从蒸汽裂化C5原料制备C5烯烃

包括使包含环戊二烯、c5烯烃、和C6以上烃的混合烃物流在二聚反应器中反应，环戊二烯二聚为双环戊二烯，将二聚反应器流出物分离为包含C6以上烃和双环戊二烯的第一馏分和包含c5烯烃和c5二烯烃的第二馏分。可以将第二馏分、饱和烃稀释剂物流和氢进料至催化蒸馏反应器系统，以同时将c5直链烯烃与饱和烃稀释剂、在第二馏分中含有的c5环烯烃和c5二烯烃分离；并且将c5二烯烃选择性加氢。从催化蒸馏反应器系统中回收包含c5直链烯烃的塔顶馏分和包含c5环烯烃的塔底产物。

来自蒸汽裂化和/或催化裂化的C3烃馏分的选择性氢化催化剂

蒸汽裂化和/或催化裂化的C3烃馏分的选择性氢化催化剂。包含由钯构成的活性相和包含至少一种选自二氧化硅、氧化铝和二氧化硅氧化铝的耐高温氧化物的多孔载体的催化剂,其中:催化剂中的钯含量为相对于催化剂的总质量计,质量分数为0.0025%~1%;至少质量分数为80b的钯分布在多孔载体外周处的壳层中,所述壳层的厚度为25~500μpm;多孔载体的比表面积为1~50 m^2/g;钯的金属分散度为小于20%。

Large Pyrolysis Gas Compressor Successfully Developed in Shenyang

The Shenyang Air Blower （Group） Company, Ltd. has developed the large pyrolysis gas compressor （type H598） with independent intellectual property rights. The compressor train rated at 640 kt/a of ethylene is composed of a triple cylinder joint movement structure and is specially designed for the steam cracking unit at Maoming Petrochemical Co. Currently this compressor has been shipped to Maoming. The test run of the compressor has shown that the high-, medium- and low-pressure cylinders worked normally in terms of their mechanical movement and performance. The vibration values at all vibration testing points were below 20μ,

SINOPEC Zhenhai Refining and Chemical Company to Construct a 1.0 Mt/a Steam Cracking Unit

SINOPEC Zhenhai Refining and Chemical Branch Company intends to invest 20 billion RMB (2.4 billion US dollars) to construct in 2010 in Ningbo, Zhejiang province a largest in China petrochemical integrated unit, including a 1.0 Mt/a ethylene unit. The proposal on construction of this project is awaiting the approval by the Central Govemment. It will take three years to execute the project construction.

Technology for Forced Heat Transfer in Steam Cracking Furnace Tubes Developed by CAS Institute of Metals

The technology for forced heat transfer in steam cracking furnace tubes invented by the CAS Institute of Metals has been successfully applied within the SINOPEC system and was granted the SINOPEC＇s first grade Award on Science and Technology Advancement in 2006.

Zhenhai Refining and Chemical Company Intends to Construct a New 800 kt/a Steam Cracking Unit

SINOPEC plans during the “11th Five-Year Plan” period to construct a 800 kt/a steam cracking unit at Zhenhai Refining and Chemical Company. SINOPE has approved the proposal on construction of this unit, which is scheduled for startup by 2008 or 2009. Zhenhai Refining and Chemical Company is located in Zhejiang province and is a giant domestic

Maoming Company Completed the Construction of 1.0 Mt/a Ethylene Production Base

The core of the 1.0 Mt/a ethylene revamp project the 640 kt/a steam cracking unit at SINOPEC Maoming Branch Company after its mechanical completion in July 2006 has been in the phase of production preparations in a bid to boost the design ethylene capacity from 360 kt/a to 1.0 Mt/a to become the first in China 1.0-Mt/a-class ethylene base.

Maoming Gravity Company Successfully Developed the 150 kt/a Steam Cracker Convection Section

Eight steam cracker convection sections with a treating capacity of 150 kt/a each successfully developed and fabricated by the Maoming Petrochemical Machinery Manufacturing Company, Ltd. have been tested and inspected prior to delivery to the 1.2 Mt/a ethylene project site at Dushanzi Petrochemical Company in Xinjiang Uygur Autonomous Region.

