JP4691997B2 - Waste fuel conversion system in cement manufacturing facility and cement manufacturing method using waste fuel conversion system - Google Patents

Description

  The present invention relates to a halogen-containing fuel conversion system in a cement manufacturing facility that uses a halogen-containing material containing halogen such as chlorine as a fuel and uses the fuel as a part of fuel in the cement manufacturing facility, and a method of manufacturing cement using the system. Is.

  As is well known, various plastics are used as various beverage containers, recording tapes, automobile tires, and the like. These plastics are disposed of as a large amount of industrial waste after use, but in recent years, a method of incinerating the waste has been adopted due to the limit of landfill treatment.

  By the way, combustible wastes such as the plastics generate a predetermined amount of heat by incineration. In view of this, there has been implemented a treatment method in which the combustible waste is put into a rotary kiln in a cement production facility and fired, and at the same time, the heat generated at that time is used as part of the fuel for cement production.

  At this time, if the above flammable waste is directly put into the kiln bottom part of the rotary kiln or the rising duct provided in the preceding stage, the amount of heat at the time of incineration can be used for preheating the cement raw material. This does not contribute to the firing of the cement raw material. Further, when the combustible waste contains a lot of moisture, the heat of vaporization lowers the exhaust gas temperature at the input location, which may hinder stable operation.

As a prior art for solving such problems, for example, a waste treatment apparatus for cement firing described in Patent Document 1 below has been proposed.
This waste treatment apparatus includes an externally heated kiln that generates dry distillation gas by dry distillation with a high-temperature gas before putting combustible waste such as plastic into the rotary kiln, and a high-temperature chlorine bypass gas generated in the rotary kiln. A high-temperature gas supply device that supplies high-temperature gas mixed with low-temperature cooler exhaust gas to the external heating kiln, and a dry distillation gas supply line that supplies dry distillation gas generated in the external heating kiln to the burner of the rotary kiln. Is.

According to the waste treatment apparatus having the above-described configuration, since the dry distillation gas generated in the external heating kiln is supplied to the burner of the rotary kiln, the main fuel of the kiln corresponding to the calorific value can be reduced. The dry-distilled ash treated with the external heat kiln has an advantage that adverse effects due to chlorine and moisture can be avoided because it is not supplied to cement burning equipment.
JP 2002-195524 A

  However, in the conventional waste treatment apparatus, when the combustible waste is a plastic having a high chlorine content such as polyvinyl chloride (PVC), the chlorine content is reduced by dry distillation in an external heating kiln. Since most of it moves to dry distillation gas, if it is used as a fuel for a rotary kiln, chlorine is concentrated in the cement firing equipment including the rotary kiln and clogged with a preheater, which adversely affects operations. is there.

  In general, cement production facilities are provided with a chlorine bypass system that extracts a part of the exhaust gas and removes chlorine content in order to avoid the concentration of chlorine by circulating in the facility. In addition, there is no ability to remove chlorine separately introduced from the dry distillation gas, which causes a problem that the amount of waste treated or the chlorine content in the waste is significantly limited.

  In addition, plastic wastes with low chlorine content such as polyethylene (PE) and polypropylene (PP) have a high calorific value per se. However, in the above waste treatment equipment, dry-distilled ash is put into cement burning equipment. Since it is not introduced, sufficient energy cannot be reused from the waste, and secondary waste called dry distillation ash that still needs to be processed is generated.

  The present invention has been made in view of the above circumstances, and halogen-containing materials such as flammable waste containing chlorine can be obtained without causing any harmful effects caused by halogens such as chlorine and bromine contained in the halogen-containing materials. It is an object of the present invention to provide a halogen-containing fuel conversion system in a cement manufacturing facility that can effectively use the calorific value as a part of cement manufacturing fuel, and a cement manufacturing method using the system.

In order to solve the above-mentioned problem, the invention according to claim 1 is a halogen-containing material fuel in a cement manufacturing facility having a preheater for preheating a cement raw material and a cement kiln for firing the cement raw material introduced from the preheater. A heat medium supply line connected to a bypass means for extracting a part of the high temperature gas from the preheater or the preheater and extracting the high temperature gas, and halogen in the high temperature gas supplied from the heat medium supply line. Halogen separation means for generating a flammable gas containing the halogen and a residue by directly contacting the halogen-containing material, and the halogen is recovered from the high-temperature gas containing the flammable gas discharged from the halogen separation means. Halogen recovery means and the halogen recovery means by this halogen recovery means A return line for the hot gases returned to the cement manufacturing facility after, the discharged the residue from the halogen separating means, calciner provided in front of the cement kiln and / or the cement kiln And a residue supply means for supplying the fuel as fuel .

