The Experts below are selected from a list of 5931 Experts worldwide ranked by ideXlab platform

Guangjin Chen - One of the best experts on this subject based on the ideXlab platform.

  • methane recovery from hydrate bearing sediments by the combination of ethylene Glycol Injection and depressurization
    2018
    Co-Authors: Yifei Sun, Jinrong Zhong, Tao Zhu, Liangliang Ren, Guangjin Chen, Changyu Sun
    Abstract:

    Considering the limitations of a single method for hydrate recovery, the combination of the traditional methods receives more attention nowadays. In this work, the gas production behavior from a synthesized methane hydrate reservoir by the combined method of ethylene Glycol (EG) Injection and depressurization was investigated in a medium-size three-dimensional reactor. The hydrate-bearing sediments were prepared according to the temperature and pressure conditions of the South China Sea reservoir. The results indicated that the production period could be significantly shortened by the combination method. After comparison of different EG Injection conditions, it is found that the migration characteristics of EG solution in the reservoir were quite different in the EG Injection stage, which caused different gas production rates in the follow-up process. Moreover, the increase of the EG concentration or EG Injection volume could enhance the gas production rate. From analysis of the evolution of the low-tempe...

  • gas production from methane hydrate bearing sands by ethylene Glycol Injection using a three dimensional reactor
    2011
    Co-Authors: Qing Yuan, Changyu Sun, Xin Yang, Guangjin Chen
    Abstract:

    The gas production from methane-hydrate-bearing sediment by injecting ethylene Glycol (EG) solution was investigated using a three-dimensional experimental apparatus. Eight experimental runs were performed to examine the influence of operation conditions on hydrate dissociation by EG Injection. The variations of pressure and temperature distribution in the reactor stimulated by the injected EG were obtained for the gas production process of the hydrate. The variation trend of temperature in the Injection stage shows a shape of a “well” because of heat transfer and hydrate dissociation. The appearance sequence of temperature “well” and “well” depth is different for every port at different depths and radii. The effects of the concentration and quantity of EG and soaking time on the gas production ratio are examined. It shows that there exists an optimal value of the mass ratio of injected EG solution to initial water, where a maximum gas production ratio appears. When other conditions are similar, the gas a...

Changyu Sun - One of the best experts on this subject based on the ideXlab platform.

  • methane recovery from hydrate bearing sediments by the combination of ethylene Glycol Injection and depressurization
    2018
    Co-Authors: Yifei Sun, Jinrong Zhong, Tao Zhu, Liangliang Ren, Guangjin Chen, Changyu Sun
    Abstract:

    Considering the limitations of a single method for hydrate recovery, the combination of the traditional methods receives more attention nowadays. In this work, the gas production behavior from a synthesized methane hydrate reservoir by the combined method of ethylene Glycol (EG) Injection and depressurization was investigated in a medium-size three-dimensional reactor. The hydrate-bearing sediments were prepared according to the temperature and pressure conditions of the South China Sea reservoir. The results indicated that the production period could be significantly shortened by the combination method. After comparison of different EG Injection conditions, it is found that the migration characteristics of EG solution in the reservoir were quite different in the EG Injection stage, which caused different gas production rates in the follow-up process. Moreover, the increase of the EG concentration or EG Injection volume could enhance the gas production rate. From analysis of the evolution of the low-tempe...

  • gas production from methane hydrate bearing sands by ethylene Glycol Injection using a three dimensional reactor
    2011
    Co-Authors: Qing Yuan, Changyu Sun, Xin Yang, Guangjin Chen
    Abstract:

    The gas production from methane-hydrate-bearing sediment by injecting ethylene Glycol (EG) solution was investigated using a three-dimensional experimental apparatus. Eight experimental runs were performed to examine the influence of operation conditions on hydrate dissociation by EG Injection. The variations of pressure and temperature distribution in the reactor stimulated by the injected EG were obtained for the gas production process of the hydrate. The variation trend of temperature in the Injection stage shows a shape of a “well” because of heat transfer and hydrate dissociation. The appearance sequence of temperature “well” and “well” depth is different for every port at different depths and radii. The effects of the concentration and quantity of EG and soaking time on the gas production ratio are examined. It shows that there exists an optimal value of the mass ratio of injected EG solution to initial water, where a maximum gas production ratio appears. When other conditions are similar, the gas a...

Cyril Pellaton - One of the best experts on this subject based on the ideXlab platform.

  • near fatal intoxication by nicotine and propylene Glycol Injection a case report of an e liquid poisoning
    2019
    Co-Authors: Mhedi Belkoniene, Jennifer Socquet, Denise Njembafreiburghaus, Cyril Pellaton
    Abstract:

    Background Concern about intoxication by e-liquid is growing as calls to poison control centers have increased since their introduction. Only three cases of intoxication by Injection have been reported worldwide. Our case is unique because of the precise follow-up of a patient who survived a lethal dose of self-injected e-liquid, without other co-intoxication.