Yanshan Petrochemical Company Enhances Heat Transfer Through Developing Pyrolysis Furnace Tubes Equipped with Twist Blades

In the course of steam cracking the furnace tubes are apt to coking inside the tube wall, which not only can affect the heat transfer efficiency of the furnace, but also needs regu-lar shutdown for decoking that can reduce the operating

Capacity of the Third Steam Cracking Unit at China Petroleum Company of Taiwan Province will be Expanded to1.0 Mt/a

The Board of Directors of China Petroleum Company of Taiwan province has ratified the plan for onsite revamp of the third steam cracking unit, intending to construct a naphtha cracking unit to produce 1.0 Mt/a of ethylene and 600 kt/a of propylene. Construction is expected to be commenced in January 2005, and mechanical completion and commissioning of facilities are slated for the end of 2009, and official startup is scheduled in 2011.

Technology for Online Optimization of Steam Crackers Passed Appraisal

The project “Online Optimized Operation of Steam Cracker Based on Data Searching Technique” implemented jointly by SINOPEC Tianjing Petrochemical Company, SEI and Beijing Chemical University has recently passed in Beijing the appraisal on scientific and technical achievements organized by China Petroleum and Chemical Industry Society.

Beijing SBL Co. Has Developed Oil-soluble Additive for Suppressing Formation of Yellow Oil

The technical project relating to the pilot-scale manufactured oil-soluble product--the yellow oil inhibitor used in steam cracker,which is performed by the Beijing SBL Science&Technology Co.,Ltd.,has passed the experts’acceptance tests sponsored by Beijing Municipal Science and Technology Commission.This achievement is regarded as an innovative attempt in the world.This product

Fushun Petrochemical Company to Construct 800 kt/a Steam Cracking Unit

PetroChina Fushun Petrochemical Company has rejected a plan to expand the existing 148 kt/a steam cracking unit to 190 kt/a, while intending to construct a 800 kt/a steam cracking unit. The feasibility study is underway and will be submitted after its completion to relevant government departments. The steam crackers will run on naphtha, and their

Yangzi-BASF Successfully Commissioned Steam Cracking Unit and MEG Unit

The 600kt/a steam cracker and 300kt/a ethylene glycol(MEG)unit owned by Yangzi-BASF Company,a joint venture be-tween SINOPEC Yangzi Petrochemical Branch Company andBASK have been successfully put on stream.The steamcracker has been operating smoothly since its startup。

Proposal on “Use of LPG as Steam Cracking Feedstock” Raised by the Research Institute of Yangzi Petrochemical Company

The Research Institute of Yangzi Petrochemical Company （YPC） has completed the study on the project ＂Use of LPG as Steam Cracking Feedstock＂ and raised a rationalization proposal. The forecast has shown that the economic benefits for production of ethylene brought about by the hydrocracker LPG are enormous. Compared to the naphtha feedstock currently used by YPC, the economic benefit for manufacturing one ton of ethylene from LPG can be higher by 800 RMB. If the annual consumption of LPG amounts to 220 thousand tons,

利用农业副产品生产饲料

加拿大安达略(Ontario)地区的一家小工厂研究出两种利用农业副产品生产淀粉的方法,通过加工,淀粉既可作饲料,也可用作化工的重要中间产品。 第一种方法的主要原料是木材、谷物秸秆、蔗渣、棉籽绒或其他任何同类纤维。使用一种连续运转的专门设备,经过简单的蒸汽裂化工序(vapocraquage),把木质性杂质的纤维素分离出去。这种方法生产的饲料不仅品味质量好,而且反刍家畜消化良好。

Catalytic cracking of 1-butene to propylene by Ag modified HZSM-5

Silver modified HZSM-5 （AgHZ） zeolite catalysts were prepared by ion exchange method and their catalytic properties in the l-butene cracking reaction were measured. The catalysts were characterized by infrared spec- troscopy with pyridine adsorption （Py-IR）, N2 adsorption and X-ray diffraction （XRD）. The effects of Ag loading and steaming treatment on catalytic performances were studied. It is found that the activity ofHT_SM-5 （HZ） catalyst significantly decreases with the steaming time, whereas AgHZ catalysts show stable activity in the steaming time of 24-48 h and their activities increase with the Ag loading. When the steaming time is 24-48 h, the yield of propylene over HZ catalyst significantly decreases, whereas it is stable over AgHZ catalysts. The AgHZ catalysts with Ag loadings of 0.28%-0.43% （by mass） show similar propylene yields （-30%）, which are higher than that over the AgHZ catalyst with a Ag loading of 0.55% （by mass）. These results indicate that the steam-treated AgHZ catalysts with optimum Ag loadings have higher yield of propylene and are more stable than the steam- treated HZ catalyst. The regeneration stability measurement in butene cracking also shows that the AgHZ catalyst steam-treated under a suitable condition has better stability than the HZ catalyst.