SU871737A3 - Unit for carbon black production from liquid hydrocarbons - Google Patents

Abstract

1451481 Carbon black INTERNATIONAL FROSSBLACKS PROCESS ESTABLISHMENT 7 Nov 1973 [10 Nov 1972 31 Aug 1973] 51725/73 Heading C1A Carbon black is produced from liquid or gaseous hydrocarbons by thermal decomposition of the hydrocarbon by partial combustion in a combustion chamber, the hydrocarbon being introduced into the combustion chamber as a heated substantially homogeneous mixture with an oxygen-containing gas through inlets which are substantially evenly distributed over the cross-section of the combustion chamber, and being therein partially combusted at a temperature of 950‹ to 1,200‹C.; the combustion products are then cooled by indirect heat exchange with at least one stream of cooling medium, and separating the carbon black formed. In the case of a liquid hydrocarbon the homogeneous mixture is formed by introducing preheated liquid hydrocarbon under pressure and preheated oxygen-containing gas into a plurality of vaporization zones which lead into the combustion chamber, whereas in the case of a gaseous hydrocarbon the hydrocarbon and the oxygencontaining gas are introduced under pressure into a mixing chamber and the resulting substantially homogeneous mixture is heated and then introduced through a plurality of entrances into the combustion chamber, the mixture being further heated as it is introduced into the combustion chamber.

Description

one

The invention relates to the installation

to obtain carbon black from liquid hydrocarbons.

A known installation for producing carbon black, containing successively installed combustion chamber with a partition, in which mixing channels with fuel nozzles installed therein, and connected to an air source and a raw nozzle installed along the axis of the device, a reaction chamber, a cooling chamber and soot release l.

The injector feedstock is surrounded by a series of first fuel injectors. Around these first fuel injectors is a ring of fuel injectors. The streams of smoke gases generated by the first and second fuel injectors can, independently of each other, vary in their composition and in their quantity. Ethyl can have a relatively wide range of influence on the quality of soot produced, however, flue gases are spent on controlling flows.

The closest technical solution is an installation for producing soot from liquid hydrocarbons, containing a sequentially installed air chamber, a reaction chamber with a partition, in which mixing channels are made, with pipes for fuel supply installed in them, and raw nozzles located along the perimeter of the reaction chambers, a cooling chamber and a means for soot extraction 2.

The separate introduction of flue gas and raw material streams makes it difficult to regulate to precisely observe the specific quality of soot produced.

The aim of the invention is to simplify the regulation of the quality of soot.

This goal is achieved by the fact that, in an installation for producing liquid hydrocarbons, the raw nozzles are installed in the mixing channels and the installation is additionally equipped with an air preheater installed between the cooling chamber and the means for soot extraction and the connected pipeline with the air chamber.

By mixing the raw material with the fuel and the oxygen carrier to homogeneity before entering the reaction chamber, it is possible to control the quality of the soot produced in such a way that only one component is adjusted, for example, the amount of oxygen carrier. As a result of this simplification, it is possible to provide an extremely fast transfer to a new quality and exact observance of the latter. Thanks to the air heater, it is also possible to pre-draw the combustion air needed to create the reaction temperature without an additional heat source.

Fig 1 is a diagram of the proposed installation; in fig. 2 burnout, vertical incision.

The installation contains successively installed horizontal reactor consisting of an air chamber 1, a partition 2 and a reaction chamber 3, a cooling chamber 4, an air heater 5 connected by a pipe 6 with an air chamber 1, and means for separating soot from flue gases consisting of a preliminary cyclone the separator 7 and the adjacent filtered separator 8 connected to the air preheater through pipe 9. In the partition 2, mixing channels are made expanding towards the reaction chamber 3 Aly 10 connected to the air chamber 1, in the mixing channels 10 are installed raw nozzles 11.

The installation works as follows.

Liquid hydrocarbon is fed through the raw nozzles 11 into the mixing channels 10, which are simultaneously fed from the air chamber 1 heated. In the air preheater 5, the hydrocarbon is mixed with air in the mixing channels, after which the mixture is fed into the reaction chamber 3 for combustion. In the reaction chamber 3, a partial combustion of hydrocarbon takes place with the formation of soot-gas products, which enter the cooled chamber 4, vatem through the air heater 5, simultaneously heating the air supplied to the air chamber 1 through pipeline 6, through pipeline 9 to the cyclone separator 7 and filtered separator 8 , the separated soot is removed from the installation by means of conveyor 12, while the purified flue gases are discharged through the pipeline 13. The hydrocarbons fed to the raw nozzles 11 are heated in a preparative m

the device 14 and is fed through the pressure pipe 15 to the nozzles 11,

A blower 16 is connected to the cooling chamber 4, supplying the air necessary for cooling the carbon black products. The air heated in the cooling chamber 4 is discharged through the discharge pipe 17. From the blower 18, the necessary air for combustion is supplied through a pressure pipe 19 in which the flow meter 20 is installed, to the air heater 5, from where it is fed through the pipe 6 to the air chamber 1.

To start the proposed installation, a burner 21 is provided, with which the installation is preheated.

Since only two components are introduced into the mixing channels 10: hydrocarbons on the one hand, and combustion air on the other, the quality control of the soot produced can be established simply by, for example, changing the amount of supplied combustion air. Such a translation can be carried out very quickly and accurately, as well as monitoring it, by measuring the amount of supplied combustion air, which greatly simplifies the regulation of the quality of soot produced in comparison with the known installations.

Claims (2)

1. US patent No. 3490870, CL. 23-20.9.4, 197.0. . 2. US Patent No. 2895804, cl. 23-209.4, 1959 (prototype). cvl fu