JPS59161605A - Combustion device employing oxygen combustion burner - Google Patents

Abstract

PURPOSE:To improve energy efficiency, by a method wherein a heat exchanger is mounted to recover waste heat, a CO2 recovering means, which recovers CO2 through purging of exhaust gas from moisture content, is installed, and a combustion temperature regulating circuit, which regulates combustion temperature through return of a part of exhaust gas to a burner, is provided. CONSTITUTION:Fuel (a) and oxygen (b), which are heated through recovery of waste heat imparted by exhaust gas by means of a heat exchanger 6, are fed to an oxygen combustion burner 2 and burnt in a combustion furnace 1. Exhaust gas through the heat exchanger 6 is fed to a cooler 13, and thereafter, CO2 and water are separated from each other in a drain bottle 14. CO2, purged of moisture content, is recovered through a CO2 extracting part 14b at the upper part of the drain bottle 14. Further, an exhaust gas return pipe 11, which is branched at a stage preceeding the heat exchanger 6 on an exhaust pipe 5 and has a valve 10, is connected to the burner 2 to from a combustion temperature regulating circuit 12 which controls the combustion temperature through regulation of the concentration of the fuel and oxygen in furl-air mixture adjusted by the burner 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a type of deer determination device that uses an oxygen combustion gas in a combustion furnace or the like.

BACKGROUND ART Conventionally, there has been a type of combustion apparatus using a search burner that uses hydrocarbon fuel such as heavy oil or natural gas and burns it down using oxygen as an accelerator. Compared to a burning device that uses air to burn water, this type of combustion device can achieve a higher temperature than a combustion device that uses air to burn water, generates less gas, and therefore has less loss of thermal energy. It has the advantage of a shade that does not involve generation.

By the way, in recent years, from the viewpoint of the IMwJ agreement and environmental conservation, all industrial fields are being turned to stone energy. However, in conventional combustion equipment using oxyfuel combustion burners, the exhaust gas generated by koi-firing is directly discharged into the atmosphere, and therefore the thermal energy of the exhaust gas cannot be used for Δ-U at all. It was listed as BI. Rule ``Gal$yama V'' It is also desired to use energy key 1t4.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a combustion device using a T-bar with a high energy consumption.

In order to achieve this object, the present invention aims to reduce the difference between the exhaust gas generated in the furnace and the raw material supplied to the separate burner in a kiln firing process equipped with a ridge burner. A heat exchanger is installed to thermally connect one or both of them; to recover heat generation, and to remove water from the exhaust gas to recover carbon dioxide (abbreviated as CO2). C
O2 recovery + stage is provided, and a part of the waste is returned to the burner of NRJ, so that the combustion temperature can be increased.
The row value indicates that the combustion equipment is configured with a control circuit.

Hereinafter, the invention will be explained in detail based on embodiments shown in the drawings.

The first layer is a schematic diagram illustrating an embodiment of the invention.

In this figure, reference numeral 1 denotes a printing furnace equipped with oxygen 1 and 2 burners. At the same time, oxygen was also supplied as a supplementary medicine.

Each of the front supply pipes 3 and 4 has a heat exchanger 6 connected to the middle part thereof with air W5 drawn from the cavernous furnace 1.
In this heat exchanger 6, the waste heat of the waste is given to the fuel and oxygen.

The fuel and paper waste heated by recovering the waste heat are used exclusively in the MiJ Kisaku Burner 2, with a mixing ratio that ensures complete combustion and leaves almost no oxygen or residue in the waste slag. It is burned in the n1 Koishaki Furnace IIf. Note that the AU embryonic supply unit 3 is provided with a bypass 3a that can supply fuel to the burner 2 without passing through the heat exchanger 6. You can choose the company route or i4Q.

In addition, the MiJ burner 2 has a branched pipe 7 at the front stage of the heat exchanger 6 of the exhaust pipe 5, and a valve 10 in the middle part (!?
11 and 2 are connected, and a part of the waste is υF
The air passes through a return pipe 11, is controlled in flow rate by a valve 10, and then is supplied to the burner 2. These air pipes 11 and box 10 control the concentration of G4H6 and E system in the air produced by the burner 2 to control the heating drum. It constitutes a combustion temperature adjustment circuit 1z.

