CN217323919U

CN217323919U - System for utilize carbon dioxide's among abandonment oil reservoir system methyl alcohol

Info

Publication number: CN217323919U
Application number: CN202221314586.5U
Authority: CN
Inventors: 王华峰; 尹淑彦
Original assignee: Shanghai Weijia Tianyi New Energy Technology Co ltd
Current assignee: Shanghai Weijia Tianyi New Energy Technology Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-08-30
Anticipated expiration: 2032-05-30

Abstract

The utility model provides an utilize system of system methyl alcohol of carbon dioxide in abandonment oil reservoir, abandonment oil reservoir pass through pipeline with carbon dioxide collection system link to each other, carbon dioxide collection system pass through the pipeline and link to each other with methyl alcohol synthesis reaction unit, methyl alcohol synthesis reaction unit pass through the pipeline and link to each other with resultant separator, resultant separator pass through the pipeline with byproduct recovery unit link to each other, byproduct recovery unit, hydrogen preparation facilities pass through the pipeline respectivelyAnd the product separation device is connected with the methanol storage device through a pipeline. System for utilize system methyl alcohol of carbon dioxide in abandonment oil reservoir be applicable to offshore oil well development platform, can utilize clean energy such as wind energy and tidal energy to carry out the preparation of hydrogen, can also be with hydrogen and CO ₂ The methanol is synthesized and produced, and the whole process is green and pollution-free.

Description

System for utilize carbon dioxide's among abandonment oil reservoir system methyl alcohol

Technical Field

The utility model belongs to carbon dioxide displacement of reservoir oil field especially relates to a system for utilize system methyl alcohol of carbon dioxide in the abandonment oil reservoir.

Background

The carbon dioxide flooding technology is a technology for injecting carbon dioxide into an oil layer to improve the oil recovery rate of an oil field. The technology can increase the oil reservoir recovery ratio and reduce the production risk of gas injection oil displacement, so the technology is widely applied to the production of a plurality of large oil fields in China. After oil is exploited by the technology, the original oil reservoir is changed into a carbon dioxide reservoir, the exploitation port is directly sealed and abandoned at present, and the carbon dioxide reservoir is not well utilized.

After the oil-gas pipeline for conveying is used for a period of time, the use efficiency is gradually reduced due to the reduction of oil production, and finally the oil-gas pipeline is idle and abandoned, so that the resource waste of a large amount of basic investment is caused. Even if a carbon dioxide flooding technology is not used, a large amount of carbon dioxide can still be collected in the waste oil well pipeline, and the concentration of the carbon dioxide in the oil well pipeline is far higher than that in the air.

The methanol is an important chemical raw material, can be used as a fuel, and has wide development and application prospects. The production of methanol and carbon dioxide is a necessary industrial raw material, and the gas source of high-purity carbon dioxide in China is very short. On one hand, the high-quality carbon dioxide reservoir is sealed and abandoned, and on the other hand, carbon dioxide is needed for production.

On the sea, oil deposits are far away and insufficient in infrastructure, but natural energy resources, such as wind energy, are good, and wind power generation is constructed in the places under the condition, but the wind power generation needs to be sent back to the continent through electric wires, so that the cost is too high.

Disclosure of Invention

In view of this, the utility model discloses aim at overcoming the defect among the prior art, propose a system for making methyl alcohol of carbon dioxide in utilizing the abandonment oil reservoir.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a system for preparing methanol by using carbon dioxide in a waste oil reservoir comprises a carbon dioxide collecting device, a methanol synthesis reaction device, a hydrogen preparation device, a byproduct recovery device, a product separation device and a methanol storage device, wherein the waste oil reservoir is connected with the carbon dioxide collecting device through a conveying pipeline, the carbon dioxide collecting device is connected with the methanol synthesis reaction device through a pipeline, the methanol synthesis reaction device is connected with the product separating device through a pipeline, the product separation device is connected with the byproduct recovery device through a pipeline, the byproduct recovery device and the hydrogen preparation device are respectively connected with the methanol synthesis reaction device through pipelines, the product separation device is connected with the methanol storage device through a pipeline, and the methanol storage device outputs methanol through the conveying pipeline.

