Word-2003设计文档1-2 Design Abstract

SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR electrical insulation, shock absorption, low water absorption and Low resilience, widely used in inner tubes, water tires, vulcanized capsules, wire and cable and waterproof membranes. Butyl rubber is the best rubber for the production of automotive inner tubes, especially for the production of radial tires, and is also an important raw material for the manufacture of medical corks and sealing products. In recent years, the butyl rubber industry is in a period of rapid development. It is expected that the world IIR capacity will reach 1.842 million t/a and 1.892 million t/a in 2020 and 2025. SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR the bottom of the column gives a mixed solution of methanol, water and certain isobutylene. After the crude isobutylene product was pressurized to 0.1 MPa by a compressor, water and methanol were removed through a rectification column (T0302) to obtain high-purity isobutylene (99.9%) at the top of the column. The mixed solution obtained from the bottom of the water washing tower enters the rectification column (T0303), the water is removed from the bottom of the column, the mixed solution of isobutylene and methanol is obtained at the top of the column, and then separated by a secondary rectification column (T0304), and the methanol obtained at the bottom of the column is further It is recycled to the MTBE synthesis and refining section for recycling, and high purity isobutylene (99.5%) is obtained at the top of the column. Mix two parts of high purity isobutylene. 3.4 Isoprene synthesis section Figure 3-4 Aspen Plus simulation of isoprene synthesis section A portion of the high purity isobutylene is preheated with formaldehyde from the tank zone and is fed to the reactor to synthesize isoprene. The obtained isoprene crude product was condensed to 10 in a condenser, and then passed to a rectification column where unreacted formaldehyde and isobutylene were removed. The isoprene containing a small amount of water was obtained at the bottom of the column, and was heated to 70 through a heat exchanger to enter a secondary rectification column, and an isoprene having a purity of 98.1% was obtained at the SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR the product enters the phase separation storage tank, the air is discharged from the top of the tower, the mixture of MMA, MAL and methanol is obtained at the bottom of the column, and the MAL and methanol discharged from the top of the column are extracted through the extractive distillation column. The mixture is recycled to the MAL refining section. The bottom of the tower obtains a mixture of MMA and water, which is cooled by a cooler and then enters the phase separation device to obtain MMA with a purity of 99.9% at the top, and the waste water discharged from the bottom is recycled to the upper-stage extractive distillation column for recycling. 4.Energy-saving Design 4.1Heat pump distillation In the refining process of the product isobutylene, the conventional rectification SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR the C4 pumped isobutylene directly comes from the main factory, which is convenient and quick; the three waste treatment and public works have supporting industry supply; the park also receives the governments policy support and financial support. Focus on the healthy and sustainable development of the industry. SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR& 25.000 TONS OF MMA FROM ISOBUTYLENE COPRODUCTION PROJIC LilacLilac TeamTeam ofof ThreeThree GorgesGorges UniversityUniversity 14 6.2 Plant arrangement According to the concept of the separation between man and vehicles, the general layout sets traffic channel and personnel access to reduce traffic resistance. With the parallel arrangement, production area and living area are arranged on both sides of the plant radial roads in the factory, so that the two do not affect each other. And in accordance with the compact focus of the concept, reasonable layout of the building site and workshop location, to achieve efficient, stable and secure production safety arrangements. Plant length is 386m, width is 303m and the total area is 116958m2, it mainly includes the administrative area, production plant area, storage and transportation area, auxiliary facilities area and other facilities area. We use the Auto CAD to conduct plant graphic design (the plant layout is shown in Figure 6-1). Figure6-1 The total plant layout This project uses Auto CAD to make the layout drawing of the equipment to SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR& 25.000 TONS OF MMA FROM ISOBUTYLENE COPRODUCTION PROJIC LilacLilac TeamTeam ofof ThreeThree GorgesGorges UniversityUniversity 15 determine the placement of equipment to facilitate the production, and design the three-dimensional area of the plant at the same