RU2823103C1 - Carbon black reactor - Google Patents

Abstract

FIELD: various technological processes.

SUBSTANCE: invention relates to production of technical carbon. Reactor for producing technical carbon comprises a housing in which are arranged in series a combustion chamber, equipped with an air supply chamber and a gas inlet chamber, mixing channels, in which raw nozzles are installed, reaction chamber for outlet of cooled soot-gas products, in which water nozzles are installed for pre-hardening and cooling of soot-gas mixture. Air chamber has a square cross section and contains trapezoidal swirlers with holes installed on the inner surfaces. Gas feed chamber has a variable cross-section from a circular one in the inlet zone to an oval one in the combustion chamber. Channels are inclined to the axis of the housing and have the shape of truncated cones, the smaller vertices of which are located on the side of the combustion chamber.

EFFECT: providing intensive flow turbulence.

1 cl, 4 dwg

Description

The invention relates to the carbon black industry, namely to a reactor for producing carbon black.

A reactor for producing soot is known containing a sequentially and coaxially installed combustion chamber with means for burning fuel with air, a mixing nozzle with raw material nozzles and nozzles for water, a reaction chamber with means for cooling and removing soot and gas products. The soot obtained from such a reactor is characterized by high reinforcing properties, but currently no longer meets the ever-increasing requirements of industry [RF Patent No. 2097398, IPC S09S 1/48, publ. 11/27/1997].

The disadvantage of this reactor is the insufficient turbulization of the flows in the reactor.

The closest to the proposed invention is a reactor for producing soot containing a housing in which combustion chambers are located in series, a mixing nozzle consisting of two channels with a diameter of 0.15 m, a total effective cross-sectional area of 0.036 m2 with a ratio dc/def = 0.7. The channels of the mixing nozzle are located parallel to the reactor axis. Both mixing channels are equipped with raw material nozzles and a reaction chamber for removing cooled soot and gas products from the reactor. The combustion chamber is equipped with an air chamber for air supply and a chamber for gas injection. The reaction chamber is equipped with water nozzles for pre-quenching and cooling of the soot-gas mixture. The combustion chamber, mixing nozzle, reaction chamber and device for removing cooled soot and gas products from the reactor are formed by a lining made inside the housing from refractory products [RF Patent No. 2131766, IPC B01J 10/00; С09С 1/48; С09С 1/50 publ. 06/20/1999].

The disadvantage of this reactor is the insufficient turbulization of the flows in the reactor.

The technical result of this invention is the creation of a reactor for the production of carbon black, which allows for intensive turbulization of flows.

The technical result is achieved by the fact that a reactor for producing carbon black is proposed, containing a housing in which a combustion chamber equipped with an air chamber for supplying air and a chamber for introducing gas, mixing channels in which raw material nozzles are installed, a reaction chamber for removing cooled soot and gas are located in series. products, in which water nozzles are installed for pre-quenching and cooling of the soot-gas mixture.

The distinctive design features of the proposed invention are that the air chamber has a square cross-section, contains trapezoidal-shaped swirlers with holes installed on the internal surfaces, the gas injection chamber has a variable cross-section from circular in the entrance area to oval in the combustion chamber, the channels are located under inclined to the body axis, have the shape of truncated cones, the smaller apexes of which are located on the side of the combustion chamber.

In fig. Figure 1 shows a diagram of a reactor for producing carbon black.

In fig. 2 shows view A (2:1).

In fig. 3 shows view B.

In fig. 4 shows view B.

The reactor for producing carbon black contains a housing 1, in which a combustion chamber 2 is located in series, equipped with an air chamber 3 for air supply and a gas input chamber 4, mixing channels 5 in which raw material nozzles 6 are installed, a reaction chamber 7 for removing cooled soot and gas products , in which water nozzles 8 are installed for pre-quenching and cooling of the soot-gas mixture. The air chamber 3 has a square cross-section, contains trapezoidal swirlers 9 installed on the internal surfaces with holes, the gas injection chamber 4 has a variable cross-section from circular, in the entrance area, to oval in the combustion chamber 2, channels 5 are located at an angle to the axis housings 1 have the shape of truncated cones, the smaller apexes of which are located on the side of the combustion chamber 2.

The reactor for producing carbon black operates as follows.

Preheated air enters combustion chamber 2 through air chamber 3, in which it interacts with trapezoidal-shaped swirlers 9 with holes and is intensively turbulized. The use of a trapezoidal shape ensures interaction of the flow with sides of swirlers of different lengths, and the presence of holes ensures gas flows, which also contributes to its turbulization.

Due to the fact that the air chamber 3 has a square cross-section, numerous vortices are formed in it.

Fuel gas is supplied to the combustion chamber 2 through the gas input chamber 4, which, for the purpose of turbulization, has a variable cross-section from circular, in the entry zone, to oval in the combustion chamber 2. This change in the cross-sectional shape leads to numerous accelerations and decelerations, which contributes to intense turbulization.

Combustion occurs in combustion chamber 2.

The flow of complete combustion products enters the mixing channels 5 where heated hydrocarbon feedstock is supplied through feed nozzles 6.

In mixing channels 5, the raw material decomposes to form a mixture of soot and gas products (carbon black and gas).

Due to the fact that the mixing channels 5 are located at an angle to the axis of the housing 1, they have the shape of truncated cones, the smaller apexes of which are located on the side of the combustion chamber 2, intense turbulization of the flows occurs, leading to the production of a product of the required quality. Turbulization is facilitated by both the conical cross-sectional shape of the mixing channels 5 and their inclined location to the axis of the housing 1, which also leads to the formation of flow accelerations.

From the mixing channels 5, the products enter the reaction chamber 7, at the end of which the products are cooled by injecting heated water through water nozzles 8. Next, the soot and gas products are removed from housing 1.

The proposed design of a reactor for producing carbon black allows for intensive turbulization of flows, which makes it possible to obtain carbon black of the required quality.

Claims (1)

A reactor for producing carbon black, containing a housing in which a combustion chamber equipped with an air chamber for supplying air and a chamber for introducing gas, mixing channels in which raw material nozzles are installed, a reaction chamber for removing cooled soot and gas products, in which water nozzles are installed are located in series. for pre-quenching and cooling of the soot-gas mixture, characterized in that the air chamber has a square cross-section, contains trapezoidal-shaped swirlers with holes installed on the internal surfaces, the gas injection chamber has a variable cross-section from circular in the entrance area to oval in the combustion chamber, the channels are located under inclined to the body axis, have the shape of truncated cones, the smaller apexes of which are located on the side of the combustion chamber.