SU427978A1 - METHOD FOR OBTAINING UNLIMITED HYDROCARBONS - Google Patents

Description

one

The invention is directed to the method of thermally adjusting the carbohydrate-containing raw material in the presence of WATER 1 steam, in particular heavy oil fractions, and raw oil in the production of olefins, new and aromatic hydrocarbons.

There is a known method for the production of thermal unsaturated hydrocarbons, re (work of hydrocarbon feedstock successively in the convection and radiant zones of a furnace in the presence of water vapor.

In order to reduce coke formation and increase the product yield according to the proposed method, the raw material at the outlet, from the convection zone, is subjected to direct KOHTaiKTy with green heat carrier, which can be used water vapor or hydrogen.

Perc10c is performed by the following ooipase.

The raw materials supplied to thermal processing are preheated to a temperature of 300–400 ° due to the use of heat from the heat of the gases. Then, by direct contact of the raw material with the coolant, for example, superheated water vapor or hydrogen heated to

700-900 ° C, raise the temperature of the raw material to 720 ° C for 0.1-0.4 sec. With a heat-to-raw material ratio of 0.8-1, the near-wall layer is effectively saturated with coolant and a hydrodynamic regime is created, leading to a decrease in co-decomposition. " The proposed method allows to increase the amount of the liquid phase to a cenapaTOipe up to 15 wt. % of raw materials and increase the yield of ethylene by 4-5, propylene by 3-b weight. % gas formation up to 15 wt. % In stable process conditions.

Example 1. Oil from the Romashkinskoye field In the zone of convection, they are heated with flue gases to a temperature of 300 ° C in the presence of 30% saturated water vapor (boiler). convective heat exchange. The amount of water vapor is 90%. Our raw material is carried out for 0.1-0.3 seconds. Then the mixture enters the separator, where 15% by weight of liquid is separated.

phases, and the vapor – gas fraction enters the radio zone and undergoes thermal processing at a temperature of 830 ° C.

In tab. 1 shows the yield of thermal products (Processing.

Table 1

table 2

P ip and m e p 2. Oil from the Prilukskoye field in convection ash is heated with gases to a temperature of 380 ° C IB in the presence of 30% saturated water packaging - diluent. Then the heating of the raw material to a temperature of 690 ° C is carried out with the help of the direct / contact: superheated thermal fluid - water (steam - and convective heat exchange. The amount of vapor is 80%. The heating of the raw material is carried out for 0.1- 0.3 sec. Next, the mixture enters the separator, where 10.6 wt.% Of the liquid phase is separated, and the vapor – gas mixture enters the radiant zoo and undergoes thermal processing at a temperature of 840 ° C.

In tab. 2 shows the yield of thermal processing products.

100

100

Total

Subject invention

Claims (2)

1. A method for producing non-specific hydrocarbons by thermal processing of a hydrocarbon | OD (raw materials are successively in the "vectoral and radio zone zones of a tube furnace in the presence of steam, characterized in that, in order to reduce the amount of reduction and increase in the yields of the target products, The output of the conventional zone of the convention zone is reversed directly to the contact with the superheated coolant. 2. A method according to claim 1, characterized in that water vapor or hydrogen is used as the coolant.