1. A liquefied natural gas plant comprising:
a storage tank configured to store liquefied natural gas;
a liquefied natural gas composition contained in the storage tank, wherein the liquefied natural gas composition comprises methane, ethane, propane and butane, wherein the liquefied natural gas composition contains a substantial amount of butane while being substantially free of hydrocarbon molecules having a molecular weight larger than butane; and
a natural gas processor configured to receive the liquefied natural gas composition from the storage tank and to separate therefrom a substantial amount of propane and butane,
wherein the natural gas processor is in the downstream of the storage tank, and wherein the plant does not comprise in the upstream of the storage tank another processor configured to separate a substantial amount of propane and butane from liquefied natural gas prior to storing in the storage tank.
2. The plant of claim 1, wherein the composition in the storage tank has a vapor pressure of about 2.5 bar or smaller and a temperature from about \u2212159\xb0 C. to about \u2212140\xb0 C.
3. The plant of claim 2, wherein the vapor pressure is about 0.7 bar or smaller.
4. The plant of claim 2, wherein the vapor pressure is about 0.25 bar or smaller.
5. The plant of claim 1, wherein the composition has a temperature from about \u2212159\xb0 C. to about \u2212140\xb0 C.
6. The plant of claim 1, wherein the storage tank has a volume greater than about 100,000 m3.
7. The plant of claim 1, wherein the composition contains butane in an amount from about 0.1 weight % to about 5 weight % of the total amount of the composition.
8. The plant of claim 1, wherein butane is in an amount from about 2 weight % to about 4.5 weight % of the total amount of the composition.
9. The plant of claim 1, wherein the composition is produced by a method comprising:
obtaining natural gas from a natural gas well; and
liquefying the natural gas without removing therefrom a substantial amount of butane and without adding thereto a substantial amount of at least one selected from the group consisting of ethane, propane and butane, thereby obtaining the composition.
10. The plant of claim 9, wherein the method further comprises removing a substantial amount of hydrocarbon molecules larger than butane from the natural gas.
11. The plant of claim 1, wherein the plant is located near a shore or on an offshore floating structure, wherein the plant is not connected via pipes with a liquefied natural gas well or a remote natural gas supply such that the plant is capable of processing liquefied natural gas unloaded only from an LNG tank ship docked near the plant.
12. The plant of claim 1, wherein the plant is located on an offshore floating structure.
13. The plant of claim 12, wherein the offshore floating structure comprises an LNG FSRU.
14. A ship comprising the plant of claim 1.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for unlocking a system associated with an electronic device, the method comprising:
receiving an unlock pattern which is input by a user and is for unlocking the system in an unlocking interface for pattern unlocking;
determining whether the unlock pattern is correct or not, and if the unlock pattern is not correct, recording the number of times the user inputs a wrong unlock pattern;
when the number of times the user inputs the wrong unlock pattern reaches a preset threshold, displaying an interface requiring the user to indicate whether the unlock pattern is forgotten;
when an indication that the unlock pattern is not forgotten is received, returning to displaying the unlocking interface for the pattern unlocking; and
when an indication that the unlock pattern is forgotten is received:
displaying the unlocking interface for personal information authentication;
receiving at least two pieces of personal information input by the user via the unlocking interface;
matching the at least two pieces of personal information input by the user with personal information pre-stored in a local database, wherein the personal information pre-stored in the local database is obtained through normal operation of the electronic device unrelated to unlocking or to a security function; and
after matching the at least two pieces of personal information input by the user with the personal information pre-stored in the local database:
unlocking the system if the at least two pieces of personal information input by the user are consistent with the personal information pre-stored in the local database; or
returning to the unlocking interface for pattern unlocking if the at least two pieces of personal information input by the user are inconsistent with the personal information pre-stored in the local database.
2. The method according to claim 1, wherein the at least two pieces of personal information comprise information from at least one of the following: contact information of a mobile phone address book, a mobile phone call record, a short message or multimedia message received by the user or a short message or multimedia message sent by the user.
3. The method according to claim 1, further comprising:
when the user fails in unlocking via a password, or gesture unlocking, or sound unlocking or fingerprint unlocking, displaying the unlocking interface for the personal information authentication.
4. The method according to claim 1, wherein the at least two pieces of personal information comprise a name of any contact person and a corresponding phone number stored in an address book of the electronic device.
