TH121139A - Methods of heating for chemical transformation and process and methodology for olefin production. - Google Patents

Abstract

DC60 (25/08/54) Methods and systems for heating the processes of chemical transformations. That are utilized in the production of olefins By catalytic dehydration of Corresponding hydrocarbons The catalytic hydrogenation process uses diluted steam to Operated at the ratio of water vapor to oil Which can be 1.0 or lower, and the temperature of the furnace Steam superheater type Relatively low Processes and systems are used Benefits for Styrene Production by Ethylbenzene Catalytic Dehydrogenation Methods and systems for heating up the process of chemical transformation. That are utilized in the production of olefins By catalytic dehydration of Corresponding hydrocarbons The catalytic hydrogenation process uses diluted steam to Operated at the ratio of water vapor to oil Which can be 1.0 or lower, and the temperature of the furnace Steam superheater type Relatively low Processes and systems are used Benefits for Styrene Production by Ethylbresene Catalytic Dehydrogenation

Claims (3)

Disclaimer (all) which will not appear on the advertisement page: Amendment 13 July 2017 1. Methods for heating the process of chemical conversion process strearm. With at least one chemical reactant, consisting of the steps of: a) fluid superheating Heat transfer fluid; b) heat transfer fluid; transfers heat that has undergone superheating to Process flows; c) at least partial separation of the heat transfer fluid after the heat transfer Heating in step b to part one and part two; d) applying pressure to a section of the heat transfer fluid; e) recycling one part of the pressurized heat transfer fluid to the superheating phase (a); And f) the second induction of the fluid transfers heat into the process stream. -------------------------------------------------- --------------------------------- 1. Methods for heating the flow of the replacement process. A chemical conversion process strearm containing at least one chemical reactant, comprising the steps of: a) superheating fluid. Heat transfer fluid; b) heat transfer fluid; transfers heat that has undergone superheating Also flows the process; c) at least partial separation of the heat transfer fluid into the first and the second; d) applying pressure to a section of the heat transfer fluid; e) recycling one part of the pressurized heat transfer fluid to the superheating phase (a); And f) induction of the second part of the heat transfer fluid into the process stream 2. Method of claim 1, which is supplemented by Pull-out procedure The least The third part of the heat transfer fluid After the heat transfer procedure (b) and before the discrimination procedure (c) 3. Method of claim 1, where many recycling procedures are performed 4. Clause 1 method that Supplemented with Stages of superheating The second part of the heat transfer fluid prior to the procedure (f) 5. Method of claim 1 that includes addition Stages of superheating The second part of the heat transfer fluid before the procedure (f) 6. Method of claim 1 where step (d) of pressure is applied to the part of the fluid. Heat transfer consists of conducting a portion of the fluid, transferring heat to a thermocompressor, and inducing a fluid that has been extruded into the thermostat. Compressor, the compressed fluid is at a higher pressure. Section one of the heat transfer fluid 7. Method of claim 6 where the heat transfer fluid and the compressed fluid is steam 8. Method of claim 1 where the fluid transfers Heat is water vapor 9. Method of claim 8 where the chemical transformation process consists of dehydrogenation and the chemical precursor is a selective compound from the ethyl group. Benzene, ethyl toluene, propane and butane 1 0. Method of claim 9 where the chemical transformation process consists of the production of styrene by dehydrogenation. The Nation of Ethylbenzene 1 1. The process for the production of olefene. By catalytic dehydrogenation of hydrocarbons Consisting of: a) superheating The steam feed stream in a heater containing A large number of heating zones; b) Heat transfer from superheated steam to the process stream. Containing Diluted water vapor and hydrocarbons, sufficient heat, have the effect of dehydrogenation. Accelerated hydrocarbon reactions At least the part in the chain reaction, where after heat transfer the superheated steam Will turn into used steam; c) separation of such used currents Into part one and part two; d) to pressurize the part of the said steam used; e) Recycling the first part through the pressurization of the used steam. To the giving zone Heated at one of the heaters; f) Second part recycling Which is a different part (section) of the heater To the second heating zone In a heater, g) heating the second part of the used steam. To regenerate the treated