  The bypass means refers to the entirety of various bypass facilities branched from a preheater such as a chlorine bypass or an alkali bypass.

Here, the invention described in claim 2 is characterized in that the high-temperature gas return line described in claim 1 is connected to the kiln bottom side of the cement kiln or the calciner. .

Furthermore, the invention according to claim 3 is the invention according to claim 1 or 2 , wherein the halogen-containing material is combustible waste, and the halogen separation means is directly heated to combustible waste. It is a thermal decomposition means which thermally decomposes and produces | generates the said combustible gas containing a halogen, and the residue containing an oil component and / or a solid substance.

The invention according to claim 4 is the invention according to any one of claims 1 to 3 , wherein an ammonia-containing material supply pipe for introducing an ammonia-containing material is connected to the halogen separation means. It is characterized by this.

Next, a fifth aspect of the present invention is a method for producing cement using the halogen-containing fuel conversion system according to any one of the first to fourth aspects, wherein the burner is provided before the kiln of the cement kiln. Thus, when the clinker is manufactured by firing the cement raw material supplied from the preheater, the residue is burned in the calcining furnace provided in the cement kiln and / or in the preceding stage of the cement kiln. It is used as a part.

In this case, the invention according to claim 6 is characterized in that an adhesion preventing material for preventing the halogen-containing material from adhering to the halogen separating means is supplied to the halogen separating means.

According to the halogen-containing material fuelization system in the cement production facility according to any one of claims 1 to 4 , and the cement production method according to claim 5 or 6 using the same, halogens such as chlorine and bromine are contained. The halogen-containing material comes into direct contact with the high-temperature gas from the preheater or bypass means supplied from the heat medium supply line in the halogen separation means, so that the flammable gas containing halogen and the residue from which most of the halogen has been removed And generate.

And about the high temperature gas containing the said combustible gas, after halogens, such as the said chlorine content and a bromine content, are removed in a halogen collection | recovery means, it returns to the said cement production equipment from a return line. Incidentally, when the content of the combustible gas in the high-temperature gas is large, for example, as in the invention according to claim 2 , by returning to the kiln bottom side of the cement kiln or the calcining furnace, Contributes in part to the fuel required for firing cement raw materials.

As for the upper Symbol residue, by supplying to the calciner, which is provided in front of the cement kiln and / or the cement kiln by residues supply means, it can be utilized as part of the fuel.

  As a result, halogen-containing materials containing halogen such as chlorine and bromine can be processed smoothly in the cement production facility, and the calorific value can be reduced without causing any harmful effects caused by halogen contained in the halogen-containing materials. It can be effectively used as a part of manufacturing fuel.

  In addition, in the halogen separation means, a high temperature gas from a preheater or bypass means having a low oxygen concentration is used as the high temperature gas to be brought into direct contact with the halogen-containing material, so that carbon dioxide is greatly generated when the halogen is separated. Can be suppressed. In addition, when fossil fuels such as coal and heavy oil are used for combustion in the main burner of the cement kiln, the high-temperature gas contains a large amount of sulfurous acid gas, so dioxins are also generated during direct contact. Can be suppressed.

  Furthermore, since the high-temperature gas containing the combustible gas discharged from the thermal decomposition means is returned again to the cement manufacturing facility such as the kiln front side of the cement kiln or the calcining furnace through the return line, the cement kiln There is no significant fluctuation in the flow of air exhausted through the preheater. Moreover, in the halogen recovery means, after removing halogen such as chlorine from the high-temperature gas, it is returned to the cement production facility, so that the halogen-containing fuel conversion system also functions as the chlorine bypass in the cement production facility. Can be made.

In particular, according to the invention described in claim 3 , when the halogen-containing material is combustible waste, the combustible waste is thermally decomposed by a thermal decomposition means, and combustible containing hydrogen chloride and mainly hydrocarbons. A pyrolysis gas composed of a gas, and a residue containing an oil component corresponding to the pyrolysis temperature, which is mainly composed of a carbide from which most of the halogen has been removed, are generated.

  And about the said pyrolysis gas, after the said halogen content is removed in a halogen collection | recovery means and it is made a combustible gas, it is supplied as a fuel of cement manufacturing equipment by a gas supply means. On the other hand, the residue can also be supplied as fuel into the cement kiln by the residue supply means.