M1J burner 2 to 2! One six micrometers of Citogas, who was sent to the interrogation in response to the received money, advice, and peace of mind, was released in the 100th century after suffering from the disease b' inside the kiln furnace 1. Will it happen here? y Totsunos is a product that has been developed as a ashing water-based G5 family, so ideally it is one that does not contain CO as a component and water. It's huru. This 1jj is usually before ml
When asked by Kai Rokuchi Chibai 6, the former Jyuku Netsuiri Nmika and 1
giving the violet (in this example at least oxygen),
cooled down.

The water that has passed through the heat exchanger 6 is introduced into the water supply 13 that is connected to the heat exchanger 6, and after that, the water contained therein is converted, and then it is poured into the drain bottle 14. CO? and water are separated. The separated water is temporarily stored in the lower part of the drain bottle 14, and then discharged from the drain bottle 14a. Further, the CO2 from which water has been removed is taken out from the CO2 outlet 1i14b at the upper part of the drain bottle 14 and collected.

In addition, in the above-mentioned combustion device, in order to achieve a long life in the shishiraki furnace, it is necessary to perform ↑ul control so that the fuel is supplied at the ideal mixing ratio or slightly in excess of that. ρλ is desirable, and there is a platform that can be used to avoid the enemy dregs during the 9th attack.

For this reason, in the above-mentioned embodiment, a string swimming circuit 5a equipped with a thread removal straight line 15 is provided in addition to the lid trachea 51C.

In addition, as shown in FIG. 1, the heat 9 of the exhaust pipe 5 = Mi of the vessel 6
Separate the first stage? In addition to the #3 heat recovery by the Ail heat exchanger 6, the heat recovery by the heat boiler 16 is It is also possible to recover heat.

According to the above-mentioned uninvented combustion device, the waste heat of the exhaust gas generated in the combustion furnace 1 can be recovered in the heat exchanger 6 and given to fuel and oxygen, thereby improving thermal efficiency. Part of the exhaust gas is still returned to the burner 2 to adjust the degree of combustion, and to the east, the exhaust gas is divided into waste heat by the heat exchanger 6 and heated to waste hot water 16 according to the safety. By cooling and removing moisture, Co can be recovered, and the energy utilization efficiency of the device itself can be improved.

Next, with reference to FIGS. 1 and 2, an example of a stage for recovering CO2 that can dramatically improve the efficiency of collecting CO2 will be explained.

FIG. 2 is a simplified diagram showing an example of a CO2 recovery method suitable for use in cases where the fuel is Nukedarandosu or adult oxygen is used as the 1' filtrate.
L! The 1 + stage is not shown in Figure 1 and requires 4 combinations with a must-remove box. Hereinafter, a case will be described in which waste natural scum (referred to as LN()) is used as a fuel.

The CO2 recovery means shown in FIG. 2 is equipped with heat exchangers 17 and 18 for the sleeve section of 21-. At the same time, it regenerates the other. Here, to explain the state in which the heat exchanger 17 is used for purification, as shown in the figure, LNG is introduced into the fuel introduction section 19, and is introduced into the fA sump 17 through a pipe line 21 equipped with a valve 20. . At this time, the cell 23 of the pipe line 22 connected to the human lung 19 is closed, and LNG is not supplied to the heat exchanger 18.

The heat exchanger 17 also includes a drain bottle 1 shown in FIG.
Co2 is introduced from 4 through pipe 24 and U'f25,
Here, the CO and the LNG are thermally removed at a temperature of about 1,000 ml, and the moisture and other small substances remaining in the CO2 are removed without solidifying the CO2.

On the other hand, at this time, the drain bottle 26 connected to the drain bottle 14
In this case, the box 27 inserted in the middle thereof is closed, and no CO2 is supplied to the heat exchanger 18.

The LNG that has passed through the heat exchanger 17 is heated and vaporized, and is sent to the fuel supply pipe 3 shown in FIG. 1 through a pipe 28 and a valve 29. In addition, the heat exchanger 17 cools the
The CO2 from which the Jl products have been removed is sent to the drain bottle 30, where water (and other vertical components) are separated and removed.
Next, heat for temperature increase 9: converter 3 i VC is led. In this heating heat exchanger 31, CO.

It is brought into thermal contact with the atmosphere and raised to about room temperature. Next, the heated CO2 is sent to the other heat exchanger 18 that is not provided with a sheath, and heats the heat exchanger 18 to the main strength. From this VC, in the threading holder 18, 6t lAi,
Any small impurities contained therein are removed and sent to the drain bottle 30' where they are removed.

