WO1987003913A1 - Method of steel production in oxygen converter - Google Patents

Abstract

A method of steel production in an oxygen converter from solid metallic Fe-carriers, in which the metallic Fe-carriers are heated and melted by burning a solid carbon-containing fuel while continuously feeding the oxygen, the fuel being fed to the converter in two portions: the first - together with the Fe-carriers and the second - along the path of the oxygen. The solid carbon-containing fuel used for the first portion is a gas coal in a quantity of 20 to 30% by weight of the total quantity of the solid carbon-containing fuel needed for the melting process. The second portion of the solid carbon-containing fuel is charged after consumption of 20 to 30% by weight of the total oxygen needed for the melting process.

Description

SPECIAL INFORMATION DISCONTINUALLY DISCONTINUED TO DELIVER SYSTEMS The system is available for download, 5 free e-mails are sent to you The lower level of the industrial and important modern metallurgical industry is the processing of large metals, which is a large increase in the size of the country. The main objective of industrial production has become widespread: it is an acidic-inverted one. The ddassic method of production has become available in an acidic consumable using up to $ 30 lom.

At present, in the case of industrial development of the country 15, development of the means of production is being carried out in the USA, as a result of this, we are in the process of disintegrating.

These are fortunate, since the operation of the unit was inverted, it is only comparable to the classic, that is, a decrease in the value of 5

20 capacity of the converter, mainly due to the elimination of the melting cycle, which is connected, in particular, with the difficulty of ignition of the fuel at the beginning of the supply.

Izvesτen sποsοb προizvοdsτva sτali in κislοροdnοm κοnveρτeρe of τveρdyχ meτaldichesκiχ e -nοsiτeley 25 (smοτρi πaτenτ SSHΑ * 4,198,230, ΜΚI C 21 C 5/43, 1980), in zaκlyuchaschiysya τοm, chτο meτadlichesκie Ρe -? Nοsiτelzh nagρevayuτ and ρasπla-combustion vlyayuτ ποsρedsτvοm at the end of the corner to the bottom of the seam. To speed up the ignition process, it is possible to get a good angle of carbon in this case.

30 of a kind, metal .. - carriers or other consumable fuel is pre-loaded to. Heated. Otherwise, a reduction in ignition time is achieved due to the fact that the car is commercially available and the gas is completely free of gas.

Ρassmοτρennye πρiemy sοκρascheniya dliτelnοsτi zazhi- _"Hassium τveρdοgο ugleροdsοdeρzhaschegο τοπliva χaρaκτeρnzu- yuτsya Te ^χ nοlοgichesκοy and ορganizatsiοnnοy slοzhnοsτyu. This - 2 - due to the inadequacy of heating of metal and solid fuel outside of the consumables, the unit is inadequate condition that they are in good condition. 5 The initial heating of the metal is out of service due to the loss of life of the carriers and there is a large volume of space for overloading This increases the time of downloading the metal in the turn and, consequently,

10 BODIES, DURABILITY The use of fuel outside the fuel converter also reduces the fuel consumption factor. It is also known that the methods of production of steel have become acid

15 One of the inverters from solid metal is non-impregnated. MDL (smοτρi πaτenτ ΦΡG # 2729983, ΜΚY S2ΙS 5/28, Ι979g.) in κοτοροm πρi ποdache κislοροda nagρevayuτ and ρaeshgavlyayuτ meτallichesκie Ρe -nοsiτeli ποsρedsτvοm szhyaganiya carbon ρσdsοdeρzhaschegο τοπliva, κοτοροe zagρuzhayuτ in κοnveρτeρ

20 by two πορrations. The first part of the fuel oil is loaded together with its carriers, and the second is the flow of the acid from the moment of the onset of the melting of the liquid, which results in the liquid being consumed.

Аче On the other hand, the right amount of coal is used

25 USES IN BASIC COS. The use of a class of ant-drive or coke, that is, with a low content of volatility (up to E%) ₉ due to the difficulty of ignition and, consequently, it leads to an increase in

30 Va loma and a large wear out of losses due to the oxidation of coal-containing components in the ugly masonry. Β due to the high temperature of the coke oven (600–700 ° С), the time taken to heat and ignite the furnace does not exceed 7 minutes

35 that lengthens the smelter and thereby reduces the productivity of the converter.

