CN204609965U - A kind of LNG synthesizing section recycle compressor drive system - Google Patents
A kind of LNG synthesizing section recycle compressor drive system Download PDFInfo
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- CN204609965U CN204609965U CN201520093418.1U CN201520093418U CN204609965U CN 204609965 U CN204609965 U CN 204609965U CN 201520093418 U CN201520093418 U CN 201520093418U CN 204609965 U CN204609965 U CN 204609965U
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- steam turbine
- recycle compressor
- pot
- steam
- lng
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Abstract
The utility model relates to a kind of LNG synthesizing section recycle compressor drive system, it is characterized in that: at least possess: drive recycle compressor to rotate the steam turbine tandem motor unit of acting; The steam turbine tandem motor unit that described driving recycle compressor rotates acting has: give up pot and secondary of one-level gives up pot, provides lasting power for driving steam turbine rotates; Described steam turbine is connected by main steam line and one-level pot and the secondary pot that gives up that gives up, and give up pot and secondary of one-level gives up the steam that pot provides to steam turbine, and steam turbine carrys out driving steam turbine rotor by steam and rotates, and drives recycle compressor to rotate acting; Be connected with clutch between described steam turbine and double output shaft motor, clutch is for realizing the conversion between Steam Turbine Driven mode and electric motor-driving way.The features such as the utility model has compact structure, and floor space is little, arrangement convenience.
Description
Technical field
The utility model relates to the synthesizing section of LNG field coke-stove gas LNG (liquefied natural gas, LNG Liquefied natural gas), particularly a kind of LNG synthesizing section recycle compressor drive system.
Background technique
LNG technique be coke-stove gas just purify adopt active carbon remove inorganic sulfur, fine de-sulfur adopts the middle temperature catalytic hydrogenation dry desulfurizing process of mature and reliable, total sulfur content in coke-stove gas is dropped to below 0.1ppm, through three sections of synthetic reactions, CO, CO2 in coke-stove gas and hydrogen are reacted and generate SNG, hydrogeneous SNG is liquefied as LNG with low-temperature distillation process by blending agent refrigeration, and isolate hydrogen rich gas and rich nitrogen, LNG normal pressure stores, and entrucking is transported outward.
The effect of the recycle compressor of LNG synthesizing section is compressed a part for the gas phase from synthesizing section one-level water separation tank, the coke-stove gas mixing of the gas after compression and purification, the volume content of dilution coke-stove gas CO, CO2, then enters A reactor.
Recycle compressor in existing LNG system adopts motor Direct driver.In LNG system, the high-order heat of first stage reactor and second stage reactor gives up after pot reclaims through give up pot and secondary of one-level, and produce medium pressure steam, pressure is about 4.0MPa, some vapor is utilized to carry out driving steam turbine, recycle compressor is done work, can the energy be saved like this, raise the efficiency.
Model utility content
The purpose of this utility model is to provide a kind of compact structure, and floor space is little, the LNG synthesizing section recycle compressor drive system of arrangement convenience.
To achieve these goals, a kind of LNG synthesizing section recycle compressor drive system, is characterized in that: at least possess: drive recycle compressor to rotate the steam turbine tandem motor unit of acting; The steam turbine tandem motor unit that described driving recycle compressor rotates acting has: give up pot and secondary of one-level gives up pot, provides lasting power for driving steam turbine rotates; Described steam turbine is connected by main steam line and one-level pot and the secondary pot that gives up that gives up, and give up pot and secondary of one-level gives up the steam that pot provides to steam turbine, and steam turbine carrys out driving steam turbine rotor by steam and rotates, and drives recycle compressor to rotate acting; Be connected with clutch between described steam turbine and double output shaft motor, clutch is for realizing the conversion between Steam Turbine Driven mode and electric motor-driving way.
Described double output shaft motor is connected between clutch and recycle compressor, rotates acting for using electric energy Direct driver recycle compressor; Recycle compressor, the kinetic energy accepted from steam turbine or motor drives with the object realized recycle gas compressed action.
Be connected with double output shaft motor by clutch between described steam turbine and recycle compressor, steam turbine, clutch, between double output shaft motor and recycle compressor, form coaxial tandem arrangement.
Described recycle compressor is reciprocal compressor.
Effect of the present utility model is: the utility model adopts the high-order heat of first stage reactor and second stage reactor in LNG system to give up after pot reclaims through give up pot and secondary of one-level, produce the vapour source of medium pressure steam as industrial turbine, control the back pressure of steam turbine simultaneously, drive recycle compressor work.Steam turbine is arranged in limit, the leftmost side, and by being followed successively by steam turbine, clutch, double output shaft motor, recycle compressor from left to right, its compact structure, floor space is little, arrangement convenience, can meet the performance requirement of LNG system for recycle compressor group completely.
