Method and system suitable for propylene preparation technology from coal-based methanol for improving load of process steam tower
A methanol-to-propylene and steam tower technology, which is applied to the steam generation method using heat carrier, steam generation, and hydrocarbon production from oxygen-containing organic compounds, can solve the problems of rising production costs of propylene and restricting the development of the propylene industry, and achieve The effect of reducing energy consumption, increasing load, and improving heat exchange efficiency
Active Publication Date: 2014-01-29
CHNA ENERGY INVESTMENT CORP LTD +2
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] The method provided by the present invention and its process steam generation system will be further described in detail below in conjunction with the accompanying drawings, but the present invention is not limited thereby.
[0029] Such as figure 1 As shown, the process water used to generate steam passes through the hydrocarbon oil coalescer 1 to remove hydrocarbons, then is sent to the steam tower condenser 2 for preheating through the first pipeline 3, and then is sent to the process water preheating through the second pipeline 5. Heater 4 heats. The process water heated by the process water preheater is sent to the reboiler 8 at the bottom of the steam tower through the third pipeline 7, where it is further heated and steam is generated at the bottom of the steam tower. The reboiler uses medium pressure steam as a heat source. The condensate produced by the medium-pressure steam after heat exchange is collected in the condensate tank 11 through the fourth pipelin...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method suitable for a propylene preparation technology from a coal-based methanol for improving the load of a process steam tower. The method comprises the following steps: (a) conveying process water which is used for steam generation after hydrocarbon substances are removed by a hydrocarbon oil coalescer into a steam tower condenser for preheating, and then conveying into a process water preheater for heating; (b) conveying the process water after the heating by the process water preheater to a reboiler at the bottom of the steam tower for steam generation, taking medium-pressure steam as a heat source for the reboiler, and collecting and discharging the condensed liquid generated by the heat exchange of the medium-pressure steam by a liquid condensing tank; and (c) introducing the steam generated in the steam tower from the top of the tower, conveying the steam after heating as the process steam to a propylene preparation from coal-based methanol reactor, and introducing the waste water which contains water soluble impurities and is formed in the steam tower from the bottom of the steam tower. Additionally, the invention also provides a corresponding process steam generation system. According to the invention, the steam yield can be improved by about 110%.
Description
technical field [0001] The invention relates to a process for producing propylene from coal-based methanol, more specifically, a method and system for increasing the load of a process steam tower suitable for the process of producing propylene from coal-based methanol. Background technique [0002] Propylene, one of the low-carbon olefins, is an important basic organic chemical raw material in the chemical industry. For a long time, the source of propylene at home and abroad has mainly relied on naphtha cracking technology. In the past ten years, with the gradual reduction of petroleum resources and the continuous rise of international crude oil prices, the production cost of propylene has continued to rise, which has greatly restricted the development of the propylene industry. Therefore, some researchers at home and abroad are trying to find new methods to produce propylene from non-petroleum resources. With the maturity of industrial production technology of methanol pla...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F22B1/08F22D1/00C07C11/06C07C1/20
Inventor 姚敏张来勇王勇周光华焦洪桥蒙军黄文张勇李玉鑫陈四仿杨桂春岳国印张晨露齐静王军袁玉龙张伟
Owner CHNA ENERGY INVESTMENT CORP LTD