I’m seeking information on policies, technologies, and equipment related to natural gas processing of condensate

I’ve never heard of it. There is a GTL technology, but it’s used for producing high-grade diesel. It exists abroad; it is said that the Chinese Academy of Petroleum Sciences has completed pilot tests for it, but industrial-scale production has not yet begun.

　　Project Overview  Naphtha aromatization refers to the process of using naphtha as crude oil, and through aromatization and separation, producing benzene, toluene, and xylene. 　　·Production scale and product portfolio Plant capacity: 100,000 tons per year. Product portfolio: 200# solvent oil – 14,100 tons per year; Benzene – 10,900 tons per year; Toluene – 19,800 tons per year; Mixed toluene – 13,900 tons per year; Liquefied gas – 25,000 tons per year; Heavy aromatics – 4,900 tons per year; Hydrogen-rich gas – 10,000 tons per year. · Advantages of Karamay Xinjiang boasts abundant resources of condensate oil. 2. Domestic production, consumption, and demand forecasts: Based on the characteristics of the products produced by this facility, a brief analysis is provided below regarding the market conditions for benzene, toluene, and p-xylene. 　　Benzene is an important chemical raw material, primarily used in the production of a wide range of derivatives such as styrene, isopropylbenzene, phenol, chlorobenzene, alkylbenzenes, ***, nylon-66 salts, aniline, cyclohexane, and maleic anhydride. In 2001, the world’s total production capacity for benzene reached 39.69 million tons, with a total output of 29.47 million tons. In 2002, China’s benzene production capacity was around 2.7 million tons, with a production volume of 2.13 million tons. In recent years, the consumption of benzene in our country has been increasing rapidly. In 2002, the apparent consumption of pure benzene in China reached 2.08 million tons, while the equivalent consumption exceeded 5 million tons. With the continuous development of the domestic chemical industry, the consumption of benzene is expected to grow at a rate of around 10% over the next 5 years. The actual domestic consumption of pure benzene will reach 3 million tons in 2007 and 4.8 million tons in 2015, respectively. Toluene is an important member of aromatic compounds and one of the basic raw materials in the petrochemical industry. Currently, the uses of toluene can be roughly divided into two categories: fuel-related and non-fuel related. In 2000, the global total production capacity for toluene reached 23.1 million tons, with a production volume of around 15.95 million tons. In 2002, China’s toluene production capacity was approximately 790,000 tons per year, with production amountsing to around 700,000 tons. Imports totaled 863,400 tons, while exports were 2,200 tons. The apparent consumption volume was 1,557,700 tons, meaning that China’s self-sufficiency rate in toluene was only 45%. It is estimated that by 2007, China’s demand for toluene will reach around 1.85 million tons, and by 2015 it will be approximately 2.18 million tons. p-Xylene is an important organic chemical product, mainly used in the production of purified terephthalic acid (PTA) or dimethyl terephthalate (DMT). In 2001, the world’s production capacity for p-xylene was 22.72 million tons per year, with a production volume of 18.71 million tons. In 2002, China’s production capacity for xylene was 1.69 million tons, while the actual output was 1.475 million tons. In 2002, China’s consumption of p-xylene was 1.714 million tons, which was primarily used in the production of PTA and DMT; these applications accounted for 95.5% of the total consumption in that year. The remaining 4.5% of p-xylene was used as a raw material for dyes and pesticides. It is predicted that the production capacity of PTA plants to be built in China during 2003–2007 will be 4.26 million tons per year. If part of this additional capacity is actually built, then the new PTA production capacity will amount to 4 million tons per year. It is estimated that China’s demand for p-xylene will be 4.25 million tons by 2007, with an average annual growth rate of 19.9% from 2002 to 2007. 3. Introduction to Process Technology · Current status and selection of process technology This project consists of an aromatization unit and an aromatic hydrocarbon extraction and separation unit. For this project, it is recommended to adopt the aromatization production technology developed by Luoyang Petrochemical Engineering Company or the Chinese Academy of Sciences. The aromatization unit includes a reaction system, an absorption and stabilization system, and a catalytic regeneration system. The process is as follows: The condensate oil undergoes preheating and vaporization before entering the feed heater, and after reaching the desired reaction temperature, it enters the top of the aromatization reactor. The reaction operating conditions are: inlet temperature of 530°C, outlet temperature of 480°C, and pressure of 0.55 MPa (A). The reaction product exiting the aromatization reactor is heat-exchanged with the feed oil, followed by gas-liquid separation and flashing. It is then sent to the desorption tower. The material at the bottom of this tower is pumped to the feed heater of the stabilizer using a feed pump, heated to 162°C, and subsequently fed into the stabilizer. The stabilizer feed enters the stabilizer; the liquefied gas at the top of the tower is condensed to 40°C using a condenser at the top of the stabilizer, after which it enters the stabilizer reflux tank. The condensate is pumped out by the stabilizer reflux pump, with a portion being fed to the top of the tower as reflux. Another part serves as a product delivery device. After passing through the stabilizer feed heat exchanger, the stabilized gasoline at the bottom of the stabilizer is cooled to 40°C in a stabilized gasoline cooler; one portion of this gasoline is sent out of the plant as feed oil for the extraction unit, while another portion is pumped by the stabilizer bottom pump into the absorption tower as a circulating absorbent. The heat source for the stabilizer reboiler is the high-temperature aromatization reaction products. The regeneration system regenerates the catalyst after reaction through coking, allowing it to return to the aromatization reaction system. The material exiting the aromatization system is sent to the aromatic extraction unit, which consists of three units: aromatic extraction, clay purification, and aromatic distillation. In this unit, the aromatics extracted in the aromatic extraction stage are subjected to adsorption treatment in a clay column to remove any trace amounts of olefins, and then separated and refined in benzene, toluene, and xylene columns to produce the final product. 　　·Required amount of main raw materials Raw material consumption table Name, Unit, Annual consumption: Condensate oil, tons – 1.0×105. 4. Utility services and construction requirements · Requirements for water, electricity, and steam Utility requirements table Name, Unit, Annual consumption: Fresh water, tons – 0.84×104; Recycled water, electricity, fuel gas, kW·h – NM3 – 0.52×107; 0.67×107; 1.30×107. · Construction period The construction period for the facility is 1.5 years. 5. Capacity and floor area: The capacity is 60 people, and the facility covers an area of approximately 2000 m2. 6. Investment and Static Benefit Estimation 　　Key Economic Indicators 　　Serial Number 　　Item 　　Unit 　　Indicator Value 　　1 　　Total Investment (10,000 yuan) 　　15,000 　　Of which: Capital Investment (10,000 yuan) 　　12,000 　　2 　　Average Annual Sales Revenue (10,000 yuan) 　　23,000 　　3 　　Average Annual Total Profit and Tax (10,000 yuan) 　　3,000 　　4 　　Average Annual Profit (10,000 yuan) 　　2,000 　　5 　　Return on Investment (%) 　　19.06 　　Profit Margin on Investment (%) 　　13.37 　　Investment Payback Period (years) 　　5.6 　　Last edited by zhenghemqx on 2009-4-17 12:05]