Otherwise, there is an unreasonable use of acid. Most of the acid is consumed. - 3 - Xia damοvnmi with gases increasing πρi eτοm οκisliτel- ny ποτentsial gazοvοy φazy, and in connection with eτim προisχοdiτ οκislenie uτleροdsοdeρzhaschey sοsτavlyaschey φuτeροvκi, chτο usκορyaeτ its iznοs and syaedοvaτelnο, sροκ service chτο 5 τaκzhe umenshaeτ προizvοdiτelnοsτ κοnveρτeρa.

Disposal of the invention The basic task of the invention was to dissolve in the process of disruption of

10 The ignition operation of a solid fuel-friendly fuel would reduce the melting potency and thereby increase the fuel output.

The task posed has been resolved because, in the process of production, the goods have become in the acid invert from the equipment

15 meτallichesκiχ {e -nοsiτeley in κοτοροm nagρevayuτ and ρasπdavlyayuτ meτallichesκie Ρe -nοsiτeli ποsρedsτvοm compressive Hassium πρi neπρeρyvnοy ποdache κislοροda τveρdοgο ugleροd sοdeρzhaschegο τοπliva, κοτοροe zagρuzhayuτ in κοnveρτeρ bi- mja πορvdyami, πeρvuyu of κοτορyχ zagρuzhayuτ with sοvmesτnο

20 e - nοsiτelyami and vτορuyu - πο χοdu ποdachi κislοροda, sοglasnο izοbρeτeniyu in κachesτve πeρvοy πορtsii τveρdοgο ugleροdsοdeρzhaschegο τοπliva isποlzuyuτ gazοvy ugοl in κοlichesτve οτ 20 dο shο 30% τρebuemοgο on πlavκu κοli- chesτva τveρdοgο uτleροdsοdeρzhaschegο τοπliva and vτορuyu.

25 Sourcing fuel is loaded after being consumed from 20 to 30 mass. We recommend that you consume oxygen.

Expediently, the means of production have become acidic in one investment over the course of 10 + 20 $ at the time of the beginning of the beginning

30 cottages κislοροda dο mοmenτa zagρuzκi vτοροy πορtsii τοπliv ποdachu κislοροda οsuscheeτvlyaτ ρavnοmeρnym with increasing egο ρas ^χ οda dο value lying in πρedelaχ οτ 0,08 dο 0.26 m ³ / min per I κg gazοvοgο uτlya.

The use of gas coal makes it possible to exist

35 ignition for one minute, which substantially increases the duration of each melting, and thereby in turn increases the output by an average of one percent. Τρο- means that, the proposed method ensures a decrease in - - The price of acid is $ 40 and the price of heat is $ 25- .30. The best embodiment of the invention is an experience in an oxygen inverter from solid metal carriers, 5 are included in the following,

Н It consumes a small amount of fuel, such as metal, and the first part is a solid fuel, which is bypassed by gas.

The use of gas oxides with a volatile content of up to 25 wt. The use of coals with a high content of volatiles makes-

15 more (more than $ 40 wt.) Due to the larger single gas outlet, which leads to loss of fuel and fuel. Otherwise, such a large amount of ash contains more ash, which, when melted, goes to waste, reduces its weight and, consequently, reduces

20 OUTPUT OF ANNUAL STEEL AND OTHER INDICATIONS OR FUSES. The loss of gas depends on the content of volatile components and conditions that ensure quick ignition. Gas coal is sold in quantities from 20 to 30, generally required for the sale of coal for coal

25 energy saving fuel. Natural gas coal is dependent on the content of volatile constituents in it. For the sale of volatile constituents, in the amount of $ 25 wt., The required coal gas is taken in the amount of $ 30% of the total consumption of gas

30 inclusive, equal to $ 40 wt., Necessary coal gas to take in amount of $ 20 from the general amount of solid waste. Changes in the amount of coal gas to a particular or other state results in the transfer of oxygen or fuel.

35 After loading the carrier and starting coal supply, the fuel supply in the burner starts supplying the burner. The degree of assimilation of acid in the course of heating and pressure is different. Β first stage, when

- 5 - coal and metal, the consumption of oxygen for burning gas coal is low. The oxygen content in this process depends on the main form of the quantity of combustible gas phase which is emitted from coal, which is free from gas emissions. Therefore, at this stage of heating, the acid should be maintained at a level that ensures the burning of combustible gas phase.

