DE1471587C

DE1471587C - Process for the production of dust coke

Info

Publication number: DE1471587C
Authority: DE
Inventors: Auf Nichtnennung Antrag
Original assignee: L&C Steinmueller GmbH
Current assignee: Hitachi Zosen Inova Steinmueller GmbH
Publication date: 1972-08-24

Description

und nachher den aus ihr austretenden Brennstoffstrahl von außen umhüllen. Sie bewegen sich dann in einer Schraubenlinie nach oben, heizen den eingeblasenen Brennstoffstaub auf die für die Entgasung erforderliche Temperatur auf und vermischen sich mit den aus dem Kohlenstaub austretenden Gasen zu einem Mischgas. Dieses Mischgas tritt zusammen mit dem entstandenen Koksstaub durch die Leitung 6 in den Abscheider 5 über. Während der entstandene Staubkoks bei 15 abgezogen wird, strömt das Gas durch die Leitung 7 seiner Verwendungsstelle zu, wobei als Verwendungsstelle in erster Linie eine Feuerungsanlage in Frage kommt. Bei Fig. 2 ist der Brenner 4 als Injektorbrenner ausgebildet und durch eine Leitung 17 mit der Leitung 7 verbunden. Während durch die Leitung 8 Druckluft, beispielsweise Hochofenwind, als Verbrennungsluft in den Injektorbrenner eintritt, wird durch die Leitung 17 das aus dem Koks abgeschiedene Mischgas angesaugt und in ίο die Feuerung 2 hineingeblasen.and afterwards envelop the jet of fuel emerging from it from the outside. You then move in a helical line upwards, heat the injected fuel dust to the one for degassing required temperature and mix with the gases emerging from the coal dust to a mixed gas. This mixed gas passes through line 6 together with the resulting coke dust into the separator 5. While the resulting dust coke is withdrawn at 15, the gas flows through the line 7 to its point of use, the point of use being primarily a furnace it is a possibility. In Fig. 2, the burner 4 is designed as an injector burner and through a line 17 is connected to the line 7. While through the line 8 compressed air, for example Blast furnace wind, as combustion air enters the injector burner, is turned off through line 17 The mixed gas separated from the coke is sucked in and blown into ίο the furnace 2.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

■■■■. · 1. ■ ■ ';. '2,' The improvement of the coke quality can only be achieved. A recovery of this

1. Process for the production of dust coke, gas as town or long-distance gas would only be possible by adding large amounts of high-quality gas to the coal dust in a closed 5. Beam from below into a cylindrical discharge chamber, however, can only be blown in through the room in exceptional cases and the mixture carried out and would also be uneconomical.
Dust coke and gas deducted at the upper end The object of the invention is to keep the supply and according to which the proportion of fixed carbon drive for the production of dust coke is kept largely constant, characterized in that the greatest possible yield of high quality, that a dust coke is achieved as the carrier gas while largely keeping the low-moisture carbon and also the hydrogen-fixed carbon, in particular the carrier-poor gas is used. location for the extraction of dust coke so in the Hütten-2 ^ process according to claim 1, characterized in that a utilization of the indicates that as a carrier gas unpurified and incidental mixed gas with low calorific value is used economically cooled furnace gas is economically possible.

To solve this problem, according to the invention

, dung a process for the production of dust coke

- suggested, which is characterized by

ao that the carrier gas is a low-moisture and also an

. Hydrogen carriers poor gas is used. When

The invention relates to a method for generating such gases are in question:

of dust coke, according to which the coal dust in _{a) purified} furnace gas,

closed beam from below into a cylindrical '. (· ■ · ^ - \.

Blown in the degassing chamber and the mixture of * ₅ ^b) ^unemi 8 ^tes furnace gas.

Dust coke and gas are withdrawn at the upper end and if the coke obtained in the dust coking plant is fed to a blast furnace according to the proportion of fixed carbon, the coke can be kept constant. The rate of the blast furnace was reduced by a considerable amount, which led to a very desirable Verdas process that leads to an improvement in the furnace gas economy as a result. At the same time, mixed gas with a high calorific value was received, which the heating additives exiting from the coking plant can be burned and could use as town or long-distance gas in a wind heater without any further use. In this process, the carrier gas used for the heating of the wind was made usable coke oven gas or part of the gas in the degassing system, while part of the furnace gas, such as gas that had already been obtained. There are, however, also systems, 35 mentioned above, uncleaned and uncooled as carriers in which the extraction of dust coke as the main gas in the degassing system is used. . ,
Its use in the chemical industry or there is also the possibility of cooling the boilers for sintering or for blowing into the high-level coking gases by appropriate ovens or as a lean agent in coking plants so that they play a role _{together with the (.} By carrying out the process accordingly, other top gases of a top gas to be cleaned, the quality of the dust coke produced could be continuously and finely cleaned, and it was improved; however, the following top gas network had to be used further.
Difficulties: In the figures, two exemplary embodiments are shown for the partial combustion of coke oven gas, natural gas 45 devices for carrying out the process according to the invention or other gases with a high water content.
Substance carriers produce a combustion gas with de- F i g. 1 shows a simple combination of a fire-speaking content of water vapor. If this is done with the degassing system,
Gas used as a carrier gas in dust coking, F i g. 2 using the same combination so it leads to a water gas reaction. Although this 5 ° of a part of the gas obtained is used as fuel for reaction in the proposed method, the furnace.

see from the wall losses to be kept low, the degassing system is shown in all figures with 1

is not associated with any heat loss, it acts designated. Upstream of it is a furnace 2, off

Nevertheless, they are disadvantageous because they are a charcoal of the combustion gases or partially burned gases

Loss of material in the coke dust obtained. 55 pass directly into the degassing system. the

The perceptible fuel to be degassed contained in the coking gases is used in the degassing system

and bound heat is, however, if it is supplied to through a nozzle 3. The firing is at

Steam generation (electricity generation), for air heating the exemplary embodiments according to FIGS. 1 and 2

or the like is to be used, equipped with a burner 4 on the market; 5 is a dust off rated lower than that for metallurgical 60 separators for separating the finished dust coke from

Carrier gas is used for purposes or as a lean agent in coking plants.

reversible dust coke. In addition, the coal loss in Fig. 1 is due to the nozzle 3 of the waste blown in with a corresponding increase in the gassing coal dust. It can, for. B. Ash content of the solid coke is connected, the furnace gas can be used as a blowing agent. the to reduce the value of the coke 65 burner 4 for the furnace is designed as a gas burner (According to the steel-iron calendar 1964, p. 40, the incineration in furnace 2 is reduced 1 ° / o ash instead of carbon at 2 o'clock%). Lindrian degassing space so that it can open the nozzle 3