  As a result, combustible waste containing chlorine can be processed smoothly in a cement production facility, and the calorific value of the combustible waste can be reduced without causing any harmful effects caused by chlorine contained in the waste. It can be used effectively as a department.

  In general, the preheater has a plurality of cyclones using the above-mentioned high-temperature gas as a preheating medium / centrifugation medium, and the cement raw material is finally preheated to about 900 to 1000 ° C. through these cyclones in sequence. Has been introduced into cement kilns. For this reason, the high temperature gas supplied from the preheater or bypass means to the halogen separation means such as the thermal decomposition means is appropriately selected from the cyclone to be extracted, so that the temperature of about 250 ° C. to 900 ° C. required for the separation of the halogen such as the above thermal decomposition can be A range of air can be supplied.

In this case, according to the invention described in claim 6 , even when the halogen separating means is a rotary kiln type pyrolysis furnace, for example, the halogen-containing material is converted into a pyrolysis furnace or the like by introducing an adhesion preventing material. Can be prevented from adhering to the inner wall, and a smooth halogen separation process can be performed.

  As such an adhesion preventing material, a soil material such as clay, paper material, wood, plastic film and the like are applicable. At this time, if waste such as sewage sludge, construction waste wood or waste plastic film is used instead, it is possible to simultaneously treat these wastes. In addition, as other adhesion preventing materials, cement raw materials, oil coke ash, and the like can be used. At this time, if it is in a coarse powder form, it can function as a support for the halogen-containing material, and if it is a fine powder, it can function as a powdery cover.

In particular, as in the invention described in claim 4 , if the halogen separation means is provided with a supply pipe for introducing an ammonia-containing material such as sewage sludge, the ammonia content contained in the ammonia-containing material is Since it reacts with chlorine contained in the waste during pyrolysis to produce ammonium chloride, it is preferable that the residue of chlorine in the residue can be minimized.

(First embodiment)
FIG. 1 shows a first embodiment of a waste fueling system in a cement manufacturing facility in which the halogen-containing fueling system in a cement manufacturing facility according to the present invention is applied when the halogen-containing material is flammable waste containing chlorine. A form is shown and the code | symbol 1 in a figure is the cement kiln for baking a cement raw material.
The cement kiln 1 is a rotary kiln provided so as to be rotatable about an axis, and a preheater 2 for preheating cement raw material is provided on the left side of the kiln bottom 1a in the figure, and the right side in the figure. 1b is provided with a main burner (not shown) for heating the inside. Further, a clinker cooler 3 for cooling the clinker obtained by the cement kiln 1 is provided in the front of the kiln 1b.

  Here, the preheater 2 is composed of a plurality of (four in the figure) cyclones 2a to 2d arranged in series in the vertical direction, and the cement raw material is supplied to the first cyclone 2a. . A chlorine bypass pipe 4 is connected to a duct for sending exhaust gas from the kiln bottom 1a of the cement kiln 1 to the fourth-stage cyclone 2d, and a part of the exhaust gas extracted by the chlorine bypass pipe 4 is in the latter stage. It is sent to the bag filter 5.

The cement production facility having the cement kiln 1, the preheater 2, the chlorine bypass pipe 4, and the like includes a waste fueling system for pretreating and introducing flammable plastic waste containing chlorine into the cement kiln 1. Is provided.
Reference numeral 6 in the figure is a sorting device provided on the most upstream side of the waste fueling system. The sorting device 6 is a waste containing a large amount of chlorine such as polyvinyl chloride or polyvinylidene chloride (hereinafter abbreviated as a chlorine-containing plastic), such as polyvinyl chloride or polyvinylidene chloride, by sorting specific combustible plastic waste to be treated by specific gravity sorting or infrared sorting. And wastes with low chlorine content such as polyethylene and polypropylene (hereinafter abbreviated as low chlorine concentration plastics).

  The low chlorine concentration plastic separated by the sorting device 6 is directly fed into the cement kiln 1 from the front side 1b of the cement kiln 1 through the waste fuel supply line 7. On the other hand, the chlorine-containing plastic separated by the sorting device 6 is introduced from a thermal decomposition line 8 into a subsequent thermal decomposition furnace (halogen separation means, thermal decomposition means) 9.