time, as shown in figure 6-2. See the workshop flat surface, the three-dimensional layout of the workshop and the factory layout of the three-dimensional in source files. Figure6-2 3D plant layout 7.Security environment analysis The project uses Risk System software to identify the major hazard sources in the methanol and formaldehyde storage tanks in the plant area, and analyzes the source phase of the tank materials according to the physical properties of the materials, and then predicts the pool fire accident model based on the results of the source phase analysis. The boiling fluid extended steam explosion prediction and the steam cloud explosion model predict and analyze the damage range of the accident. The analysis results are shown in Figure 7-1； SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR& 25.000 TONS OF MMA FROM ISOBUTYLENE COPRODUCTION PROJIC LilacLilac TeamTeam ofof ThreeThree GorgesGorges UniversityUniversity 16 Figure7-1 The graph of methanol storage tank damage range In addition, the EIAN noise evaluation software was used to evaluate the noise of the plant and its surrounding environment. The environmental impact assessment was carried out by using the software such as Screen3Mod atmospheric estimation. The HAZOP analysis software, the Dow chemical fire and the explosion risk index were used. After the risk assessment of major hazard sources, the control system of SIS, DCS and ESD is set up to realize the stable control of equipment and system. In addition, the project optimizes the design of the entire water system by using water pinch technology to maximize the reuse rate of water, and then purify the water to meet environmental protection requirements and improve economic efficiency. The project team optimized the water consumption of the whole plant through Water Design software, and obtained the water network after preliminary optimization design. SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR& 25.000 TONS OF MMA FROM ISOBUTYLENE COPRODUCTION PROJIC LilacLilac TeamTeam ofof ThreeThree GorgesGorges UniversityUniversity 17 Figure7-2Optimized water network map 8.Economic Benefit Analysis Our economic and technical analysis follow relevant economic indicators and analysis methods. We fully understand the market price, make a detailed description of the whole plant investment, profits and cash flow estimates. The calculation shows that the total investment of the factory is 19.2 billion yuan, the annual profit is 65million yuan, and the investment recovery period is 6years. The results show that the factory is economically feasible, with high economic efficiency. Figure8-1 Statement of cash flow-1 Production periodNoProject 12345 1Cash inflow 1.2Residual value 00 100172.4128793.1143103.4 1.3Recycling liquidity 00000 SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR& 25.000 TONS OF MMA FROM ISOBUTYLENE COPRODUCTION PROJIC LilacLilac TeamTeam ofof ThreeThree GorgesGorges UniversityUniversity 18 1.4Tax credits 00000 Total 00100172.4128793.1143103.4 2Cash outflow 2.1Construct ion capital 80464.180464.1000 2.2Flow capital 8046.48046.4000 2.3Operating cost 00 22606.429065.3 32294.8 2.4Taxes0014586.718754.420838.2 2.5Loan 00274002740027400 2.6Income tax 00 7595976510850 Total 88510.588510.5472188.184984.791383 3NCF-88510.5-88510.527984.2843808.3651720.4 Accumula tion of crash flow -88510.5-177021-149036.7-105228.4-53507.9 Figure8-2 Statement of cash flow-2 Production periodNoProject 678910 1Cash inflow 1.2Residual value 143103.4143103.4143103.4143103.4143103.4 1.3Recycling 0000 SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR& 25.000 TONS OF MMA FROM ISOBUTYLENE COPRODUCTION PROJIC LilacLilac TeamTeam ofof ThreeThree GorgesGorges UniversityUniversity 19 liquidity 1.4Tax credits 00000 Total 143103.4143103.4143103.4143103.4143103.4 2Cash outflow 2.1Construct ion capital 00000 2.2Flow capital 00000 2.3Operating cost 32294.832294.832294.832294.832294.8 2.4Taxes20838.220838.220838.220838.220838.2 2.5Loan 27400274002740000 2.6Income tax 1085010850108501085010850 Total 9138391383913836398363983 3NCF51720.451720.451720.479120.479120.4 Accumula tion of crash flow -1787.549932.9101653.3180773.7259894.1 9.Project Summary The project conducted a preliminary design with a design principle that environmental protection and sustainable development. Through literature review and market research, it was determined that high-purity isobutylene was synthesized by MTBE to produce high value-added products of butyl rubber and SiNOPEC DUSHANZI VRANCH 600,000 TONS/YEAR OF IIR& 25.000 TONS OF MMA FROM ISOBUTYLENE COPRODUCTION PROJIC LilacLilac TeamTeam ofof ThreeThree GorgesGorges UniversityUniversity 20 MMA.Using Aspen Plus software to complete the whole process of the design process, and make material balance calculations and energy balance calculations of the whole process. According to the process simulation data and then combine Aspen Energy Analyzer so