The improvement and analysis of the high‐pressure propane recovery process

Jiang, Hong; Zhang, Shijian; Jing, Jiaqiang; Cong, Zhu

doi:10.1002/apj.2246

Cited by 7 publications

(2 citation statements)

References 17 publications

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“…However, only one kind of natural gas composition is used for simulation research under a specific working condition in this paper, and no instructive law can be obtained. Jiang et al 12 analyzed the high‐pressure propane recovery process and its improved process using the comprehensive energy consumption calculation method. Under the condition that the propane recovery rate exceeds 99%, the effects of deethanizer pressure and feed pressure on the process energy consumption were studied.…”

Section: Introductionmentioning

confidence: 99%

Process improvement and heat integration of rich gas ethane recovery

Jiang

Gao

Yang³

2023

Asia-Pacific J Chem Eng

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The recovery of ethane from natural gas is an important measure to enhance the economic benefit and energy saving of oilfields. In the process of condensation, the gas‐rich ethane recovery process has the problems of high condensation, high methane content, difficult control of cold box pinch temperature, and high energy consumption. Based on the Recycle Split Vapor (RSV) process, two improved processes, Supplemental Rectification with Compression and Recycle Split Vapor (SRCR) and Recycle Split Vapor with Liquid Flashing (RSVL), are proposed. Energy consumption analysis shows that RSVL process has the lowest total compression power and lower investment cost than SRCR process. The heat integration analysis shows that the ratios R1 and R2 of the demethanizer side‐draw duty directly influence the temperature matching of the cold and hot streams in the main cold box. For rich gas, R1 is advised to set between .5 and .75, and R2 is advised to set between .6 and .8. The sensitivity analysis shows that the lower the feed gas pressure and the richer the gas, the higher the total compression power of the process, and the closer the composite curve of cold and heat in the main cold box. The higher the feed gas temperature, the greater the total compression power. The higher the CO2 content in the feed gas, the higher the total compression power of the RSVL process, and the smaller the CO2 freezing temperature in the demethanizer.

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Section: Introductionmentioning

confidence: 99%

Process improvement and heat integration of rich gas ethane recovery

Jiang

Gao

Yang³

2023

Asia-Pacific J Chem Eng

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“…This work aims to help the company in improving the quality and productivity of the paper manufacturing process. Furthermore, process improvement through waste management and valuable material recovery can make the manufacturing process environmentally friendly with very less ecological damage . The formulation of the above‐stated problem along with data description is presented in Section‐4.…”

Section: Introductionmentioning

confidence: 99%

Radial basis neural tree model for improving waste recovery process in a paper industry

Chakraborty

Chattopadhyay

Chakraborty

2019

Appl Stoch Models Bus & Ind

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In this article, we propose a novel hybridization of regression trees (RTs) and radial basis function networks, namely, radial basis neural tree model, for waste recovery process (WRP) improvement in a paper industry. As a by‐product of the paper manufacturing process, a lot of waste along with valuable fibers and fillers come out from the paper machine. The WRP involves separating the unwanted materials from the valuable ones so that the recovered fibers and fillers can be further reused in the production process. This job is done by fiber‐filler recovery equipment (FFRE). The efficiency of FFRE depends on several crucial process parameters, and monitoring them is a difficult proposition. The proposed model can be useful to find the essential parameters from the set of available data and to perform prediction task to improve WRP efficiency. An idea of parameter optimization along with regularity conditions for the universal consistency of the proposed model is given. The proposed model has the advantages of easy interpretability and excellent performance when applied to the FFRE efficiency improvement problem. Improved waste recovery will help the industry to become environmentally friendly with less ecological damage apart from being cost‐effective.

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Heat integration analysis based on recycle split vapor ethane recovery process

Jiang,

Liu,

Zhou

et al. 2024

Asia-Pacific J Chem Eng

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Recovering ethane from natural gas involves significant energy consumption. Globally, the recycle split vapor process (RSV) is widely adopted as an efficient method for ethane recovery. Nonetheless, one major challenge faced by the RSV process is the lack of adequate heat integration, despite its overall effectiveness. In this article, we investigate the heat integration of the RSV process and propose two novel ethane recovery processes: the recycle split vapor process with direct heat integration of the feed gas (RSV‐DTI) and the recycle split vapor process with split heat integration of the feed gas (RSV‐SHI). A comparative analysis is conducted among these three processes, focusing on integrated energy consumption, exergy efficiency, and economic investment. The study's findings reveal the following: (1) The RSV‐DTI process distinguishes itself with its reduced energy consumption, enhanced stability, and minimized refrigerant usage. In comparison to the RSV process, the RSV‐DTI process achieves a reduction of over 15% in total compression duty and a remarkable decrease of 68% in propane usage. (2) Electricity emerges as the predominant energy consumed in the ethane recovery process, and the RSV‐DTI process significantly improves upon this aspect. Notably, the RSV‐DTI process incurs the lowest investment cost, yielding a swift payback period of approximately 1 year for the plant. The characteristics of the RSV‐DTI process are investigated, and the effect of changes in feed gas conditions on the heat integration of the RSV‐DTI process is analyzed. The characteristics of the RSV‐DTI process show the following: (1) Different pressures of feed gas existing in the main cold box have different minimum heat integration temperatures (MHIT). When the feed gas temperature is lower than the MHIT, heat integration becomes difficult, and the heat energy can be supplied by hot liquid propane at 48°C. When the feed gas temperature is higher than the MHIT, changes in feed gas temperature have little effect on the process, only affecting the external gas temperature. (2) The heat transfer duty of the demethanizer sideline outlet stream is affected by the feed gas pressure. To enhance heat integration, it is recommended to set the heat transfer duty of the low‐temperature sideline outlet stream (DLTSS) between 40% and 90% of the reboiler duty and the heat transfer duty of the high‐temperature sideline outlet stream (DHTSS) between 40% and 75% of the reboiler duty.

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The improvement and analysis of the high‐pressure propane recovery process

Cited by 7 publications

References 17 publications

Process improvement and heat integration of rich gas ethane recovery

Process improvement and heat integration of rich gas ethane recovery

Radial basis neural tree model for improving waste recovery process in a paper industry

Heat integration analysis based on recycle split vapor ethane recovery process

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