  The pyrolysis furnace 9 is a rotary kiln type external heat pyrolysis furnace in which a heat medium and a chlorine-containing plastic are supplied from opposite directions and driven to rotate around an axis, and the pyrolysis line is provided at one end thereof. 8 is connected. Moreover, the supply pipe 10 for supplying sewage sludge to the inside is connected to this one end side.

A heat medium supply line 11 that is connected to the chlorine bypass pipe 4 and extracts a high-temperature gas is branched from the other end of the pyrolysis furnace 9. Note that when the high temperature gas extracted from the chlorine bypass pipe 4 is used as a heat medium in the pyrolysis furnace 9, the amount of dust contained in the high temperature gas is relatively large. It is preferable to interpose a dust removing means such as a cyclone in the middle part.
On the other hand, a lower part of the pyrolysis furnace 9 is provided with a transfer line (residue supply means) 12 for supplying the pyrolysis residue generated therein as fuel into the cement kiln 1. Further, a decomposition gas extraction line 13 for sending a high-temperature gas containing the pyrolysis gas generated in the pyrolysis furnace 9 to a subsequent gas cleaning device (halogen recovery means) 14 is connected to the upper portion of the pyrolysis furnace 9. Has been.

  The gas cleaning device 14 is configured to bring an alkali component such as calcium hydroxide added from the supply pipe 14a into contact with the high-temperature gas discharged from the pyrolysis furnace 9, and to remove chlorine contained in the high-temperature gas. It is for removing from the pyrolysis gas as a salt such as calcium chloride, and various wet or dry gas cleaning apparatuses can be applied. Here, reference numeral 14 b in the figure is a discharge pipe for the calcium chloride aqueous solution and the like, and reference numeral 14 c is a return pipe for returning the pyrolysis gas containing unreacted alkali components to the inlet of the gas cleaning device 14.

  Then, on the discharge side of the gas cleaning device 14, high-temperature gas from which chlorine has been removed by cleaning by the gas cleaning device 14 is supplied to the second-stage cyclone 2 a and the first-stage cyclone 2 a of the preheater 2. A return line 17 is provided to return to the exhaust gas pipe 15 between them or the exhaust pipe 16 on the upstream side. Reference numeral 18 in the figure denotes an exhaust fan.

Next, an embodiment of a cement manufacturing method according to the present invention using the waste fuel conversion system configured as described above will be described.
First, the cement raw material charged into the first-stage cyclone 2a of the preheater 2 starts from the cement kiln 1 that rises from below as it sequentially falls to the lower cyclones 2b to 2d as shown by solid arrows in the figure. Is preheated by the high-temperature exhaust gas and finally introduced into the kiln bottom 1a of the cement kiln 1 from the lowermost cyclone 2d.

  And in this cement kiln 1, in the process gradually sent from the kiln bottom 1a side to the kiln front 1b side, it is heated by the combustion exhaust gas from the main burner, baked and becomes a clinker. Next, the clinker that has reached the kiln front 1b falls into the clinker cooler 3 and is sent to the right in the figure, as indicated by an arrow in the figure. At this time, the air is cooled to a predetermined temperature by the air supplied into the clinker cooler 3 and finally taken out from the clinker cooler 3.

  By the way, the chlorine content contained in the cement raw material volatilizes mainly as alkali chlorides such as KCl and NaCl in the high temperature (about 1400 ° C.) atmosphere in the cement kiln 1 and moves into the exhaust gas. And when this exhaust gas is exhausted from the kiln bottom 1a of the cement kiln 1 to the pre-heater 2 side and rises sequentially from the lower part to the upper cyclones 2d-2a, it is cooled by preheating the cement raw material, The chlorine content contained therein will move to the cement raw material side again.

As a result, the chlorine content circulates in the system composed of the cement kiln 1 and the preheater 2, and the internal chlorine concentration gradually increases due to the chlorine content newly introduced into the system from the combustion exhaust gas or the cement raw material. Eventually, the cyclone of the pre-heater 2 is blocked, which hinders operation.
Therefore, by periodically extracting a part of the high-temperature gas from the chlorine bypass pipe 4 and cooling it, the chlorine content is recovered as an alkali chloride in the subsequent bag filter 5 to increase the chlorine concentration in the system. To prevent.

  In parallel with the production of the cement clinker, the combustible waste to be treated containing chlorine-containing plastic is put into the sorting device 6 and separated into chlorine-containing plastic and other wastes such as low chlorine concentration plastics. . And about a low chlorine concentration plastic, it is made to burn in the cement kiln 1 by throwing in the inside from the kiln front 1b side of the cement kiln 1 directly via the waste fuel supply line 7, and as a part of the fuel Use.

