scholarly journals Study on Liquid Phase Hydrogenation Technology of White Oil

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Tiezhen Zhang ◽  
◽  
Famin Sun ◽  
Yungang Jia ◽  
Fangming Xie ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Raw Materials ◽  
Copper Plate ◽  
Simulation Software ◽  
Quality Requirements ◽  
Food Grade ◽  
Ultraviolet Absorbance ◽  
Liquid Phase Hydrogenation ◽  
The Stability ◽  
Aromatic Hydrogen

Using Aspen Plus simulation software to simulate the hydrogen solubility of white oil raw materials, and calculate the de-aromatic hydrogen consumption. The liquid hydrogenation technology of white oil was studied by using 100mL uplink liquid hydrogenation evaluation device. The research results show that the ultraviolet absorbance of the liquid phase hydrogenation product is no more than 0.1, and saybolt color, copper plate corrosion, readily carbonizable substance can meet the quality requirements under the conditions of 230℃, 17 Mpa and LHSV 0.5 h-1. 2000 hours liquid phase hydrogenation test shows the stability of product quality which meets the food grade standard, and the liquid phase hydrogenation technology is feasible.

scholarly journals Gas-phase and liquid-phase hydrogenation of acetylene in lean and enriched mixtures over supported modified palladium catalysts

2019 ◽  
Vol 62 (1-2) ◽  
pp. 89-109 ◽  
Author(s):  
DV . Glyzdova ◽  
N.S . Smirnova ◽  
D.A . Shlyapin ◽  
P.G. Tsyrul’nikov
Keyword(s):  
Liquid Phase ◽  
Gas Phase ◽  
Selective Hydrogenation ◽  
Palladium Catalysts ◽  
Raw Materials ◽  
Liquid Phase Hydrogenation ◽  
Selective Hydrogenation Of Acetylene ◽  
Bimetallic Palladium

In the presented review the results of studies devoted to the selective hydrogenation of acetylene to ethylene over bimetallic palladium-containing catalysts are systematized. General regularities and peculiarities of the catalysts action in gas-phase hydrogenation of traces of acetylene in the acetylene-ethylene mixture obtained by pyrolysis of petroleum raw materials, as well as in the process of liquid-phase hydrogenation of mixtures enriched with acetylene and hydrogen are analyzed. The advantages of obtaining ethylene by hydrogenation of acetylene in the liquid phase are shown and ways of increasing the selectivity of this process are considered.

scholarly journals Liquid-Phase Respiration Activity Assays to Assess Organic Waste Stability: A Comparison of Two Tests

2018 ◽  
Author(s):  
Alexandros Evangelou ◽  
Dimitrios Komilis
Keyword(s):  
Solid Solution ◽  
Liquid Phase ◽  
Organic Waste ◽  
Oxygen Uptake Rate ◽  
Raw Materials ◽  
Organic Substrates ◽  
Respiration Activity ◽  
Specific Oxygen Uptake Rate ◽  
Set Up ◽  
The Stability

The stability of twenty seven composts and organic substrates (including raw, less stable and stable materials) was assessed using two different liquid phase tests were carried out. One of the tests was introduced in 1998 and was based on the calculation of a Specific Oxygen Uptake Rate (SOUR). The newly introduced liquid phase test presented here is simpler to set-up and to perform that the older liquid phase test. It is based on the quantification of oxygen consumption in the headspace of a BOD bottle that contains the liquid-solid solution. The results indicate that a marginal correlation does exist between the main indices calculated from both tests. The correlation was stronger for the indices calculated for stable-processed organics than for the raw (unprocessed materials). The SOUR ranged from 1520 to 3650mg O2/kg VS-h for the raw materials and from 110 to 1150 mg O2/kg VS-h for the processed materials, respectively. The corresponding stability rate related index (LSRI24) of the new liquid phase test introduced here ranged from 240 to 1180 mg O2/dry kg-h for the raw materials and from 64 to 792 mg O2/dry kg-h for the processed ones.

Insights into the Stability of Pd/CN Catalyst in Liquid Phase Hydrogenation of Phenol to Cyclohexanone: Role of Solvent

2019 ◽  
Vol 149 (11) ◽  
pp. 3087-3096 ◽  
Author(s):  
Xiang Zhang ◽  
Yan Du ◽  
Hong Jiang ◽  
Yefei Liu ◽  
Rizhi Chen
Keyword(s):  
Liquid Phase ◽  
Liquid Phase Hydrogenation ◽  
The Stability ◽  
Role Of Solvent

FUNDAMENTAL CAPITAL FINANCING OF PRODUCTION

2020 ◽  
Vol 8 (3) ◽  
pp. 74-78
Author(s):  
Farrux Zulfiyev ◽  
Keyword(s):  
Raw Materials ◽  
Economic Reforms ◽  
Equity Financing ◽  
Capital Financing ◽  
The Republic ◽  
The Stability

This article is based on the principles of shared financing of the production of raw materials. The article is aimed at financing the production of capital on the basis of equity in order to further strengthen the stability of economic reforms in the republic. At the same time, the essence of equity financing, the risks associated with it, and the efficiency of raw materials are covered

scholarly journals Study on instability failure mode and monitoring early warning standard of surrounding rock in fully weathered argillaceous sandstone section of large section tunnel

2019 ◽  
Vol 136 ◽  
pp. 04023
Author(s):  
Ming Zhao ◽  
Ke Li ◽  
Hong Yan Guo ◽  
KaiCheng Hua
Keyword(s):  
Limit State ◽  
Stable State ◽  
Simulation Software ◽  
Surrounding Rock ◽  
Large Section ◽  
Rock Stability ◽  
Geological Conditions ◽  
Construction Step ◽  
The Face ◽  
The Stability

Based on the special geological conditions of a tunnel in Qingyuan section of Huizhou-Zhanzhou Expressway, FLAC3d numerical simulation software is used to simulate the rheological properties and instability of surrounding rock in large-section fully weathered sandstone section, and the stability and loss of surrounding rock are analyzed. The deformation of the dome and the face at steady state is analyzed. It is found that: 1) when the surrounding rock is in a stable state, the deformation curve of the dome is smooth. When the surrounding rock of the face is unstable, the front of the face appears ahead. Deformation should be first strengthened on the surrounding rock in front of the face. 2) The arched foot is an important part of the instability of the surrounding rock. In order to prevent the expansion of the collapsed part, the arched part should be reinforced. 3) In order to obtain the limit state of surrounding rock stability, the strength of surrounding rock is reduced, and the strength reduction coefficient corresponding to the displacement sudden point is taken as the safety factor of rock stability around the hole, and the stability safety coefficients of surrounding rock of each construction step are greater than 1.2. 4) The dynamic standard values of deformation control in the whole construction stage are obtained by analyzing the deformation curves of each data monitoring point with time in the corresponding time period of each construction step.

Sign in / Sign up

Export Citation Format

Share Document