  • near fatal intoxication by nicotine and propylene Glycol Injection a case report of an e liquid poisoning
    2019
    Co-Authors: Mhedi Belkoniene, Jennifer Socquet, Denise Njembafreiburghaus, Cyril Pellaton
    Abstract:

    Concern about intoxication by e-liquid is growing as calls to poison control centers have increased since their introduction. Only three cases of intoxication by Injection have been reported worldwide. Our case is unique because of the precise follow-up of a patient who survived a lethal dose of self-injected e-liquid, without other co-intoxication. A 51-year-old male presented to the Emergency Department after injecting himself intravenously (IV) in the forearm with 10 mL of e-liquid (1000 mg of nicotine diluted in propylene Glycol). An agitation phase was followed by coma and bradypnoea requiring mechanical ventilation. The patient developed a transitory neurological impairment with the appearance of tetraparesis, gaze palsy and myoclonus due to nicotinic syndrome. The arterial blood gas (ABG) analysis confirmed uncompensated lactic acidosis with an elevated anion gap, which is an expected effect of propylene Glycol. The toxicology screen indicated the presence of nicotine and cotinine in the blood and excluded the presence of concomitant intoxication. The patient recovered without sequelae. Even a small quantity of intravenous (IV) e-liquid can lead to an acute intoxication and fatal outcomes due to the toxic effects of nicotine. This case might help emergency doctors cope with acute intoxication by Injection of e-liquid and increase their comprehension of the two main substances, nicotine and propylene Glycol with overview of their pharmacodynamics and kinetic effects.

Yu Zhang - One of the best experts on this subject based on the ideXlab platform.

  • experimental investigation of production behavior of methane hydrate under ethylene Glycol Injection in unconsolidated sediment
    2007
    Co-Authors: Gang Li, Xiaosen Li, Liangguang Tang, Yu Zhang
    Abstract:

    This article investigates the gas production behavior from methane hydrate (MH) in porous sediment by injecting ethylene Glycol (EG) solution with the different concentrations and the different Injection rates in an one-dimensional experimental apparatus. The results suggest that the gas production process can be divided into the four stages: (1) the initial Injection, (2) the EG diluteness, (3) the hydrate dissociation, and (4) the remained gas output. Nevertheless, the water production rate keeps nearly constant during the whole production process. The production efficiency is affected by both the EG concentration and the EG Injection rate, and it reaches a maximum with the EG concentration of 60 wt %.

Zhiliang Gao - One of the best experts on this subject based on the ideXlab platform.

  • diethylene Glycol poisoning and liver function following accidental diethylene Glycol Injection
    2012
    Co-Authors: Chaoshuang Lin, Qingxian Cai, Zhanlian Huang, Bingliang Lin, Yutian Chong, Zhixin Zhao, Zhiliang Gao
    Abstract:

    The aim of the present study was to investigate the hepatotoxic effects of accidental intravenous diethylene Glycol (DEG) poisoning in patients with liver disease. Clinical manifestations were recorded and liver function tests were carried out for 64 patients with liver disease who had been accidentally treated intravenously with DEG. Comparisons were made between the poisoned and non-poisoned groups. Of the 64 cases with preexisting liver disease, 15 cases (23.4 %) developed toxic presentations after exposure to DEG. All cases were men. Twelve of the 15 poisoned patients (80 %) died within seven days. The intravenous administration of DEG resulted in only mild liver function impairment. Gender (p = 0.039) and the severity of jaundice prior to DEG administration were risk factors related to the occurrence of toxin-induced renal failure (p < 0.006). The results suggest that DEG may worsen liver damage in patients with preexisting liver disease. However, our study demonstrated only mild, transient alterations in patients' baseline liver functions. Severe liver damage secondary to DEG was only occasionally seen in patients with concomitant renal failure.

  • original article diethylene Glycol poisoning and liver function following accidental diethylene Glycol Injection
    2012
    Co-Authors: Chaoshuang Lin, Qingxian Cai, Zhanlian Huang, Bingliang Lin, Yutian Chong, Zhixin Zhao, Zhiliang Gao
    Abstract:

    The aim of the present study was to investigate the hepatotoxic effects of accidental intravenous diethylene Glycol (DEG) poisoning in patients with liver disease. Clinical manifestations were recorded and liver function tests were carried out for 64 patients with liver disease who had been accidentally treated intravenously with DEG. Comparisons were made between the poisoned and non-poisoned groups. Of the 64 cases with preexisting liver disease, 15 cases (23.4 %) developed toxic presentations after exposure to DEG. All cases were men. Twelve of the 15 poisoned patients (80 %) died within seven days. The intravenous administration of DEG resulted in only mild liver function impairment. Gender (p = 0.039) and the severity of jaundice prior to DEG administration were risk factors related to the occurrence of toxin-induced renal failure (p < 0.006). The results suggest that DEG may worsen liver damage in patients with preexisting liver disease. However, our study demonstrated only mild, transient alterations in patients’ baseline liver functions. Severe liver damage secondary to DEG was only occasionally seen in patients with concomitant renal failure.