  On the other hand, the chlorine-containing plastic separated by the sorting device 6 is supplied as a counterflow from the heat medium supply line 17 in the pyrolysis furnace 9 by being introduced from the pyrolysis line 8 into the subsequent pyrolysis furnace 9. Pyrolysis is achieved by direct contact with the hot gas from the chlorine bypass pipe 4. As a result, a pyrolysis gas mainly containing hydrogen chloride and a mixed gas of the high-temperature gas and a pyrolysis residue mainly composed of carbide from which most of the halogen has been removed are generated in the pyrolysis furnace 9. .

  At this time, the sewage sludge supplied from the sewage sludge supply pipe 10 prevents the chlorine-containing plastic and its pyrolysis residue from adhering to the inner wall of the pyrolysis furnace 9. In addition, when a large amount of water contained in the sewage sludge becomes water vapor, volatilization of chlorine from the waste during the thermal decomposition is promoted, and in parallel, the ammonia content contained in the sewage sludge is Reacts with volatilized chlorine to produce ammonium chloride. As a result, the residue of chlorine in the thermal decomposition residue is minimized.

  And the said thermal decomposition residue is supplied in the cement kiln 1 with the conveyance line 12, and is utilized as a part of fuel similarly to the low chlorine concentration plastic thrown in from the waste fuel supply line 7. FIG.

  On the other hand, the high-temperature gas containing the pyrolysis gas is returned to the exhaust pipe 15 of the preheater 2 or the exhaust pipe 16 on the upstream side thereof again through the return line 17 after removing chlorine in the gas cleaning device 14. As a result, the flow of air exhausted from the cement kiln 1 through the preheater 2 is not greatly changed, and after the chlorine content is removed from the high-temperature gas in the gas cleaning device 14, it is returned to the preheater 2 and the like. Therefore, the same function as the chlorine bypass system including the chlorine bypass pipe 4 and the bag filter 5 can be obtained.

  In this way, combustible waste containing chlorine can be processed smoothly in a cement production facility, and the calorific value thereof can be used as a fuel for cement production without causing any harmful effects caused by chlorine contained in the waste. Can be used effectively as part of

(Second Embodiment)
FIG. 2 is a diagram for explaining a second embodiment of the present invention, and the same components as those shown in FIG.
In this waste fueling system, a heat medium supply line 20 for supplying a high-temperature gas for thermally decomposing waste to the pyrolysis furnace 9 is connected to the third-stage cyclone 2 c in the preheater 2.

  By the way, in the preheater 2, the combustion exhaust gas (high temperature gas) introduced from the kiln bottom 1 a of the cement kiln 1 is gradually heated to the cyclones 2 d to 2 a above, thereby gradually heating the cement raw material. To be cooled. For this reason, although the said high temperature gas which was about 900 degreeC-1000 degreeC in the kiln bottom 1a turns into about (300 degreeC) in the 1st-stage cyclone 2a, the said high temperature gas was extracted from any cyclone 2a-2d. However, it is possible to supply air in the range of about 250 ° C. to 900 ° C. necessary for the thermal decomposition.

  On the other hand, the thermal decomposition is desirably performed at a maximum temperature in the range of 250 ° C to 650 ° C. At this time, if the pyrolysis is performed at a relatively low temperature within the above range, the pyrolysis gas has a relatively small calorific value, but a large amount of carbon remains in the pyrolysis residue, and the calorific value increases. . On the other hand, if it is carried out at a relatively high temperature, the calorific value of the pyrolysis gas increases, but conversely, the combustible content in the pyrolysis residue decreases and the amount of oil generated increases.

  Therefore, in the present embodiment, the case where the high-temperature gas is extracted from the third-stage cyclone 3c is shown as an example, but the cyclone 2a is extracted in consideration of the properties of the waste and the specification use of the combustible gas. It is possible to select the heating temperature by appropriately selecting ~ 2d.

  Further, in this waste fueling system, a branch pipe 21 is provided in the return line 17 for the high-temperature gas, and the branch pipe 21 is connected to the front kiln 1 b side of the cement kiln 1.

  According to the waste fuel conversion system having the above-described configuration and the cement manufacturing method using the same, in addition to obtaining the same operational effects as those described in the first embodiment, The heating temperature can be optimally selected by selecting the cyclones 2a to 2d to be appropriately extracted depending on the specification application of the combustible gas.