10 The duration of this stage is mainly due to the ignition of gas coal in a wide range and to the optimum operating mode. It has been established that the process of burning coal is stabilized at the input of $ 20-30; At the moment of kielorada

15 below $ 20, the required amount of gas, the loss of volatile coal gas is increasing, and when the cost of oxygen is more than $ 30, the melting is lengthened. With this, there is a large amount of acid available directly from coal gas. _^

20 After delivery to the ship, 20 ÷ 30 $ is required for the amount of acid that is charged to the engine, which loads the second part of the fuel supply. Аче As a rule of thumb, coal seams are free of charge and use coals of antitact class or coke grade, so there is little to no volatility

25 of them (up to 9 wt $). Do not use gas coals as they are unsuitable, as long as they are hot, they must not be allowed to ignite.

30 come out with smoke.

The feasibility of using coal with a small volatile component (antioxidant, koks) is subject to the conditions for the burning of fuel. Β in case of use of coals with a high volatile content

35 lyayuschiχ (bοlee 9 $) προisχοdiτ inτensivnοe bysτροτechnοe selection leτuchiχ sοsτavdyaπιshχ, and in connection with nevοzmοzhnο- sτyu and ^χ ποlnοgο combustion inevitable ποτeρi τοshshva, chτο snizhaeτ κοeφφitsienτ isποlzοvaniya τeπla τοπliva, ποeτοm - - Necessary at the second stage of the process, the smelting has ceased to be used with a small content of volatile components (up to $ 9).

Tselesοοbρaznο in τechenie 10 * 20 $ vρemeni οτ start ποdachi 5 κislοροda dο mοmenτa zagρuzκi vτοροy πορtsii τveρdοgο τοπliva ποdachu κislοροda οsuschesτvlyaτ with ρavnοmeρnym An increase egο ρasχοda dο value lying in πρedelaχ οτ dο 0.08 0.26 m ³ / min per I ug of gas coal. The duration of this initial start-up depends on the content of the voltages.

10 components in gas coal. When using a gas heater with a volatile content of 40 wt. $, The duration of the initial heating charge is $ 10. With a decrease in the content of volatiles in the coal, up to 25 mass $, separate the initial exhaust air

15 that is up to $ 20. With a long initial start-up less than $ 10, there is a low absorption of acid, which increases its consumption. If the initial start-up of a smelter takes longer than $ 20, the flow of oxygen increases, while the result is an increase in the cost of fuel as a non-burner

20 wide volatiles. In the initial phase, it is necessary to increase the direct charge to a value that is in the range of 0.08 to 0.26 m ³ / min for I kg of coal. Oxygen at a rate of more than 0.26 m ³ / min for I kg of gas coal does not affect

25 eiφiκavdi προtsessa coal sgορaniya, τaκ κaκ eτοm in the case of coal combustion eκοροsτ limiτiρueτsya already ποdvοdοm ugleροda κ mesτu ρeaκvdi and izbyτοchny κislοροd οκisdyaeτ in οsnοv- nοm meτallοlοm and vyzhigaeτ ugleροdsοdeρzhaschie sοsτavlyayuschie φuτeροvκi. Therefore, the delivery of acid with a higher

30 0.26 m ³ / mi for I kg of gas coal is inappropriate. The lower level of oxygen consumption (0.08 m ³ / min per I kg of gas coal) is determined by the condition for the start of the emission of volatile coal from gas and its use is for combustion

35 Before the end of the melts, the waste of the acid is available. After delivery, we recommend that you consume a quantity of oxygen.

For better understanding of the subject matter of the claimed invention. - 7 -

The following is a summary of the proposed products in the case of an oxygen blower with a capacity of 1000. 5 Пшνιеρ I.

Исл The oxygen converter loads the metal and the pressure on the solid coal: 17.5 kg of coal

10 va) with a volatile content of 32.5 wt. $ And begin to give an oxidizing agent containing 95 wt. Of oxygen and 5 wt. Of nitrogen. 1,3 1.3 minutes, which amounts to - ^• $ 13 at the time of the start of the delivery of the acid for the loading of the second-hand coal feed,

15 The consumption of acid is equally higher than 3.0 m ³ / min (which makes up a share of 0.171 m ³ / min per I kg of gas coal). After delivering 25.75 m ^{3 of} acid, which makes up 25% of the mass required for the smelting of oxygen, an average of 10.025 minutes is charged in the furnace

20 sale of carbon-friendly fuel: 52.5 kg of antifreeze and support for the supply of acid with a consumption of 3.0 m ³ / min.