The new process for removing sulfur from natural gas condensate using N-formylmorpholine has passed the acceptance test. Recently, the project funded by the Ministry of Science and Technology under its Innovation Fund for Small and Medium-sized Technology-based Enterprises – namely, the new process for removing sulfur from natural gas condensate using N-formylmorpholine – was subjected to an expert evaluation in Chengdu, organized by the Chengdu High-Tech Zone on behalf of the Ministry of Science and Technology. Experts believe that this technology is the first of its kind in China, with all technical specifications meeting or exceeding the requirements stipulated in the contract. It is understood that the condensate oil obtained from natural gas contains hydrogen sulfide, sulfur dioxide, thiophenes, thiolues, sulfides, and polysulfides, among other substances. Not only is it highly malodorous and pollutes the environment, but it also does not meet the required standards for use; therefore, the condensate oil must be desulfurized before it can be released onto the market. Various gasoline desulfurization methods used in industry in the past, such as catalytic oxidation, adsorption, and oil purification, have limitations such as corrosion and pollution. To make full use of natural gas condensate resources and convert them into gasoline that can be used on its own, in 2001 our institute carried out research on a new desulfurization process using N-formylmorpholine, which is produced internally, as the extractant. Pilot-scale tests yielded satisfactory results: the sulfur content in the treated condensate was ≤35 mg/L, which is below the sulfur content limit specified in standard GB9053-1998; moreover, the copper sheet corrosion test showed that the product met the requirements for use as gasoline. In 2003, the company submitted an application for this project to the Ministry of Science and Technology for funding under the Innovation Fund for Science-and-Technology Small and Medium-sized Enterprises. In 2004, the application was approved by the Ministry. In 2005, a pilot plant for the desulfurization of natural gas condensate with a capacity of 100 tons per year was built in Jiangyou, Sichuan. Tests were conducted over two months on various parameters such as the solvent ratio, operating temperature, pressure, gas flow rate, and regeneration process, and good desulfurization results were achieved. Upon analysis, the sulfur content in the desulfurized condensate is <20 mg/L, meeting the standards for gasoline use. The recovery rate of the condensate is ≥95%, the recovery rate of the solvent N-formylmorpholine is ≥99.8%, and the total sulfur content in the recovered solvent is ≤2%. The corrosion level on copper sheets is grade 1; all these technical parameters meet or exceed the standards specified in the contract issued by the Ministry of Science and Technology. This post was last edited by zhenghemqx on 2009-4-17 22:00]