Further, the conveying pipeline comprises an oil conveying pipeline, a hose assembly is arranged inside the oil conveying pipeline, and an oil pump is arranged at one end of the oil conveying pipeline.

Furthermore, the hose assembly comprises a plurality of hoses which are connected through one-way valves.

Furthermore, an inlet sleeve is arranged on the oil pipeline and communicated with the oil pipeline, and the inlet end of the hose assembly is arranged in the inlet sleeve.

Further, the inlet sleeve is obliquely arranged; the included angle between the inlet sleeve and the oil pipeline is 10-89 degrees.

Further, the outer diameter of the hose is smaller than half of the inner diameter of the oil pipeline.

Compared with the prior art, the utility model discloses following advantage has:

system for utilize system methyl alcohol of carbon dioxide in abandonment oil reservoir be applicable to offshore oil well development platform, can utilize clean energy such as wind energy and tidal energy to carry out the preparation of hydrogen at offshore oil well development platform, can also be with hydrogen and CO ₂ The methanol is synthesized and produced, and the whole process is green and pollution-free.

Utilize system of carbon dioxide's system methyl alcohol in the abandonment oil reservoir carbon dioxide reuse in the abandonment oil reservoir of sealing up, changing waste into valuables utilizes dumped carbon dioxide to produce alcohols compound (like methyl alcohol), the material saving cost, with dumped pipeline reuse, saved methyl alcohol cost of transportation simultaneously.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic diagram of a system for producing methanol using carbon dioxide in a depleted oil reservoir according to an embodiment of the present invention;

fig. 2 is a schematic view of a conveying pipeline according to an embodiment of the present invention.

Description of reference numerals:

1. a carbon dioxide collection device; 2. a methanol synthesis reaction device; 3. a hydrogen production unit; 4. a byproduct recovery device; 5. a delivery conduit; 6. a product separation device; 7. a methanol storage device; 5-1, an oil pump; 5-2, a hose; 5-3, a one-way valve; 5-4, oil pipelines; 5-5, an inlet sleeve.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-2, a system for preparing methanol by using carbon dioxide in a waste oil reservoir comprises a carbon dioxide collection device 1, a methanol synthesis reaction device 2, a hydrogen preparation device 3, a byproduct recovery device 4, a product separation device 6, and a methanol storage device 7, wherein the waste oil reservoir is connected with the carbon dioxide collection device 1 through a conveying pipeline 5, the carbon dioxide collection device 1 is connected with the methanol synthesis reaction device 2 through a pipeline, the methanol synthesis reaction device 2 is connected with the product separation device 6 through a pipeline, the product separation device 6 is connected with the byproduct recovery device 4 through a pipeline, the byproduct recovery device 4 and the hydrogen preparation device 3 are respectively connected with the methanol synthesis reaction device 2 through pipelines, and the product separation device 6 is connected with the methanol storage device 7 through a pipeline, the methanol storage device 7 outputs methanol through the conveying pipeline 5.

The carbon dioxide collecting device 1 adopts a carbon dioxide miner, and the carbon dioxide in the waste oil reservoir is mined out through a conveying pipeline 5 and is conveyed into the methanol synthesis reaction device 2 at the other end; the methanol synthesis reaction device 2 adopts a methanol synthesis tower, the methanol synthesis tower is connected with a control system, the control system is used for monitoring and controlling the chemical reaction process in the methanol synthesis tower, the input hydrogen and carbon dioxide are subjected to chemical reaction under the action of a certain temperature and a catalyst to prepare methanol, the control system is simultaneously connected with a product separation device 6, the product separation device 6 adopts a methanol separator, the mixed gas generated by the reaction is conveyed to the methanol separator, the finished product methanol is separated and conveyed to a methanol storage device 7 for temporary storage, and the improved original waste oil conveying pipeline 5-4 is intermittently reused to convey the finished product methanol out; the methanol storage device 7 adopts a methanol storage tank; the hydrogen preparation device 3 adopts a hydrogen production machine; the by-product recovering apparatus 4 is a conventional commercially available apparatus.