The total oxygen consumption for the melting plant is 103 m ³ . The yield of liquid steel is 1003 kg, that is, $ 91.2 per annum. Duration of floats for production

25 steel with a carbon content of С = 0.05 $ - 40.1 min. The discharge of gas and gas is 57 m ³ . Птжмеυ 2.

Исл Oxygen-free load 1100 kg of metal and the first part of the product that supports the load:

30 14 kg of gas exhaust (that is, there are 20% of the total weight required for floating; The oxidizer contains 95 mass% of oxygen and 5 mass of nitrogen. Pρi eτοm τechenie in 1.6 min ρas ^χ οd κis-

35 mines are equally up to 2.38 m ³ / min (which is 0.17 m ³ / min for I kg of gas coal). After delivering 26.5 m of oxygen, there is 25 mass $ of fuel required to melt the amount of oxygen in 10.1 minutes, which leaves 15 hours. - - Meni οτ nachada ποdachi κislοροda dο mοmenτa zagρuzκi vτοροy πορvdi τveρdοgο ugleροdsοdeρzhaschegο τοπliva ^'za- gρuzhayuτ in κοnveρτeρ vτορuyu πορvdyu τveρdοgο uτleροdsο- deρzhaschegο τοshshva 56 κg anτρatsiτa and προdοlzhayuτ ποdachu 5 κislοροda ρasχοdοm with 2.38 m ³ / min. The total amount of acid available for melting is 106 m ³ . The liquid steel yield is $ 91.1 with a carbon content of C = $ 0.05. Duration of floats - 40.5 min. The discharge of gas and gas is 57 m ³ .

Yu pρimep 3.

Исл The oxygen converter loads 1,100 kg of metal and the direct sale of solid coal: 21 kg of coal (this is only 30

15 fuel) with a volatile content of 25 wt. $ And start to deliver an oxidizer containing 95 wt. Of oxygen and 5 wt. Of nitrogen. 1,3 1.3 min flow rate of acid is equally higher than 3.57 m ³ / min (which is 0.17 m ³ / min per I gas)

20 satisfied). Pοsle ποdachi .κislοροda 26,25 m ³ (το esτ 25 wt $ οτ τρebuemοgο on πlavκu κοlichesτva κislοροda) cheρez 10.1 min zagρuzhayuτ in κοnveρτeρ vτορuyu πορtsiyu τveρdοgο ugleροdsοdeρzhaschegο τοshshva 49 κg anτρatsiτa and προdοlzha- yuτ ποdachu κislοροda with ρaeχοdοm 3.57 m ^ / min Cumulative

25 The flow of acid to the melting plant is 105 m ³ . The liquid liquid price is $ 91.0. The duration of the melts for the production has become with the content of carbon С = 0.05 $ - 40.4 min. The gas flow to the melting site is 57 m ³ . Example 4.

30 Β κislοροdny κοnveρτeρ zagρuzhayuτ 1100 κg meτaddο- lοma and πeρvuyu πορtsiyu τveρdοgο ugleροdsοdeρzhaschegο τοπliva: 17.5 κg gazοvοgο charcoal (25 $ οτ vsegο κοlichesτva τveρdσgο τοπliva) with sοdeρzhaniem leτuchiχ eοsτavlyaschiχ 25 $ by weight and nachinayuτ ποdavaτ οκisliτel, sοdeρzhaschy

35 95 wt.% Acid and 5 wt.% Nitrogen. Β τechenie 1.05 min (το esτ 15 $ vρemeni οτ start ποdachi κislοροda dο mο- menτa zagρuzκi vτοροy πορtsii τveρdοgο τοπliva) ρasχοd κislοροda ρavnοmeρnο uvelichivayuτ dο 3.0 m ³ / min, chτο sοs-

- 9 - It has an approximate value of 0.171 m / min per I kg of gas coal. Pοsle ποdachi κislοροda 20.8 m ³ (20 wt $ οτ τρebuemοgο on πlavκu κοlichesτva κislοροda) cheρez 7.0 min zagρuzhayuτ in κοnveρτeρ 52.5 κg anτρatsiτa and προdοlzhayuτ ποdachu κislο- 5 ροda ρasχοdοm with 3.0 m ³ / min. The total cost of acid in the melting plant is 104 m ³ . The end of the year is $ 91.0. The duration of the melts for the production has become with the content of carbon С = 0.05 $ - 40.1 min. The gas flow to the melting site is 57 m ³ .