5. The method according to claim 1, wherein the at least two pieces of personal information comprise a name of a contact person and a corresponding phone number of a dialed call.
6. The method according to claim 1, wherein the at least two pieces of personal information comprise a name of a contact person and a corresponding phone number of a short message.
7. An apparatus for unlocking a system, the apparatus comprising:
a receiving unit configured to receive an unlock pattern which is input by a user and is for unlocking the system in an unlocking interface for pattern unlocking;
a judging unit configured to determine whether the unlock pattern is correct;
a recording unit configured to record, if the unlock pattern is not correct, the number of times the user inputs a wrong unlock pattern; and
a display unit configured to, when the number of times the user inputs the wrong unlock pattern reaches a preset threshold, display an interface requiring the user to indicate whether the unlock pattern is forgotten, and when an indication that the unlock pattern is not forgotten is received, return to displaying the unlocking interface for pattern unlocking;
wherein, when an indication that the unlock pattern is forgotten is received:
the display unit is further configured to display the unlocking interface for personal information authentication;
the receiving unit is further configured to receive at least two pieces of personal information input by the user via the unlocking interface;
a matching unit is configured to match the at least two pieces of personal information input by the user with personal information pre-stored in a local database, wherein the personal information pre-stored in the local database is obtained through normal operation of the apparatus unrelated to unlocking or to a security function;
an unlocking unit is configured to unlock the system if the at least two pieces of personal information input by the user are consistent with the personal information pre-stored in the local database; and
a returning unit is configured to return to the pattern unlocking interface if the at least two pieces of personal information input by the user are inconsistent with the personal information pre-stored in the local database.
8. The apparatus according to claim 7, wherein the at least two pieces of personal information comprise a name of any contact person and a corresponding phone number stored in an address book of the apparatus.
9. The apparatus according to claim 7, wherein the apparatus is a mobile phone, and the mobile phone further comprises:
a radio frequency circuit, a microphone, a loudspeaker and a power supply circuit, wherein:
the radio frequency circuit is configured to establish communication between the mobile phone and a wireless network to implement receiving and sending of data between the mobile phone and the wireless network;
the microphone is configured to collect sound and convert the collected sound into sound data, so that the mobile phone sends the sound data to the wireless network through the radio frequency circuit;
the loudspeaker is configured to restore sound from sound data received by the mobile phone from the wireless network through the radio frequency circuit, and play the sound to the user; and
the power supply circuit is configured to supply power to each circuit or component of the mobile phone.
10. The apparatus according to claim 7, wherein the at least two pieces of personal information comprise information from at least one of the following: contact information of a mobile phone address book, a mobile phone call record, a short message or multimedia message received by the user or a short message or multimedia message sent by the user.
11. The apparatus according to claim 7, wherein the at least two pieces of personal information comprise a name of a contact person and a corresponding phone number of a dialed call.
12. The apparatus according to claim 7, wherein the at least two pieces of personal information comprise a name of a contact person and a corresponding phone number of a short message.
13. A terminal device, comprising:
a transceiver;
a memory;
one or more processors; and
one or more non-transitory software module stored in the memory and configured for execution by the one or more processors, the one or more modules including instructions to:
receive an unlock pattern which is input by a user and is for unlocking a system of the terminal device in an unlocking interface for pattern unlocking;
determine whether the unlock pattern is correct or not, and if the unlock pattern is not correct, record the number of times the user inputs a wrong unlock pattern;
when the number of times the user inputs the wrong unlock pattern reaches a preset threshold, display an interface requiring the user to indicate whether the unlock pattern is forgotten;
when an indication that the unlock pattern is not forgotten is received, return to the unlocking interface for the pattern unlocking; and
when an indication that the unlock pattern is forgotten is received:
display then unlocking interface for personal information authentication,
receive at least two pieces of personal information input by the user via the unlocking interface,
match the at least two pieces of personal information input by the user with personal information pre-stored in a local database, wherein the personal information pre-stored in the local database is obtained through normal operation of the terminal device unrelated to unlocking or to a security function; and
after matching the at least two pieces of personal information input by the user with the personal information pre-stored in the local database:
unlock the system if the at least two pieces of personal information input by the user are consistent with the personal information pre-stored in the local database; or
return to the unlocking interface for the pattern unlocking if the at least two pieces of personal information input by the user are inconsistent with the personal information pre-stored in the local database.