阅读说明：本技术 烃回收设备 (Hydrocarbon recovery apparatus ) 是由 吉田香织 菅利喜雄 挂迫诚治 于 2019-02-22 设计创作，主要内容包括：烃回收设备具备：水洗塔,其使气体与水接触,而使气体所包含的烃在水中析出；自动过滤器,其从混入有烃的水中连续地将烃与水的一部分一起除去；油水混合器,其将由自动过滤器除去了的烃及水与有机溶剂混合而调制油水混合液；以及油水分离器,其将由油水混合器调制的油水混合液分离为油相和水相。(The hydrocarbon recovery plant comprises: a water washing column for bringing the gas into contact with water to precipitate hydrocarbons contained in the gas in the water; an automatic filter for continuously removing hydrocarbons together with a part of water from the water into which the hydrocarbons are mixed; an oil-water mixer for mixing the hydrocarbon and water removed by the automatic filter with an organic solvent to prepare an oil-water mixture; and an oil-water separator that separates the oil-water mixture prepared by the oil-water mixer into an oil phase and a water phase.)

1. A hydrocarbon recovery apparatus, wherein,

the hydrocarbon recovery apparatus is provided with:

a water washing column for bringing a gas into contact with water to precipitate hydrocarbons contained in the gas in the water;

an automatic filter for continuously removing the hydrocarbon together with a part of the water mixed with the hydrocarbon from the water;

an oil-water mixer that mixes the hydrocarbon and the water removed by the automatic filter with an organic solvent to prepare an oil-water mixture; and

and an oil-water separator that separates the oil-water mixed liquid prepared by the oil-water mixer into an oil phase and a water phase.

2. The hydrocarbon recovery apparatus according to claim 1,

the oil-water mixer comprises a stirrer.

3. The hydrocarbon recovery apparatus according to claim 1 or 2, wherein,

the organic solvent is flammable.

4. The hydrocarbon recovery apparatus according to claim 3,

the organic solvent is kerosene, light oil, acetone, anthracene oil or creosote.

5. The hydrocarbon recovery apparatus according to any one of claims 1 to 4, wherein,

the gas is a product gas obtained by gasifying coal.

Technical Field

The present invention relates to a hydrocarbon recovery apparatus.

Background

Patent document 1 describes that in order to treat hydrocarbons contained in a product gas obtained by gasifying coal, hydrocarbons are precipitated in a water washing column and the precipitated hydrocarbons are removed by a filter. Since the hydrocarbons removed by the filter are solids having a size of about 5mm to egg, they are pulverized, dissolved in an organic solvent, and subjected to combustion treatment in a gasification furnace or an exhaust gas combustion furnace.

Disclosure of Invention

Problems to be solved by the invention

However, the system of patent document 1 requires a facility for pulverizing the solid hydrocarbon, and thus has a problem of high cost of the hydrocarbon treatment facility. In addition, there is a problem that handling of the solid hydrocarbon is difficult.

In view of the above circumstances, an object of at least one embodiment of the present invention is to provide a hydrocarbon recovery apparatus capable of continuously recovering hydrocarbons in a gas at low cost.

Means for solving the problems

A hydrocarbon recovery apparatus according to at least one embodiment of the present invention includes: a water washing column for bringing the gas into contact with water to precipitate hydrocarbons contained in the gas in the water; an automatic filter for continuously removing hydrocarbons together with a part of water from the water into which the hydrocarbons are mixed; an oil-water mixer for mixing the hydrocarbon and water removed by the automatic filter with an organic solvent to prepare an oil-water mixture; and an oil-water separator that separates the oil-water mixture prepared by the oil-water mixer into an oil phase and a water phase.

According to this configuration, since the water containing hydrocarbons is continuously removed by the automatic filter, and the removed hydrocarbons and water are separated into an oil phase and a water phase by the oil-water mixer and the oil-water separator, and the oil phase contains hydrocarbons, hydrocarbons in the gas can be continuously recovered at low cost.

In several embodiments, the oil-water mixer may include a blender. According to this configuration, the dissolution of the hydrocarbon into the organic solvent is promoted by the stirrer in the oil-water mixer, and therefore the hydrocarbon recovery becomes efficient.

In some embodiments, the organic solvent may be flammable. In this case, the organic solvent may be kerosene, gas oil, acetone, anthracene oil, or creosote. According to this configuration, since the organic solvent supplied to the oil-water separator is flammable, the organic solvent in which hydrocarbons are dissolved can be used as fuel.

In some embodiments, the gas may be a product gas obtained by gasifying coal. With this configuration, in the integrated coal gasification combined cycle power generation facility, hydrocarbons in the produced gas can be continuously recovered at low cost.

Effects of the invention

According to at least one embodiment of the present invention, since water containing hydrocarbons is continuously removed by an automatic filter and the removed hydrocarbons and water are separated into an oil phase and a water phase by an oil-water mixer and an oil-water separator, and the oil phase contains hydrocarbons, hydrocarbons in a gas can be continuously recovered at low cost.

Drawings

Fig. 1 is a schematic configuration diagram of a hydrocarbon recovery apparatus according to embodiment 1 of the present invention.

Fig. 2 is a schematic configuration diagram of a hydrocarbon recovery apparatus according to embodiment 2 of the present invention.

Detailed Description

Hereinafter, several 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 constituent members described in the following embodiments are not intended to limit the scope of the present invention to these, but are merely illustrative examples.