steam Superheated in the second heating zone; And h) the least aggregate One of the superheated steam goes to the process stream 1 2. The process of claim 11 where the heat transfer process is performed in at least one type of heat exchanger (heat exchanger) relative to the zone Action 1 3. Process of claim 11 where the process of supplying a portion of used steam consists of: Induction of the said portion of the used steam. Into the thermo-compressor, and by inducing the compressed steam into the thermo-compressor, the compressed steam is at The pressure is higher than the used steam portion 1 4. The process of claim 13 where the olefins produced are polystyrene and the hydrocarbons are ethylbenzene. Rights 11 where olefins produced are polystyrene and hydrocarbons are ethylbenzene 1 6. In the process of styrene production in the reaction zone By touching the vapor mixture Water and ethylbenzene with steam / oil mass ratios With the catalytic dehydrogenation at temperature Of the dehydrogenation reaction, improvement includes: the inclusion of sufficiently diluted steam with ethylbenzene. To reduce the mass ratio of steam / oil Let it be no more; Degrees where the steam that undergoes superheated heat at less Is used to transfer Sufficient heat until ethylbenzene is added. And the steam diluted to the temperature of the reaction and where at least part of the superheated steam is said to be Will be combined with ethylbenzene to provide a minimum Diluted Steam Part 1 7. Process of claim 16 where used steam is obtained from heat transfer. To ethylbenzene And the diluted steam is sent to the heater. To regenerate the steam at Extremely heated 1 8. Process of claim 17 where used steam Will be divided into two parts, at least one part It is pressurized in the thermostat compressor. 1 9. Process for polystyrene production. By the accelerated dehydrogenation of ethylbenzene, the process consists of: a) the least First and second reaction zones, each with Relationship with quantities affecting the acceleration of dehydrogenation catalysts; b) arrangement of a large number of furnaces of the heating chain; c) Provision of a feed stream containing a volatile mixture And ethylbenzene with water vapor / oil weight ratio Is not greater than approx.0.5; d) combining the feed stream with the first stream of superheated steam to provide a fluid stream with a steam / oil weight ratio. Is not greater than approx.1.0; e) exposure to the fluid stream with the dehydrogenation catalyst In the first reaction zone Under the condition of the reaction of dehydrogenation To provide the first effluent; f) heat transfer from the second stream Of the superheated steam to the first effluent in the heat transfer chain relative to the second reaction zone, the second stream of the steam That has been given extremely hot Becomes a stream of used steam after its heat transfer to the first effluent; g) the first type of effluent exposure Which has been heated to a dehydrogenation catalyst in the second reaction zone Under the condition of the reaction of dehydrogenation To provide styrene-containing product stream; h) separating the used steam stream into a second; i) supplying the stream of used steam; j) heating the pressurized part of the used steam In the giving zone Hot at one of the kilns To provide a second stream of superheated steam, the top stream that is recycled (recycled upstream), to the heat transfer zone relative to Second reaction zone; k) heating the second part of the used steam In the second heating zone in the furnace to provide a first stream of superheated steam 2 0. The process of claim 19 is supplemented by: second heating of the vapor. Used water Will be heated in the heating zone Second hot in the furnace To provide a third stream of superheated steam; Heat transfer from the third stream of superheated steam to the fluid stream in the heating zone relative to the first reaction zone, the third current of the steam at Through superheating Will become a second stream of used steam On transfer of Its heat to the fluid stream; Heating a second stream of used steam In the third heating zone in the furnace to provide a first stream of superheated steam. Which is combined with feed 2 1. Process of claim 19 where the process of providing pressure to part of the steam The used steam consists of inducing a portion of the used steam. Into the thermo-compressor and inducing the compressed steam into the thermo-compressor, the compressed steam is at the pressure Higher than the used steam 2 2. The process of claim 19 where the product flows with polystyrene Will be split into First component Containing purified polystyrene And the second component containing ethylbenzene 2 3. The process of claim 19 where the steam / oil ratio Is not more than about 1.15 and the steam that undergoes superheated heat At a temperature not greater than about 815C