Optimization of Rectisol Process Flow

Jiang Xiaowei, et al

State Equation of Non-Aqueous Electrolyte Solution

Han Zheng

Coupling Study on Dehumidification and PM2.5 Removal

of Gas - Liquid Cross-Flow Array

Lan Yun, et al

Discussion on Safety Design of Butadiene Storage Tank

Li Zhao

Coal Water Slurry Gasifier Layout and Piping Design

Yang Liu

Piping Design of Safety Valve

Xie An’guo

Key Technical Points of Offside B.L. Piping Design

Shao Ying

Analysis and Improvement of Flash Tank Level Gauge

Zhang Linmao

Analysis on No Additional Reinforcement Requirements

for Pressure Vessel Shell Openings

Wu Mengchu

Application of Differential Protection in SABIC PCQ-2 Project

Mu Dan

Study on Revamping of Wet Flue Gas Desulfurization Wastewater

Extraction System of a Thermal Power Plant

Wang Huayang

Analysis and Implementation of Multi-Currency Financial Accounting

System based on SPMat Project Procurement Supply Chain

Liang Weimin

S

Optimization of Rectisol Process Flow

Jiang Xiaowei, et al

(BeijingPetrochemicalEngineeringCo.,Ltd.Xi'anBranch,Xi’an710075)

Cooling consumption and power consumption is an important indicator of energy consumption of Rectisol unit. This paper uses the Rectisol simulation program to optimize the process flow. On the basis of ensuring the reliable technology and stable operation, under the premise of satisfying the process indicator of purified gas and the production requirement of Claus gas as well as the standard of exhaust emission, the optimized Rectisol process has the advantages of high effective gas recovery rate, low operating cost, high H2S concentration in Claus gas, energy saving and environment friendly etc., which can provide a reference for the future optimization of Rectisol process flow.

Rectisol optimization simulation refrigerating capacity

State Equation of Non-Aqueous Electrolyte Solution

Han Zheng

(ChinaHuanqiuContracting&EngineeringCorporation,Beijing100029)

In this paper, a non-aqueous electrolyte solution with methanol as solvent is used to study the state equation which can accurately describe the thermodynamic properties of non-aqueous electrolyte solution. This state equation includes two adjustable parameters. The equation of state maintains a good predictive power for the thermodynamic properties of non-aqueous electrolyte solutions at different temperatures and molarities without changing the adjustable parameters. The Helmholtus free energy in the equation of state is calculated by the perturbation theory. The solving process of the vapor pressure and solvent activity of the non-aqueous electrolyte solution is also described in detail.

Key words non-aqueous electrolyte solution state equation thermodynamics

Coupling Study on Dehumidification and PM2.5 Removal

of Gas - Liquid Cross-Flow Array

Lan Yun, et al

(SichuanUniversity,Chengdu610065)

In this paper, aiming at the characteristics of industrial exhaust gas with high humidity and difficult removal of PM2.5, a new method for removing PM2.5 from exhaust gas-wastewater multiphase cross-flow array is proposed. The exhaust gas flowing across liquid membrane column array, steam condensing drives PM2.5 to move to gas-liquid Interface. So that all the liquid column arrays become independent dehumidification and separation unit for PM2.5 removal and form series-parallel structure, the separation unit to establish water vapor and PM2.5 particle mass transfer differential equation, the particle removal rate is in direct proportion to water vapor mass transfer flux, deriving the exhaust condensate dehumidification and PM2.5 removal efficiency. The theoretical analysis shows that the removal efficiency of PM2.5 particles is proportional to the amount of water vapor removal, and the cross flow array inlet tail gas T=100℃, H=0.626kg/kg, gas-liquid interface Tw=20℃, 100-row cross-flow array form series - parallel structure of liquid membrane column group moisture removal, PM2.5 removal efficiencies are respectively 96% and 70%. The experiment of 20 (column)×100 (row) cross flow array is carried out, and the experimental value is slightly larger than the theoretical value.

Key words condensation dehumidification cross flow removal efficiency

Discussion on Safety Design of Butadiene Storage Tank

Li Zhao

(ChinaChengdaEngineeringCo.,Ltd.Chengdu610041)

This paper briefly describes the dangerous characteristics of butadiene, and mainly introduces the safety measures in process system design of butadiene storage tank, such as the provision of cooling facilities, safety relief devices and water injection lines etc..

