Shanxi to Construct a 160 kt/a Benzene Unit and a 100 kt/a Maleic Anhydride Unit

The 160 kt/a raw benzene unit and 100 kt/a maleic anhydride unit of Taiyuan Qiaoyou Chemical Co., Ltd., in which the investment totals 400 million RMB, will be located in Taigu, Shanxi province. The purification of 160 kt/a of raw benzene will adopt the coker benzene refining/extraction technology developed by this company in collaboration with Tianjin University. Compared to the conventional process for acid treating, purification and rectification of benzene, this process, which is an en…     

Zhongjie Petrochemical Company Commissioned a 30kt/a MEK Unit

A 30kt/a MEK unit,in which Hebei Zhongjie PetrochemicalCompany has invested 280 million RMB,has been put onstream.The Zhongjie Petrochemical Company in collabora-tion with the Hefei No.3 Research Institute of Chemical In-     

Nanjing to Construct a New 1.0 Mt/a Ethylene Project

The technical revamp of methylamine and DMF unit, in which the Jiutian Fine Chemicals Company in Anyang, Henan province had invested 10 million RMB in 2005, will be completed soon. The production capacity of both methylamine and DMF will reach 30 kt/a. In 2003 the Jiutian Fine Chemicals Company applied the proprietary technology of Hualu Co. ＂gas phase catalysis of methanol and liquid ammonia＂ and technology of one-step reaction with CO licensed by British KPT Co. to construct a 10 kt/a methylamine unit and a 10 kt/a DMF unit and put them on stream.     

Nanjing to Construct a New 1.0 Mt/a Ethylene Project

Currently, Nanjing boasts two ethylene units, namely the 650 kt/a unit at Yangzi Petrochemical Company and the 650 kt/a unit at Yangzi-BASF JV Company. In order to accelerate the development of ethylene industry, Nanjing city is planning to construct a 1.0 Mt/a ethylene project in Xibatou of Nanjing Chemical Park. It is learned that this project will be incorpo- rated with Yangzi Petrochemical Company, and the proposal on construction of ethylene project is awaiting the approval by the…     

Yumen Oilfield to Construct a 100 kt/a Methanol Unit

PetroChina Yumen Oilfield Administration has started construction of a 100 kt/a methanol unit in Yumen. The feasibility study report for this project had been submitted in September 2004 and plan for this project was approved by PetroChina     

Chongqing Intends to Construct a 850kt/a Methanol Unit

Chongqing Chemical and Pharmaceutical Holding Co. willcooperate with Mitsubishi Gas Chemical Company to invest1.65 billion RMB in an 850-kt/a methanol project. Currentlythis project had been approved by the State Developmentand Reform Commission. According to the agreement signedbetween two sides, the ratio of stakes between the Chinesecompany and Mitsubishi Gas Chemical Company is 49:51.This plant will be located on site the Chongqing Sichuan DyeChemical Complex in Changshou Chem…     

Evaluation of a bacteriocin-producing strain of Pediococcus acidilactici as a biopreservative for “Alheira”, a fermented meat sausage

This study was conducted to evaluate the ability of Pediococcus acidilactici HA-6111-2, a PA-1 bacteriocin-producing lactic acid bacterium (LAB), isolated from “Alheira” to inhibit a cocktail of Listeria innocua strains during production and shelf-life of these products. The bacteriocinogenic culture reduced the Listeria population below the detection limit (1.5log CFU/g) and had no effect on the growth of the natural LAB flora or on the pH. Pathogenic organisms were not detected in any sample. The presence of some virulence factors and antibiotic resistances of the strain to be used as a bioprotective culture were investigated. P. acidilactici HA-6111-2 did not produce any of the biogenic amines tested; no formation of biofilms was observed; more l(+)lactic acid was produced than its isomer d(?); no gelatinase, DNase or lipase activity was recorded; no structural genes for the haemolysin, enterococcal surface protein, hydrolytic compounds, aggregation protein and cell-wall adhesins were detected, no significant antibiotic resistances were found. P. acidilactici HA-6111-2 appears to have potential as a bioprotective culture during “Alheira” fermentation. Moreover, a trained panel considered the protected product to be sensorially acceptable.     

Linde AG to License a 300 kt／a Low-Pressure Methanol Synthesis Unit

Hangzhou Liode Chemical Technology Engineering Company, Ltd. signed with Dalian Chemical Group Company an agreement on license of technology and fabrication of equipment for a 300 kt/a low-pressure methanol unit.     

When does a longer shut-in lead to a larger radius of investigation?