Due to the different selectivity of the catalyst in the chemical reaction, the compound generated in the methanol synthesis reaction apparatus 2 contains not only methanol but also other by-products of insufficient reaction, such as CO, CH2O, etc. In the product separation system, methanol is separated into a methanol storage 7, other raw material gases and by-products that do not participate in the reaction are separated into a by-product recovery unit 4, the by-product recovery unit 4 is connected to the methanol synthesis reaction unit 2, and these by-products are sent to the reaction unit again to be reacted again.

Because the inner wall of the waste oil pipeline 5-4 is adhered with oil, the methanol is used for conveying methanol to cause the methanol to be doped with impurities and influence the quality of the methanol, and therefore, the methanol is reformed into the conveying pipeline 5 to meet the requirement of conveying the methanol at the same time. The concrete structure is as follows:

the inside of the oil conveying pipeline 5-4 is provided with a hose 5-2 assembly, one end of the oil conveying pipeline 5-4 is provided with an oil pump 5-1, the power of the oil pump 5-1 is 140 KW and 250KW, the oil pump 5-1 periodically inputs pressure to the inside of the oil conveying pipeline 5-4, and methanol in the hose 5-2 is conveyed out through pressure extrusion.

The hose 5-2 assembly comprises a plurality of hoses 5-2, the hoses 5-2 are made of corrosion-resistant rubber, the hoses 5-2 are connected through one-way valves 5-3, inlet sleeves 5-5 are arranged on the oil pipelines 5-4, the inlet sleeves 5-5 are communicated with the oil pipelines 5-4, the inlet ends of the hose 5-2 assembly are arranged in the inlet sleeves 5-5, the inlet sleeves 5-5 are obliquely arranged, an included angle between the inlet sleeves 5-5 and the oil pipelines 5-4 is 30 degrees, and the outer diameter of the hoses 5-2 is limited to be one fourth of the inner diameter of the oil pipelines 5-4.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for preparing methanol by using carbon dioxide in a waste oil reservoir is characterized in that: including carbon dioxide collection system, methyl alcohol synthesis reaction unit, hydrogen preparation facilities, byproduct recovery unit, resultant separator, methyl alcohol storage device, the abandonment oil reservoir pass through pipeline with carbon dioxide collection system link to each other, carbon dioxide collection system pass through the pipeline and link to each other with methyl alcohol synthesis reaction unit, methyl alcohol synthesis reaction unit pass through the pipeline and link to each other with resultant separator, resultant separator pass through the pipeline with byproduct recovery unit link to each other, byproduct recovery unit, hydrogen preparation facilities respectively pass through the pipeline with methyl alcohol synthesis reaction unit link to each other, resultant separator pass through the pipeline with methyl alcohol storage device link to each other, methyl alcohol storage device pass through pipeline export methyl alcohol.

2. The system for producing methanol using carbon dioxide in a depleted oil reservoir according to claim 1, wherein: the conveying pipeline comprises an oil conveying pipeline, a hose assembly is arranged inside the oil conveying pipeline, and an oil pump is arranged at one end of the oil conveying pipeline.

3. The system for producing methanol using carbon dioxide in a depleted oil reservoir according to claim 2, wherein: the hose assembly comprises a plurality of hoses which are connected through one-way valves.

4. The system for producing methanol using carbon dioxide in a depleted oil reservoir according to claim 3, wherein: the oil pipeline is provided with an inlet sleeve, the inlet sleeve is communicated with the oil pipeline, and the inlet end of the hose assembly is arranged in the inlet sleeve.

5. The system for producing methanol using carbon dioxide in a depleted oil reservoir according to claim 4, wherein: the inlet sleeve is obliquely arranged; the included angle between the inlet sleeve and the oil pipeline is 10-89 degrees.

6. The system for producing methanol using carbon dioxide in a depleted oil reservoir according to claim 3, wherein: the outer diameter of the hose is smaller than half of the inner diameter of the oil pipeline.