Key words butadiene spherical tank temperature reducing safety relief water injection measure

Coal Water Slurry Gasifier Layout and Piping Design

Yang Liu

(BeijingPetrochemicalEngineeringCo.,Ltd.Xi'anBranch,Xi’an710075)

Based on the specific project situation, this paper introduces the characteristics of coal-water slurry gasifier and gasification process, analyzes the design difficulties of gasifier and its burner from equipment layout to relevant piping layout, and puts forward some reasonable suggestions.

Key words coal-water slurry gasifier burner layout piping

Piping Design of Safety Valve

Xie An’guo

(ChinaChengdaEngineeringCo.,Ltd.Chengdu610041)

This paper discusses various factors in piping design such as the classification, selection, piping design requirements, piping design method, piping and pipe support design as well as calculation of discharge reverse thrust, so that the safety valve and piping design can be more optimized, safer and reasonable.

Key words safety valve piping piping resistance reverse thrust

Key Technical Points of Offside B.L. Piping Design

Shao Ying

(ZhejiangEngineeringDesignCo.,Ltd.Hangzhou310002)

This paper introduces the role of offside B.L. piping design in petrochemical enterprises, and expounds the key technical points of design work of pipe laying, piping system setting, valve setting, material selection and other special requirements for designers' reference.

Key words offside B.L. piping design key technical points

Analysis and Improvement of Flash Tank Level Gauge

Zhang Linmao

(HenanEnergyandChemicalGroupZhongyuanDahuaCompany,Puyang457000)

Several product quality accidents occurred in a melamine plant of a company. The flash tank level indicator distortion causing gas phase entrained with liquid is one of the main causes of the accident, in order to avoid accidents, several improvements are made to the level gauge to solve the problem of liquid level indicating distortion, which ensures the stable operation of the plant.

Key words melamine flash tank level gauge

Analysis on No Additional Reinforcement Requirements

for Pressure Vessel Shell Openings

Wu Mengchu

(NorthwestUniversity,Xi’an710075)

In order to meet the requirements of process operation, vessel manufacturing, installation, inspection and maintenance, opening in the pressure vessel is inevitable, thus the opening reinforcement is an important part of the design and calculation of the pressure vessel. In the "Pressure Vessel" GB150.3-2011 section 6.1.3 gives the requirements of no additional reinforcement for pressure vessel shell openings. This paper provides an in-depth analysis of the requirements in the standard to help pressure vessel engineering designers better understand the content of the standard.

Key words pressure vessel opening no additional reinforcement requirement

Application of Differential Protection in SABIC PCQ-2 Project

Mu Dan

(ChinaChengdaEngineeringCo.,Ltd.Chengdu610041)

Differential protection is a very reliable protection device, which is widely used in bus protection, line protection, transformer protection and other fields. In this paper, based on the practical application of the differential protection device in the SABIC PCQ-2 project, the working principle, basic setting and characteristic of several differential protection devices are expounded.

Key words differential protection percentage differential protection differential current resistant current magnetizing inrush current

Study on Revamping of Wet Flue Gas Desulfurization Wastewater

Extraction System of a Thermal Power Plant

Wang Huayang

(ShenhuaFujianEnergyCompanyLimited,Quanzhou362712)

According to the requirements of design and operation of wet flue gas desulfurization process system and its supporting desulfurization wastewater system of a thermal power plant, starting with the desulfurization wastewater extraction system, this paper carries out the analysis and design optimization. Under the premise of meeting the requirements of desulfurization wastewater discharge code and standard, reducing the chloride concentration of slurry inside the upstream desulphurization absorption tower, turning down the operating load of downstream desulfurization wastewater treatment process system and reducing the running failure rate of the entire flue gas desulfurization process system, thereby improving the economical efficiency of desulfurization system of the power plant.

Key words desulphurization wastewater COD chloride thermal power plant technical innovation design

Analysis and Implementation of Multi-Currency Financial Accounting

System based on SPMat Project Procurement Supply Chain

Liang Weimin

(WisonEngineeringCo.,Ltd.Shanghai201210)

This paper focuses on the financial accounting management practice of EPC material supply chain of engineering company. It aims to cooperate with reasonable application of engineering procurement supply chain management software (SPMat) and materials management information system through engineering projects, especially overseas project supply chain material flow, capital flow and main data resource management database. This paper details the scheme analysis and implementation points of a multi-currency financial accounting system based on SPMat platform for EPC project procurement supply chain.

Key words project procurement project financial accounting system architecture scheme analysis implementation points

(TranslatedbyLuLang)