Accompanying drawing explanation
Below in conjunction with embodiment's accompanying drawing, the utility model is described in further detail:
Fig. 1 is embodiment's principle explanatory drawing of the present utility model.
In figure: 1, one-level is given up pot, 2, secondary gives up pot, 3, main steam line, 4, steam turbine, 5, clutch, 6, motor, 7, recycle compressor.
Embodiment
As shown in Figure 1, a kind of LNG synthesizing section recycle compressor drive system, at least possesses: drive recycle compressor to rotate the steam turbine tandem motor unit of acting.
The steam turbine tandem motor unit driving recycle compressor to rotate acting has: give up pot 1 and secondary of one-level gives up pot 2, provides lasting power for driving steam turbine 4 rotates;
Steam turbine 4, is connected by main steam line 3 and one-level pot 1 and the secondary pot 2 that gives up that gives up, and give up pot 1 and secondary of one-level gives up the steam that pot 2 provides to steam turbine 4, and steam turbine 4 carrys out driving steam turbine rotor by steam and rotates, and drives recycle compressor 7 to rotate acting;
Clutch 5, is connected between steam turbine 4 and double output shaft motor 6, and clutch is for realizing the conversion between Steam Turbine Driven mode and electric motor-driving way;
Double output shaft motor 6, is connected between clutch 5 and recycle compressor 7, rotates acting for using electric energy Direct driver recycle compressor 7;
Recycle compressor 7, the kinetic energy accepted from steam turbine or motor drives with the object realized recycle gas compressed action.
Be connected with double output shaft motor 6 by clutch 5 between described steam turbine 4 and recycle compressor 7, steam turbine 4, clutch 5, between double output shaft motor 6 and recycle compressor 7, form coaxial tandem arrangement.
Described recycle compressor 7 is reciprocal compressor.
The steam turbine 4 tandem motor unit that the utility model drives recycle compressor 7 to rotate acting adopts coaxially arranged scheme, steam turbine is arranged in limit, the leftmost side, by being followed successively by steam turbine, clutch, double output shaft motor, recycle compressor from left to right, its compact structure, floor space is little, arrangement convenience, can meet the performance requirement of LNG system for recycle compressor group completely.
Claims (4)
1. a LNG synthesizing section recycle compressor drive system, is characterized in that: at least possess: drive recycle compressor to rotate the steam turbine tandem motor unit of acting; The steam turbine tandem motor unit that described driving recycle compressor rotates acting has: give up pot (1) and secondary of one-level to give up pot (2), for driving steam turbine (4) rotation provides lasting power; Described steam turbine (4) is connected by main steam line (3) and one-level pot (1) and the secondary pot (2) that gives up that gives up, give up pot (1) and secondary of one-level gives up the steam that pot (2) provides to steam turbine (4), steam turbine (4) carrys out driving steam turbine rotor by steam and rotates, and drives recycle compressor (7) to rotate acting; Be connected with clutch (5) between described steam turbine (4) and double output shaft motor (6), clutch is for realizing the conversion between Steam Turbine Driven mode and electric motor-driving way.
2. a kind of LNG synthesizing section recycle compressor drive system according to claim 1, it is characterized in that: described double output shaft motor (6) is connected between clutch (5) and recycle compressor (7), rotating acting for using electric energy Direct driver recycle compressor (7); Recycle compressor (7), the kinetic energy accepted from steam turbine or motor drives with the object realized recycle gas compressed action.
3. a kind of LNG synthesizing section recycle compressor drive system according to claim 1, it is characterized in that: be connected with double output shaft motor (6) by clutch (5) between described steam turbine (4) and recycle compressor (7), steam turbine (4), clutch (5), between double output shaft motor (6) and recycle compressor (7), form coaxial tandem arrangement.
4. a kind of LNG synthesizing section recycle compressor drive system according to claim 1, is characterized in that: described recycle compressor (7) is reciprocal compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093418.1U CN204609965U (en) | 2015-02-10 | 2015-02-10 | A kind of LNG synthesizing section recycle compressor drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093418.1U CN204609965U (en) | 2015-02-10 | 2015-02-10 | A kind of LNG synthesizing section recycle compressor drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204609965U true CN204609965U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520093418.1U Expired - Fee Related CN204609965U (en) | 2015-02-10 | 2015-02-10 | A kind of LNG synthesizing section recycle compressor drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204609965U (en) |
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2015
- 2015-02-10 CN CN201520093418.1U patent/CN204609965U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20200210 |