water may be used. it can.
[0018]
　The oil-water separator 5 separates the oil phase and the aqueous phase by a difference in specific gravity. A separator having any configuration may be used as long as such separation can be performed. The oil-water separator 5 is provided with a drainage pipe 17 that communicates with the wastewater treatment facility and an oil supply pipe 18 that communicates with the combustion furnace. When the organic solvent supplied to the oil-water mixer 4 is non-flammable, the oil supply pipe 18 is communicated with a waste oil facility for treating the oil phase separated in the oil-water separator 5.
[0019]
　Next, the operation of the hydrocarbon recovery facility 1 according to the first embodiment will be described.
　When the generated gas supplied to the flush tower 2 via the supply pipe 13 rises in the flush tower 2, the water and the circulation pipe 14 supplied from the top of the tower to the flush tower 2 are circulated through the water supply pipe 11. Contact with water cools the produced gas. The cooled generated gas flows out of the flush tower 2 from the top of the tower, flows through the outflow pipe 12, and flows into the subsequent equipment.
[0020]
　On the other hand, when the produced gas and the water come into contact with each other in the washing tower 2 to cool the produced gas, the hydrocarbons contained in the produced gas are precipitated in the water, so that the hydrocarbons are mixed in the water obtained by cooling the produced gas. ing. This water flows out of the flush tower 2 from the bottom of the tower, flows through the pipe 6, and flows into the auto strainer 3. The auto strainer 3 continuously removes hydrocarbons from water mixed with hydrocarbons together with a part of water. The water from which the hydrocarbon has been removed is returned to the washing tower 2 through the circulation pipe 14 by the pump 15.
[0021]
　The hydrocarbon and water flowing out of the auto strainer 3 flow through the pipe 6 and flow into the oil-water mixer 4. An organic solvent is also supplied to the oil-water mixer 4 via the supply pipe 16. In the oil-water mixer 4, the hydrocarbon mixed in the water dissolves in the organic solvent, and an oil-water mixture in which the oil phase in which the hydrocarbon is dissolved and the aqueous phase are mixed is generated.
[0022]
　When the oil-water mixture flows out of the oil-water mixer 4, it flows through the pipe 7 and flows into the oil-water separator 5. By allowing the oil-water mixture to stand in the oil-water separator 5, the oil phase and the water phase are separated by the difference in specific gravity. The separated aqueous phase is discharged from the oil-water separator 5 through the drain pipe 17, and the separated oil phase is discharged from the oil-water separator 5 through the oil supply pipe 18. When the organic solvent is flammable, the oil phase flows through the oil supply pipe 18 and is supplied to the combustion furnace and used as fuel for the combustion furnace.
[0023]
　In this way, the water containing hydrocarbons is continuously removed by the auto strainer 3, and the removed hydrocarbons and water are separated into an oil phase containing hydrocarbons and an aqueous phase by the oil-water mixer 4 and the oil-water separator 5. Therefore, hydrocarbons in the gas can be continuously recovered at low cost.
[0024]
(Embodiment 2)
　Next, the hydrocarbon recovery facility according to the second embodiment will be described. The hydrocarbon recovery facility according to the second embodiment is provided with a configuration for promoting the production of the oil-water mixed solution in the oil-water mixer 4 with respect to the first embodiment. In the second embodiment, the same components as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
[0025]
　As shown in FIG. 2, the oil-water mixer 4 is provided with a stirrer 20 for stirring the inside. As the stirrer 20, for example, a stirrer blade having any shape can be used. Other configurations are the same as those in the first embodiment.
[0026]
　The operation of the hydrocarbon recovery facility 1 according to the second embodiment is basically the same as the operation described in the first embodiment. In the second embodiment, the stirring machine 20 in the oil-water mixer 4 stirs the contents of the oil-water mixer 4, so that the dissolution of the hydrocarbon in the organic solvent is promoted, so that the hydrocarbon can be recovered efficiently. Become.
[0027]
　In each of the first and second embodiments, the water washing tower 2 is the equipment of the integrated coal gasification combined cycle power plant, and the generated gas flowing into the water washing tower 2 is the produced gas obtained by gasifying coal. It is not limited to. The hydrocarbon recovery equipment of the present disclosure can be used in any equipment for recovering hydrocarbons mixed in water.
Code description
[0028]
1 Hydrocarbon recovery equipment
2 Water washing tower
3 Auto strainer
4 Oil-water mixer
5 Oil-water separator
6 Piping
7 Piping
11 Water supply pipe
12 Outflow pipe
13 Supply pipe
14 Circulation pipe
15 Pump
20 Stirrer
The scope of the claims
[Claim 1]
　A water washing tower that brings the gas and water into contact to deposit the hydrocarbons contained in the gas
　into the water, and an auto that continuously removes the hydrocarbons together with a part of the water from the water mixed with the hydrocarbons. An
　oil-water mixer in which a strainer, the hydrocarbon removed by the auto-strainer, water and an organic solvent are mixed to prepare an oil-water mixture, and the
　oil-water mixture prepared by the oil-water mixer are used as an oil phase. A
hydrocarbon recovery facility equipped with an oil-water separator that separates the water from the water phase .
[Claim 2]
　The hydrocarbon recovery facility according to claim 1, wherein the oil-water mixer includes a stirrer.
[Claim 3]
　The hydrocarbon recovery facility according to claim 1 or 2, wherein the organic solvent is flammable.
[Claim 4]
　The hydrocarbon recovery facility according to claim 3, wherein the organic solvent is kerosene, light oil, acetone, anthracene oil, or creosote oil.
[Claim 5]
　The hydrocarbon recovery facility according to any one of claims 1 to 4, wherein the gas is a produced gas obtained by gasifying coal.