LOW-TEMPERATURE LIQUEFIED GAS VAPORIZATION DEVICE

• Main Authors: YOKOYAMA TERUAKI, YAMAZAKI JUNJI, IKEDA SEIDO
• Format: Patent
• Language: English; Japanese
• Published: 13.06.2019
• Subjects: BLASTING; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; HEATING; LIGHTING; MECHANICAL ENGINEERING; STORING OF DISTRIBUTING GASES OR LIQUIDS; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS

To suppress thermal stress and thermal fatigue of a heat transfer pipe in a low-temperature liquefied gas vaporization device.SOLUTION: A low-temperature liquefied gas vaporization device (submerged combustion type vaporization device 1) includes a bubble ejection mechanism 100 which has a plurality of sparge pipes 15 with many bubble ejection holes 151 formed on circumferences thereof and is adapted to eject high-temperature gas into water through the bubble ejection holes, and a heat exchanger which is arranged at an upper side of the bubble ejection mechanism in a water tank and adapted to vaporize the low-temperature liquefied gas flowing inside a heat transfer pipe 31 through agitation and heating of the water with bubbles ejected through the sparge pipes. At least a part of the bubble ejection holes formed on the circumference of the sparge pipe is a detour bubble ejection hole which is provided in a lower half of the sparge pipe so that a hole axis thereof is directed downward from a horizontal level.SELECTED DRAWING: Figure 6 【課題】低温液化ガスの気化装置において、伝熱管の熱応力及び熱疲労を抑制する。【解決手段】低温液化ガスの気化装置（水中燃焼式気化装置１）は、周面に多数の気泡噴出孔１５１が形成された複数のスパージパイプ１５を有すると共に、高温のガスを、気泡噴出孔を通じて水中に噴出するよう構成された気泡噴出機構１００と、水槽内における気泡噴出機構の上側に配置されかつ、スパージパイプから噴出された気泡による水の攪拌と加熱により、伝熱管３１の内部を流れる低温液化ガスを気化するように構成された熱交換器と、を備える。スパージパイプの周面に形成された気泡噴出孔の少なくとも一部は、スパージパイプの下半分に設けられることによって、その孔軸が水平よりも下向きとなるように設けられた迂回気泡噴出孔である。【選択図】図６