Compound heat transfer combined fixed bed methanol-to-hydrocarbon reaction system
A methanol-to-hydrocarbon and reaction system technology, which is applied in the preparation of liquid hydrocarbon mixtures, processing hydrocarbon oil, and hydrocarbon oil treatment products, etc., can solve the problems of large power consumption and large equipment investment, and achieve low power consumption and low equipment investment , easy to debug effects
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Embodiment 1
[0069] Example 1, methanol-to-gasoline components, liquefied gas and heavy gasoline components.
[0070] Regarding the solid heat conduction system, the embodiment of the heat conduction element 22: metal screens are used on the outer and inner facades of the main catalyst bed to protect the catalyst bed and reduce gas flow resistance. The top and bottom surfaces are closed with metal plates, and there is a reinforcement structure connected to the reactor shell. The ring-shaped carbon steel plate or aluminum disc is used as the main heat-conducting part, and the catalyst bed and the ring-shaped aluminum disc are stacked alternately. By adjusting the thickness of the catalyst bed and the distribution along the radial direction, the thickness and radius of the aluminum disc, etc., it can be The temperature field distribution that meets the needs is obtained.
[0071] Regarding the selection and design of the ejector heat exchange system, the high-temperature gas in the first bu...
Embodiment 2
[0082] Methanol to mixed aromatics. See attached figure 1 , Methanol reacts with light aromatics to produce polyalkyl aromatics, such as trimethylbenzene, durene, etc. As a chemical raw material, its added value is higher than that of gasoline. The heat exchanger 23 can be simplified by increasing the distribution density of the heat conduction element 22 in the main catalyst bed and increasing the share of solid heat conduction.
[0083]The methanol raw material from the raw material pump 1 has a pressure of 2.5-2.6Mpa and a temperature of 25°C--30°C. It passes through the feed valve 2 and is sprayed out at a pressure of 2.5-2.6Mpa through the raw material nozzle 4 to form high-speed methanol gas. The mist stream injects the high-temperature product gas with a pressure of 1.0-1.2Mpa and a temperature of 380°C--450°C in the first buffer chamber 3, and forms a pressure of 1.2-1.4Mpa and a temperature of 150°C-- The mixed gas at 200°C enters the second buffer chamber 20 on th...
Embodiment 3
[0086] A compound heat exchange combined fixed-bed methanol-to-hydrocarbon reaction system, comprising: a fixed bed, a rectification tower 8, and the fixed-bed shell 17 is sequentially composed of a first buffer chamber 3, a catalyst bed 5, and a second buffer chamber 3 from top to bottom. Two buffer chambers 20, an intermediate chamber 19, and a supplementary catalyst bed 18; the catalyst bed 5 is arranged symmetrically with respect to the nozzle 4 of the first buffer chamber 3 outlet, and the inlet between the catalyst bed 5 and the second buffer chamber 20 A heat conduction element 22 is also arranged between them, and the material outlet at the bottom of the fixed bed is connected to the bottom reboiler 14 of the rectification tower 8 and the oil-water separator 12 in sequence, and the oil-water separator 12 is respectively connected to the dry gas buffer utilization system 11 and The water treatment system 13 is connected.
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