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1. 发明专利

JPH1068499A RESIDUAL LIQUID DISCHARGE DEVICE IN VAPORIZER 失效
公开(公告)号：JPH1068499A
公开(公告)日：1998-03-10
申请号：JP22713596
申请日：1996-08-28
申请人： KOBE STEEL LTD , OSAKA GAS CO LTD
发明人： SHINKAI KOICHI , UNO KOJI , KUROSE KATSUO , TSUKAMOTO AKIO , SAKURABA ICHIRO , KONISHI KEIZO , HISAKADO YOSHINORI , TAKADA MASANORI , YAMAZAKI TAKASHI , SHIMOKAWATOKO TAKAYUKI , OSADA YOSHIHIRO , MURO YOSHIHIRO
IPC分类号： F17C9/00 , F17C9/02
摘要： PROBLEM TO BE SOLVED: To dispense with a residual liquefied gas discharge device, and to stabilize the calorie of the vaporized gas by forming an inlet pipe to feed the raw material from a raw material supply source to a lower header tank in up-grade condition, and installing a bypass to connect the immediately downstream of a main control valve of the inlet pipe to an outlet piping of an vaporizer. SOLUTION: In stopping the operation, supply of the raw material liquefied gas is stopped, a main control valve 2 and an outlet side control valve 5 are closed, and a bypass control valve 7 of a bypass piping 6 is opened to continue vaporization of the liquefied gas left in the vaporizer 1. The pressure in the vaporizer 1 is increased by the vaporized gas. Because the inlet pipe 3 is arranged in up-grade condition toward the vaporizer 1, the residual liquefied gas flows toward the upstream of the inlet pipe 3 by the gravity and is pushed up in the bypass pipe 6. The liquefied gas is vaporized while it passes through a heat radiation pipe 8, and fed into an outlet pipe 4. The liquefied gas is not left in the inlet pipe 3, and fluctuation in calorie caused by the residual heavy component is eliminated in the re-starting.

2. 发明专利

JP2000262806A ADSORBENT REGENERATION METHOD 失效
公开(公告)号：JP2000262806A
公开(公告)日：2000-09-26
申请号：JP7219599
申请日：1999-03-17
申请人： OSAKA GAS CO LTD
发明人： SHIMOKAWATOKO TAKAYUKI , KANEDA MAKOTO , KAWAI TOSHINAGA
IPC分类号： B01D15/00 , B01J20/34
摘要： PROBLEM TO BE SOLVED: To efficiently regenerate an adsorbent whose adsorptive capability has been lowered due to adsorption of a substance to be adsorbed through avoiding the damage of the adsorbent at a high temperature. SOLUTION: In an adsorbent regeneration apparatus 1, two adsorption towers 2, 3 are reciprocally connected to an adsorption line 4 or an extraction line 5. Heavy oil fractions contained in the LPG flowing in the adsorption line 4 are adsorbed by an adsorbent in one adsorption tower 2 and the heavy oil fractions adsorbed in an adsorbent in the other adsorption tower 3 are made to quickly flow out to a fluid in a supercritical state to regenerate the adsorbent. In the fluid in the supercritical state, though the diffusion speed about 100 times as high as that of a liquid can be obtained, the temperature is not increased to such a high value as to deteriorate the adsorbent. Propane and butane, which are components of LPG, may be employed as the fluid to get into the supercritical state. The supercritical fluid is turned back to be at a normal pressure by decreasing the pressure by a pressure decrease valve 6 and the heavy oil fractions are separated in a separation tank 7 and then the resultant fluid is made to be a supercritical fluid again by heating and increasing the pressure by a heater 8 and a compressor 9 to be used for regeneration.

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