10 Example 5.

Ве Converter loads 1100 kg of metal and 17.5 kg ($ 25 of the required amount of fuel) of gas coal with a fuel content of 32%, starting from 32

15 95 wt.% Acid and 5 wt.% Nitrogen. Β τechenie 1.45 min (το esτ 15 $ vρemeni οτ start ποdachi κislοροda dο mο- menτa zagρuzκi vτοροy πορvdi τveρdοgο τοπliva) ρasχοd κislοροda ρavnοmeρnο uvelichivayuτ dο 3.0 m ³ / min (chτο sοsτavlyaeτ 0.171 m ³ / min per I κg gazοvοgο guessing). After

20 ποdachi κislοροda 32.7 m ³ (30 wt chτο αοsτavlyaeτ $ οτ τρebuemοgο κοlichesτva κielοροda on πlavκu) cheρez Ι0,9min zagρuzhayuτ vτορuyu πορtsiyu τveρdοgο ugleροdsοdeρzhaschegο τοπliva in κοτορuyu vχοdiτ 52.5 κg anτρatsiτa and προdοlzha- yuτ ποdachu κislοροda with ρasχοdοm 3.0 m ³ / min. General ρасχοд

25 acid for the melting pot - 109 m ³ . The end of the year became with the content of carbon С = 0.05 $ - 91.0 $. DURATION OF BOATS - 41.2 min. The discharge of gas and gas is 57 m ³ . EXAMPLE 6.

30 sales of fuel-friendly coal: 17.5 kg of coal with a volatile content of 32.5% (which is only $ 25) Then they begin to give an oxidizing agent containing 95% by weight of oxygen and 5% by weight of nitrogen. And

35 for 0.73 minutes, the consumption of acid is equal to that of 3.0 m ³ / min (which is 0.171 m ³ / min for I kg of gas coal). After delivering 27.5 m ^{3 of} acid (which is 25 mass% of the amount required for the melting of oxygen), after 9.53 minutes, it will be charged directly.

- 10 - including solid carbon: 52.5 kg of antifreeze and maintains an acid supply of 3.0 m ³ / min. Dry acid at the bottom - 110 m ³ . The duration of the melts for the production of steel has ceased with the content of the C = 0.05 $ - 40.4 min. The end of the year was $ 90.9. The discharge of gas and gas is 57 m ³ . Example 7. • On the contrary, it loads 1,100 kg of metal and the first part of the consumable fuel: 17,5 kg of fuel, in the case of

32.5 wt. $ (Which makes up 25 of all that is required for the melting of small quantities of solid fuel). Then they start to give an oxidizing agent containing 95% by weight of oxygen and 5% by weight of nitrogen. Pρi eτοm in τechenie 1.55 min chτο sοsτavlyaeτ 20 $ vρemeni οτ start ποdachi κislοροda dο mοmenτa zagρuzκi vτοροy πορtsii τveρdοgο τοπdiva, ρas- χοd κisdοροda ρavnοmeρnο uvelichivayuτ dο 3.0 m ³ / min, chτο sοeτavlyaeτ 0.171 m ³ / min per I gas supply for gas. Pοsle ποdachi κislοροda 21.2 m ^3, 20.2 wt chτο sοsτavyaτ οτ τρebuemοgο on πlavκu κοlichesτva κislοροda, cheρez.7,75 E zagρuzhayuτ vτορuyu πορvdyu τveρdοgο ugleροdsοdeρzhaschegο τοshshva: 52.5 κg anτρavdτa and προdοlzhayuτ ποdachu κislοροda with ρasχοdοm 3 0 m ³ / min. Total acid flow to the melting site - 105 m ³ . The duration of the melts for the production has become with the content of the angle C = 0.05 - 40 min. The end of the year is 91.1. The discharge of gas and gas is 57 m ³ . Example 8.

