Pipeline system for a solar power plant

Patent metadata

Field	Value
Publication number	US-9951756-B2
Application number	US-201515113125-A
Country	US
Kind code	B2
Filing date	Jan 23, 2015
Priority date	Jan 24, 2014
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

The invention relates to a pipeline system for a linearly concentrating solar power plant ( 1 ) with at least one receiver line ( 13 ), in which a heat transfer medium is heated by radiating solar energy, or with a central receiver and at least one emptying tank ( 21 ) and/or one store for the heat transfer medium, the heat transfer medium having a vapor pressure of less than 0.5 bar at the maximum operating temperature. Furthermore, a gas displacement system ( 31 ) is comprised, which connects gas spaces in the at least one emptying tank ( 21 ) and/or in the store for the heat transfer medium to one another and which has a central gas store ( 35 ) and/or a central gas connection ( 37 ) and a central exhaust gas outlet ( 39 ), through which gas can be discharged into the surroundings.

First claim

The invention claimed is:

1. A pipeline system for a solar power plant ( 1 ), wherein the pipeline system comprises at least one receiver line ( 13 ), in which a heat transfer medium is heated by radiating solar energy, or a central receiver, and at least one emptying tank ( 21 ) and/or a store for the heat transfer medium, the heat transfer medium having a vapor pressure of less than 0.5 bar at the maximum operating temperature, wherein, the pipeline system furthermore comprises a gas displacement system ( 31 ), which connects gas spaces of containers used in the solar power plant to one another and which has a central gas store ( 35 ) and/or a central gas connection ( 37 ) and a central exhaust gas outlet ( 39 ), through which gas can be discharged into the surroundings.

2. The pipeline system according to claim 1 , wherein the central gas connection ( 37 ) is assigned a pump, by means of which the pressure of the gas can be increased.

3. The pipeline system according to claim 1 , wherein the store for the heat transfer medium is a stratified store.

4. The pipeline system according to claim 1 , wherein the gas displacement system ( 31 ) is connected to a gas pressure system ( 43 ) which is connected to emptying valves of the receiver lines ( 13 ).

5. The pipeline system according to claim 1 , wherein the central exhaust gas outlet ( 39 ) has a device for gas purification ( 41 ).

6. The pipeline system according to claim 5 , wherein the device for gas purification ( 41 ) removes solids and/or nitrogen oxides from the gas.

7. The pipeline system according to claim 1 , wherein pipelines of the gas displacement system ( 31 ) run parallel to headers ( 9 , 11 ) and distributors ( 5 , 7 ) for the heat transfer medium to the pipeline loops ( 13 ).

8. The pipeline system according to claim 1 , wherein the receiver lines ( 13 ) are pipeline loops with receivers.

9. The pipeline system according to claim 1 , wherein headers and distributors are spaced apart from one another and the receiver lines run linearly between header and distributor.

10. The pipeline system according to claim 1 , wherein the containers used in the solar power plant comprise the at least one emptying tank ( 21 ) and the store for the heat transfer medium.

11. A solar power plant comprising the pipeline system according to claim 1 , wherein the solar power plant is a linearly concentrating solar power plant or a tower power plant.

12. A process for operating a solar power plant having a pipeline system according to claim 1 , wherein by the gas displacement system a pressure compensation is realized by supply of gas into a tank to be emptied or by removal of gas from a tank to be filled.

13. The process according to claim 12 , wherein gas is removed from the gas displacement system when there is a gas transfer from cold into a hot tank and gas is introduced into the gas displacement system when there is a gas transfer from a hot into a cold tank.

14. The process according to claim 12 , wherein fresh gas is supplied via the central gas connection ( 37 ).

15. The process according to claim 12 , wherein plant gas is introduced into the gas displacement system ( 31 ) via the central gas connection ( 37 ).

16. The process according to claim 12 , wherein the gas supplied to the gas displacement system ( 31 ) is inert with respect to the heat transfer medium.

17. The process according to claim 12 , wherein the gas supplied to the gas displacement system ( 31 ) is nitrogen.

18. The process according to claim 12 , wherein the gas supplied to the gas displacement system ( 31 ) contains water and/or carbon dioxide.

19. The process according to claim 12 , wherein the gas supplied to the gas displacement system ( 31 ) contains oxygen.

20. The process according to claim 12 , wherein the gas supplied to the gas displacement system ( 31 ) contains nitrogen oxides.

Assignees

• Basf Se

Inventors

• Wortmann Jürgen
• Lutz Michael
• Federsel Katharina
• Schierle-Arndt Kerstin
• Maurer Stephan
• Ladenberger Michael

Classifications

• F24S10/30

  with means for exchanging heat between two or more working fluids · CPC title

• F03G6/005 Primary

  Binary cycle plants where the fluid from the solar collector heats the working fluid via a heat exchanger · CPC title

• F24S20/20

  Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants · CPC title

• F24S90/00

  Solar heat systems not otherwise provided for · CPC title

• F24S40/00

  Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors (control arrangements F24S50/00) · CPC title