(embodiment mode 1)

Fig. 1 shows a hydrocarbon recovery apparatus 1 of embodiment 1 of the present invention. The hydrocarbon recovery apparatus 1 includes: a water washing tower 2 for cooling a product gas obtained by gasifying coal in an integrated coal gasification combined cycle power plant; an automatic filter 3 provided in a pipe 6 communicating with the bottom of the water washing column 2; an oil-water mixer 4 which communicates with the automatic filter 3 via a pipe 6; and an oil-water separator 5 that communicates with the oil-water mixer 4 via a pipe 7.

The water washing tower 2 is provided with: a supply pipe 13 for supplying the generated gas to the water washing tower 2; a water supply pipe 11 for supplying water from the top of the tower; an outflow pipe 12 for allowing the generated gas cooled in the water washing column 2 to flow out from the top of the column; and a circulation pipe 14 for circulating water in the water washing column 2. One end of the circulation pipe 14 communicates with the automatic filter 3, and the other end communicates with the water washing column 2. The circulation pipe 14 is provided with a pump 15 for circulating water.

For example, a scraping type automatic filter may be used as the automatic filter 3. The scraping type automatic filter is an automatic filter having the following structure: the caught matter captured by the fixing member is scraped by a brush scraper, and is accumulated in the bottom portion and discharged to the outside. However, the automatic filter 3 is not limited to this configuration, and may be an automatic filter having any configuration. As the scraping type automatic filter, for example, DNA-B of Daiikon Co., Ltd can be used.

The oil-water mixer 4 is provided with a supply pipe 16 for supplying an organic solvent. The organic solvent used is required to have a difference in specific gravity from water as large as possible for the separation of the oil phase and the water phase in the oil-water separator 5. In addition, the organic solvent used is preferably flammable. Specific examples of the organic solvent used include kerosene, gas oil, acetone, anthracene oil, and creosote oil, but the organic solvent is not limited thereto, and any organic solvent having a difference in specific gravity at least from water can be used.

The oil-water separator 5 separates an oil phase from a water phase by a difference in specific gravity. Any separator may be used as long as such separation is possible. The oil-water separator 5 is provided with a drain pipe 17 communicating with a drain treatment facility and an oil feed pipe 18 communicating with a combustion furnace. When the organic solvent supplied to the oil-water mixer 4 is nonflammable, the oil feed pipe 18 communicates with a waste oil facility for treating the oil phase separated in the oil-water separator 5.

Next, the operation of the hydrocarbon recovery apparatus 1 according to embodiment 1 will be described.

When the generated gas supplied to the water scrubber 2 through the supply pipe 13 rises in the water scrubber 2, the generated gas is cooled by contacting with the water supplied to the water scrubber 2 from the top of the tower through the water supply pipe 11 and the water flowing through the circulation pipe 14. The cooled generated gas flows out of the water scrubber 2 from the top of the tower, flows through the outflow pipe 12, and flows into the subsequent facilities.

On the other hand, when the product gas is cooled by contacting the product gas with water in the water scrubber 2, hydrocarbons contained in the product gas are precipitated in the water, and therefore the hydrocarbons are mixed in the water in which the product gas is cooled. The water flows out of the water washing column 2 from the bottom of the column, and flows into the automatic filter 3 through the pipe 6. The automatic filter 3 continuously removes hydrocarbons together with a part of water from the water mixed with the hydrocarbons. The water from which hydrocarbons have been removed is circulated through the circulation pipe 14 by the pump 15 and returned to the water washing column 2.

The hydrocarbons and water flowing out of the automatic filter 3 flow through the pipe 6 and flow into the oil-water mixer 4. The organic solvent is also supplied to the oil-water mixer 4 through the supply pipe 16. In the oil-water mixer 4, the hydrocarbon mixed in the water is dissolved in the organic solvent, thereby producing an oil-water mixture in which an oil phase in which the hydrocarbon is dissolved and a water phase are mixed.

When flowing out of the oil-water mixer 4, the oil-water mixture flows through the pipe 7 and flows into the oil-water separator 5. By leaving the oil-water mixture in the oil-water separator 5, the oil phase and the water phase are separated by a difference in specific gravity. The separated water phase is caused to flow out from the oil-water separator 5 through the drain pipe 17, and the separated oil phase is caused to flow out from the oil-water separator 5 through the oil feed pipe 18. When the organic solvent is flammable, the oil phase flows through the oil feed pipe 18 and is supplied to the combustion furnace, and is used as a fuel for the combustion furnace.

In this way, since the water containing hydrocarbons is continuously removed by the automatic filter 3, and the removed hydrocarbons and water are separated into an oil phase containing hydrocarbons and a water phase by the oil-water mixer 4 and the oil-water separator 5, the hydrocarbons in the gas can be continuously recovered at low cost.

(embodiment mode 2)

Next, a hydrocarbon recovery facility of embodiment 2 will be explained. The hydrocarbon recovery apparatus according to embodiment 2 is configured to promote the generation of an oil-water mixture in the oil-water mixer 4, in addition to embodiment 1. In embodiment 2, the same components as those in embodiment 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

As shown in fig. 2, a stirrer 20 for stirring the inside is provided in the oil-water mixer 4. As the stirrer 20, for example, a stirring blade having an arbitrary shape can be used. The other structure is the same as embodiment 1.