Β κοnveρτeρ zagρuzhayuτ 1100 κg meτallοlοma and πeρvuyu πορvdyu τveρdοgο ugleροdsοdeρzhaschegο τοπliva: 17.5 κg gas-zοvοgο coal sοdeρzhaniem leτuchiχ sοsτavlyaschiχ 32,5mas $, chτο sοsτavlyaeτ 25 wt $ οτ vsegο τρebuemοgο κοlichesτva τveρdοgο uτleροdsοdeρzhaschegο τοshshva. Then they start to give an oxidizing agent containing 95% by weight of oxygen and 5% by weight of nitrogen. Pρi eτοm τechenie in 1.6 min, 15 chτο sοsτavdya- eτ $ vρemeni οτ start ποdachi κislοροda dο mοmenτa zagρuzκi vτοροy πορvdi τveρdοgο ugleροdsοdeρzhaschegο τοπ- Lib, ρasχοd κisdοροda ρavnοmeρnο ποvyshayuτ dο Ι, 4m ³ / min chτο sοsτavlyaeτ 0.08m ³ / min per I kg of coal gas. After - II - 26.5 m ³ ποdachi κislοροda, chτο sοsτavlyaeτ 25 wt $ οτ τρebuemοgο on πlavκu κοlichesτva κislοροda, cheρez 10.7 min κοnveρτeρ zagρuzhayuτ vτορuyu πορvdyu τveρdοgο ugleροdsοdeρzhaschegο τοshshva: 52.5 κg anτρatsiτa and προ- 5 dοlzhayuτ ποdachu with κislοροda output 1.4 m ³ / min. The total acid flow to the melting site is 106 m ³ . The duration of the melts for the production has become with the content of carbon С = 0.05 $ - 40.7 min. The end of the year is 91, 1. Gas supply - 57 m ³ .

10 Example 9.

It consumes 1,100 kg of metal and the first consignment of consumable support: 17.5 kg of coal with a gross content of $ 22, not exceeding $ 32. that’s all

15 quantitatively friendly. a seam. Then they begin to give an oxidizing agent containing 95 wt.% Of acid and 5 wt. Of nitrogen. In addition, within 1.6 minutes, that amounts to $ 15 at the time of the start of the delivery of the acid to the load at the beginning of the loading of the coal

20 generally, the consumption of acid is equal to 4.55 m ³ / min, which is 0.26 m ³ / min for I kg of coal gas. After a delivery of 26.5 m ³ ($ 25 is required for the consumption of oxygen after 10.0 minutes, the fuel is charged to the consumer for a second time

25 fuels: 52.5 kg of fuel and antioxidant supply of acid with a consumption of 4.55 m ³ / min. Accumulated waste to the melting site - 106 m ³ . The duration of the melts for the production has become with the content of carbon С = 0.05 $ - 41.0 min. Best annual rate - $ 90.9. Gas flow -57m ³ ,

30 Pροmyshlennaya πρimenimοsτ yzοbρeτenzhe mοzheτ πρimenyaτsya πρi προizvοdsτve sτali in κislοροdnοm κοnveρτeρe of shiχτy, sοdeρzhaschey $ 100 τveρdyχ meτallichesκiχ Ρe -nοsiτeley, τaκiχ κaκ sκρaπ (meτallοlοm, προκaτnaya οbρez, meτallichesκie οτ-

35 Lite and machine tools), metalized billets, sponge iron.

Claims

- 12 -ΦΟΡΜУΙΑ IZBΟIA 1. The method of production has become part of an acidic converter from solid metal carriers, in which it heats and melts the metal. -nosi- 5 τeli ποsρedsτvοm combustion πρi neπρeρyvnοy ποdache κislοροda τveρdοgο ugleροdsοdeρzhaschegο τοshshva, κοτοροe zagρuzhayuτ in κοnveρτeρ two πορvdyami, πeρvuyu of κοτορyχ zagρuzhayuτ sοvmesτnο with D -nοsiτedyami and vτορuyu - πο χοdu ποdachi κislοροda, οτlichayuschiysya τem, chτο in κachesτ- 10th first part of the company is the right to use coal gas. coal in the amount of 20 to 30 wt. 15 Required for the quantity of acid. 2. The method of production has become part of an acid supply, which is different from the fact that, at a cost of $ 10-20, the unit is due to a load 20 diva The supply of acid is carried out with an equal increase in its consumption to the value that is in the range of 0.08 to 0.26 m ³ / min per I kg of coal gas.