While the concept of radius of investigation is better understood for drawdown tests, its applicability to buildup tests is less certain. For example, a rule of thumb is that “one cannot see a particular feature in a buildup unless the radius of investigation during the preceding flow period has seen that feature”. In this paper, we clearly illustrate that the radius of investigation of a buildup can be larger than that of its previous flow period.Another common contention is that the radius of investigation of a buildup is limited by noise dominating the late-time pressure behavior. Oliver [Oliver, D.S., 1990. The averaging process in permeability estimation from well-test data. SPEFE. pp. 319–324.] and later Thompson and Reynolds [Thompson, L.G. and Reynolds, A.C, 1997. Well testing for radially heterogeneous reservoirs under single and multiphase flow conditions. SPEFE. pp. 57–64.] defined the radius of investigation based on the distance from the well to the region of the reservoir which has the greatest impact on the pressure derivative. We have used this approach to calculate the derivative and show that the ratio of noise to the signal from the reservoir does not necessarily increase. While many situations exist when radius of investigation of a build-up test is limited by the preceding flow period and noise, we show that when data is sampled appropriately, the radius of investigation of a buildup can easily go beyond that of the preceding flow period, and demonstrate when this may remain unaffected by noise.     

Huludao of Liaoning Province to Construct a 100kt/a TDI Project

China Weaponry Industry Corporation and Liaoning HuludaoMunicipal Government had clinched an agreement on Octo-ber 17, 2004 to cooperate in construction of a TDI project.Both sides intended to construct a 100 kt/a TDI project. Thesize of first phase project will be 50 kt/a TDI with a totalinvestment of 960 million RMB. The construction of thisproject will be commenced in April 2005 and startup of theunit is slated for the end of 2006. By that time Huludao citywill become a chemical…     

Wax Diffusivity: Is It a Physical Property or a Pivotable Parameter?

Abstract

In order to predict wax deposition problems the key parameter is the wax diffusion coefficient. While it is quite easy to find measured diffusivity values for well-defined compounds at quite low concentrations, very few experimental data are available for wax diffusivity in oil. Most of the literature data are estimated by interpolating experimental data obtained by loop tests and then they are affected by a noticeable uncertainty. In fact this parameter collects the whole uncertainty of the test and the paradoxical situation is that the key parameter ends to be the most error-affected or to be used as a pivotable parameter in “predictive” models. This article describes an experimental procedure to determine the overall diffusivity coefficient of waxes into the oil; the main advantage of this technique is that it allows the direct measure of diffusivity on the oil. Besides it is a very simple and straightforward technique. Results obtained were used to gain insight into the deposition process; the conclusion was that, due to the counter-intuitive diffusivity dependence on temperature, it is likely that noncompositional models available at present are structurally incorrect.     

HFC-134a反应器制造

介绍了大直径不带法兰的立式列管固定床HFC-134a反应器的特点、关键的制造工艺要求、INCONEL 600合金复合板封头的成型以及INCONEL 600合金堆焊管板的加工工艺.在管束组装中采用先测量上、下管板间距,再确定换热管长度,然后穿换热管并组焊的工序,降低了管束组装的难度,提高了工作效率.     

Blue Star to Construct a 30 kt／a Butadiene Extraction Unit in Tianjin

China Blue Star Corporation signed in Beijing an agreement on license of butadiene extraction unit by ABB Lummus of USA and BASF of Germany. This project will apply BASF's proprietary technology of N-methylpyrrolidone for a 30 kt/a butadiene extraction unit while demolishing the existing gas     

Construction of a 80 kt/a Styrene Unit at Blue Star Daqing Branch Company

The construction of a 80 kt/a styrene unit was kicked off in July 2007 at the Blue Star Daqing Branch Company. This project will adopt the third generation process for manufacture of ethyl benzene via catalytic alkylation of benzene with dry gas developed by the CAS Dalian Institute of Chemical Physics arid the process for manufacture of styrene via d hydrogenation of ethyl benzene jointly developed by the SINOPEC Shanghai Petrochemical Research Institute, the East China University of Science and Technology and the Shanghai Pharmaceutical Design Institute,     

大庆50 kt/a ABS装置扩能至105 kt/a的改造

采用自行开发的具有国际先进水平的ABS生产技术对50 kt/a ABS装置进行扩能改造,通过对干燥器、齿轮泵、其他配套设施的改造和增加附聚釜、脱水机、SAN聚合釜、挤出机等设备,使ABS装置生产能力由50 kt/a提高到105 kt/a.     

5万t/a丙烯腈、3万t/a腈纶项目即将建成投产

由中国石化集团公司、江苏省及南京市合资建设的金陵石化公司５万ｔ／ａ丙烯腈、３万ｔ／ａ腈纶化工化纤联合工程将建成投产。该项工程总投资约３０亿元,由中国石化兰州设计院、中国纺织工业设计院和金陵石化设计院联合设计。丙烯腈装置引进美国石油公司专利技术,采用先进的国产ＭＢ８６型催化剂,少量关键设备国外引进。腈纶装置引进国外先进的两步法湿法纺丝工艺,主要设备国外引进,其余设备国内配套。主要生产原料丙烯、液氨及电力、蒸汽等均由金陵石化司提供。5万t/a丙烯腈、3万t/a腈纶项目即将建成投产@江镇海