Method of diluting liquefied gases专利检索-液化天然气燃料气体燃料燃料种类专利检索查询-专利查询网

Method of diluting liquefied gases

阅读：794发布：2023-05-20

专利汇可以提供Method of diluting liquefied gases专利检索，专利查询，专利分析的服务。并且A method in which a controlled amount of a gas of lower potential heating capacity is dissolved in an oxidizable liquefied gas to dilute the oxidizable liquefied gas and thereafter the dilute liquefied gas is vaporized. Addition of the gas of lower potential heating capacity is controlled to avoid vaporization of the oxidizable liquefied gas until after dilution. Air is used to dilute liquefied natural gas. Apparatus having a storage tank for a liquefied oxidizable gas, a first conduit from the storage tank to a first pump for removing liquefied oxidizable gas, a second conduit from the pump to a diluting tank for delivering liquefied oxidizable gas thereto, a third conduit communicating with a second pump and the diluting tank for supplying a diluting gas to the liquefied oxidizable gas, and a fourth conduit from the diluting tank to a vaporizer for removing diluted liquefied oxidizable gas from the diluting tank and vaporizing it.，下面是Method of diluting liquefied gases专利的具体信息内容。

权利要求

2. The method of claim 1 in which the addition of the gas of lower potential heating capacity is controlled as to the amount added, the temperature at which added, or both, to substantially avoid vaporization of the oxidizable liquefied gas until after dilution.

3. The method of claim 1 in which the oxidizable gas is liquefied natural gas and the gas of lower potential heating capacity is air.

4. The method of claim 3 in which the liquefied natural gas is at a temperature below -200* F. and the air added to the liquefied natural gas is below -200* F.

5. The method of claim 2 in which the temperature of the added diluting gas is about the same as the temperature of the liquefied oxidizable gas during the addition.

6. The method of claim 1 in which the liquefied oxidizable gas is at a pressure of not more than 150 psia during the dilution.

7. The method of lowering the potential heating capacity of liquefied natural gas which comprises: feeding a stream of air at a temperature of about 80* F. to about -255* F. and a pressure of about 20 psia to 150 psia to liquefied natural gas at a temperature of about -260* F. to about -210* F. and a pressure of about 20 psia to 150 psia to liquefied natural gas, the air being fed at a rate which effects substantial dilution of the air in the liquefied natural gas, and thereafter vaporizing the diluted liquefied natural gas.

8. The method of claim 7 in which from about 2 to 15 percent by volume of air is dissolved in the liquefied natural gas.

9. The method of lowering the potential heating capacity of liquefied natural gas which comprises: removing liquefied natural gas from a storage tank in which it is stored at about -255* F. or lower and transferring it to a diluting tank at a temperature of about -255* F. to -210* F. and a pressure of about 20 psia to 150 psia, passing a stream of cooled air, at a pressure above the pressure in the diluting tank up to a pressure of 150 psia and at a temperature within 10* F. of the temperature of the diluted liquefied natural gas in the diluting tank, to the liquefied natural gas in the diluting tank to dissolve air therein and dilute the liquefied natural gas, and withdrawing diluted liquefied natural gas from the diluting tank and vaporizing it.

10. The method of claim 9 in which the diluted liquefied natural gas withdrawn from the diluting tank is passed in heat exchange flow with air to supply the stream of cool air.

11. The method of claim 10 in which the stream of cool air is fed into the liquefied natural gas in the diluted tank below its surface.

12. Apparatus for diluting a liquefied oxidizable gas with another gas comprising: a storage tank for a liquefied oxidizable gas, a conduit from the storage tank to a walled enclosure for delivering liquefied oxidizable gas thereto, a conduit communicating with a compressor, aftercooler and dryer and the walled enclosure for supplying a diluting gas to the liquefied oxidizable gas, and a conduit from the walled enclosure to a vaporizer for removing diluted liquefied oxidizable gas from the walled enclosure and vaporizing it.

13. Apparatus according to claim 12 in which the conduit from the walled enclosure to the vaporizer includes a pump to aid in removing diluted liquefied gas from the walled enclosure.

14. Apparatus according to claim 12 including a heat exchanger through which the conduit from the compressor to the walled enclosure, and the conduit from the walled enclosure to the vaporizer, extend.

15. Apparatus for diluting a liquefied oxidizable gas with another gas comprising: a storage tank for a liquefied oxidizable gas, a first conduit from the stOrage tank to a first pump for removing liquefied oxidizable gas, a second conduit from the pump to a walled enclosure for delivering liquefied oxidizable gas thereto, a third conduit communicating with a compressor, aftercooler, and dryer and the walled enclosure for supplying a diluting gas to the liquefied oxidizable gas, a fourth conduit from the walled enclosure to a second pump for removing diluted liquefied oxidizable gas from the walled enclosure, and a fifth conduit from the second pump for supplying the diluted liquefied oxidizable gas to a vaporizer.

16. Apparatus according to claim 15 including a heat exchanger through which the third and fifth conduits extend.

17. Apparatus according to claim 15 in which the walled enclosure is a contact vessel, and the third and fourth conduits communicate therewith below a design liquefied oxidizable gas level of the contact vessel.

18. Apparatus according to claim 17 in which the second conduit communicates with the contact vessel above a design liquefied oxidizable gas level of the contact vessel.

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Method of diluting liquefied gases

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