  In addition, since the high temperature gas extracted from the cyclone 2c of the preheater 2 is returned to the preheater 2 again via the return line 17, there is an advantage that the flow of the high temperature gas in the preheater 2 is not further greatly changed. It is done.

  In addition, since a part of the high-temperature gas is introduced into the cement kiln 1 by the branch pipe 21 of the return line 17, dioxins that may be generated during pyrolysis in the pyrolysis furnace 9 are removed from the cement kiln 1. It can be completely decomposed by the high temperature atmosphere inside and the sulfur content introduced from fuel such as coal.

  In the first and second embodiments described above, only the case where the waste is separated into the chlorine-containing plastic and the low chlorine concentration plastic by the sorting device 6 has been described. However, the present invention is not limited to this. Both the chlorine-containing plastic and the low chlorine concentration plastic may be introduced into the pyrolysis furnace 9 without selecting the sorting device 6. In particular, when the waste to be treated contains a large amount of chlorine-containing plastic, it is preferable that the entire system can be simplified by operating this configuration.

  In addition, a part of the pyrolysis gas and the mixed gas of the high-temperature gas and the pyrolysis residue discharged from the pyrolysis furnace 9 are used in a cement production facility in which a calcining furnace is provided in front of the cement kiln 1. Alternatively, the whole may be supplied to the calcining furnace instead of the cement kiln 1 and burned to be used as part of the fuel for the calcining furnace.

It is a schematic block diagram which shows 1st Embodiment of the halogen-containing material fuelization system in the cement manufacturing equipment which concerns on this invention. It is a schematic block diagram which shows 2nd Embodiment as the same.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cement kiln 1a Kiln bottom 1b In front of kiln 2 Preheater 2a, 2b, 2c, 2d Cyclone 4 Chlorine bypass pipe 5 Bag filter 6 Sorting device 7 Waste fuel supply line 8 Thermal decomposition line 9 Thermal decomposition furnace (halogen separation means, decomposition means )
10 Sewage sludge supply pipe 11, 20 Heat medium supply line 12 Transport line (residue supply means)
14 Gas cleaning device (halogen recovery means)
17 Return line 21 Branch pipe of return line

Claims (6)

A halogen-containing material fuelization system in a cement production facility having a preheater for preheating cement raw material and a cement kiln for firing the cement raw material introduced from the preheater,
A heating medium supply line connected to bypass means for extracting a part of the high temperature gas from the preheater or the preheater and extracting the high temperature gas;
Halogen separation means for directly bringing a halogen-containing substance containing halogen into contact with a high-temperature gas supplied from the heating medium supply line to generate a combustible gas containing the halogen and a residue,
Halogen recovery means for recovering the halogen from a high-temperature gas containing the combustible gas discharged from the halogen separation means;
A return line for returning the high temperature gas after the halogen is recovered by the halogen recovery means to the cement production facility;
And a residue supply means for supplying the residue discharged from the halogen separation means as fuel to the calcining furnace provided in the cement kiln and / or the preceding stage of the cement kiln. Halogen-containing fuel system in cement manufacturing facilities. The halogen-containing material fueling system in a cement production facility according to claim 1, wherein the return line of the high-temperature gas is connected to the kiln bottom side of the cement kiln or the calcining furnace . The halogen-containing material is flammable waste,
The halogen separation means is a pyrolysis means for pyrolyzing the combustible waste by direct heating to produce the combustible gas containing halogen and a residue containing oil and / or solid matter. The halogen-containing fuel conversion system in a cement manufacturing facility according to claim 1 or 2. 4. The halogen-containing fuel conversion in a cement production facility according to claim 1, wherein an ammonia-containing material supply pipe for introducing an ammonia-containing material is connected to the halogen separating means . system. A method for producing cement using the halogen-containing fuel conversion system according to any one of claims 1 to 4,
When the clinker is manufactured by firing the cement raw material supplied from the preheater by the burner provided in front of the kiln of the cement kiln, the residue is provided in the cement kiln and / or before the cement kiln. A method for producing cement using a halogen-containing material fuel conversion system , characterized in that it is burned in a calcining furnace and used as part of fuel. 6. The cement using the halogen-containing fuel conversion system according to claim 5, wherein an adhesion preventing material for preventing the halogen-containing material from adhering to the halogen separating means is supplied to the halogen separating means . Production method.

Images