The CO, which has replaced the heat exchanger 18 in the regeneration state, is connected to the line 32.
It will be recovered after the process.

As mentioned above, Kaminichi's CO2 recovery method uses 21
By using the silk heat exchangers 17 and 18 in (b) alternately for 1 g of CO2 and regeneration, it is possible to recover and recover CO2.

According to the combustion apparatus of the present invention which combines the combustion apparatus elements shown in FIGS. 1 and 2 with the CO2 recovery means as described above, in addition to the advantages obtained by the apparatus shown in FIG. When LNG is used as fuel, #'+m, which contributes to the vaporization of LNG, is given from the exhaust gas (CO□) by the K'S heat exchanger 17 or 18 to improve the thermal efficiency during combustion. At the same time, LNG can be used as the low-temperature fluid to cool down the CO2 and produce a higher CO2 gas, thereby increasing the unilateral rate of energy in the equipment installation.

In addition, in the above examples, the middle stage of CO2 recovery is
It goes without saying that ρ), which has been explained with reference to an example applied to the case of using G, can also be applied to the case of using a rectangular string.

As explained above in detail in 1., the exhaust gas is brought into thermal contact with either or both of the fuel and oxygen supplied to the oxy-fuel combustion burner.
By installing a heat exchanger to recover the waste heat of the exhaust gas, it is possible to improve the heat exchanger, and also to recover heat from the exhaust gas. Since a 002 recovery mechanism is provided to remove moisture, the CO2 produced during the firing process can be recovered and used for other purposes, improving the economical efficiency of the apparatus. In addition, since a combustion temperature -4f circuit is provided to return a part of the set to the burner, the combustion temperature can be adjusted, and therefore it can be applied to heat treatment furnaces etc. to widen the temperature range that can be used for single-use TiJ. Expand the usage. In addition, in the case of using converted natural gas as a fuel or using several types of acid as an acid system, it is possible to bring the recovered CO2 into thermal contact with the medicated natural gas or an acid system. It is possible to set up an expropriation device, cool CO7 as a natural scum that has become a natural scum, or a natural scum that has disappeared, and make it possible for CO7 to be turned into a hostile natural scum or 7.
It's a temple that can make the improvement of JJ year to 1, giving heat to the distribution system, and the Ei Lugi kalsha of Soen Kasumi body, and also CO2
The mobilization of vehicles through collection takes advantage of the high cost.

4. An explanation of the same year between IW Figure 1 shows an example of Koiyaki Souki according to the present invention. FIG. 2 is a track configuration diagram showing an example of a CO2 recovery means used as a CO2 recovery means.

■・・・K＼Kiren, 2...Enzyme v Miyaki no Kuna, 3・
・・Flammable supply (k, 4, ・Kaishikukankan, 5・
... Exhaust pipe, 6... Heat extractor, 10... Valve, 11.
... Exhaust (return sound, 12... Koiyaki temperature control circuit, 14
...Drain hotter, 17.18...Japanese heat protector.

Prisoner's Day +: Acid Vacation Company

Claims (1)

[Scope of Claims] 1. In a combustion device using an oxy-combustion burner installed in a combustion furnace or the like, in which a hydrocarbon-based phlegm and oxygen are combusted and combusted, tiiJ fuel 3. If a heat exchanger is installed that gives waste heat from the well sludge generated in the combustion furnace to one or both of the
A combustion comparison using a Koiyaki burner with a price tag of 10 stages for separating and recovering carbon dioxide from exhaust gas. 2. Part of the υtos generated in the MiJ combustion furnace
The combustion to be sent back to the tactile combustion burner is useless, the line is to be equipped with a -. . 3. The fuel is natural gas, and the carbon recovery means has a heat exchanger that brings it into thermal contact with the natural gas exhaust gas recorded in the MtJ record. Claims 1 or 2, which use a bed combustion burner as claimed in claim 1 or 2. 4. The oxygen is collected in the branch tree, and the n+1 Hi2 carbon dioxide recovery stage has a heat exchanger that brings the material element and the waste material into thermal contact with each other. A combustion device using an oxy-fuel combustion burner, which is allocated to any one of the first to third terms of the watch range, which is intended to be used as a fuel.