JP5589303B2 - Coke oven gas alternative fuel gas flow rate setting method and coke oven gas alternative fuel gas manufacturing method - Google Patents
Coke oven gas alternative fuel gas flow rate setting method and coke oven gas alternative fuel gas manufacturing method Download PDFInfo
- Publication number
- JP5589303B2 JP5589303B2 JP2009103763A JP2009103763A JP5589303B2 JP 5589303 B2 JP5589303 B2 JP 5589303B2 JP 2009103763 A JP2009103763 A JP 2009103763A JP 2009103763 A JP2009103763 A JP 2009103763A JP 5589303 B2 JP5589303 B2 JP 5589303B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- dilution
- calorific value
- composition
- coke oven
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007789 gas Substances 0.000 title claims description 150
- 239000002737 fuel gas Substances 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 15
- 239000000571 coke Substances 0.000 title claims description 10
- 238000005005 fuel gas manufacturing Methods 0.000 title 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 38
- 239000012895 dilution Substances 0.000 claims description 32
- 238000010790 dilution Methods 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 29
- 239000003345 natural gas Substances 0.000 claims description 19
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000003915 liquefied petroleum gas Substances 0.000 claims description 4
- 239000003085 diluting agent Substances 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Images
Landscapes
- Feeding And Controlling Fuel (AREA)
- Regulation And Control Of Combustion (AREA)
Description
本発明は、コークス炉ガス代替燃料ガスの混合制御方法及びその製造方法に関するものである。 The present invention relates to a method for controlling the mixing of coke oven gas substitute fuel gas and a method for manufacturing the same.
製鉄所で発生するコークス炉ガス（以下Ｃガスと呼ぶ）は、鋼材加熱炉、熱処理炉、焼鈍炉や焼結炉など製鉄プロセスの燃料として広く使用されている。Ｃガスは、製鉄所で発生する他のガスに比べて発熱量が高いので、製鉄所内での用途が多いことから、種々の設備に使用される結果、製鉄プロセスで必要とするＣガス需要がＣガス発生量を上回る場合がある。 Coke oven gas (hereinafter referred to as C gas) generated at ironworks is widely used as a fuel for iron making processes such as steel heating furnaces, heat treatment furnaces, annealing furnaces and sintering furnaces. Since C gas has a higher calorific value than other gases generated in steelworks, it has many uses in steelworks, and as a result, it is used in various facilities, resulting in demand for C gas required in steelmaking processes. C gas generation amount may be exceeded.
この場合、各工場では、不足する熱量を天然ガスや液化石油ガス等の高カロリの外部購入燃料により補うか、Ｃガスと別系統で供給設備及び燃焼設備を設けるか、代替燃料ガスの混合度合いに合わせてＣガス流量や燃焼空気量を自動的に変更する機能を持たせる必要がある。 In this case, in each factory, the shortage of heat is supplemented with high-calorie externally purchased fuel such as natural gas or liquefied petroleum gas, supply equipment and combustion equipment are provided separately from C gas, or the degree of mixing of alternative fuel gas It is necessary to have a function of automatically changing the C gas flow rate and the combustion air amount in accordance with the above.
特許文献１には製鉄所からの種々の燃料ガスを混合し、発電所のガスタービンの運転状況に合わせて燃料ガスを供給する全体構成が開示されている。本構成は図３に示すように、製鉄所のコークス炉、高炉、転炉よりそれぞれＣガス、高炉ガス（以下Ｂガスと呼ぶ）、転炉ガス（以下ＬＤガスと呼ぶ）を各々別系統で配管し、発電所側にこれらのガスを混合するガス混合器を備え、計算機システムでは、発電所で使用可能な燃料ガス量および発熱量を算出し、ガスタービンで使用する燃料ガスの種類および発熱量を決定し、その結果をガス混合器に送り、ガスタービンへ供給する燃料ガス量や発熱量を制御するように構成されている。
しかし、本構成でも、Ｃガスは製鉄所での用途が多いことから発電所への供給が不安定であり、Ｃガスの供給が停止または減少した場合、ガス専焼運転が継続できなくなるので、重油燃焼用バーナをも併設しており維持管理費が割高となっている。 However, even in this configuration, C gas has many uses in steelworks, so the supply to the power plant is unstable, and if the supply of C gas is stopped or reduced, the gas-only firing operation cannot be continued. A combustion burner is also installed, and maintenance costs are high.
解決しようとする問題点は、Ｃガスの使用工場が多岐に渡る場合に、その各々についてＣガス不足時の対策を行う（天然ガスや液化石油ガス等の高カロリガスの購入やＢガス、Ｃガス、ＬＤガス配管を個別に敷設する等）と膨大な設備費がかかる点である。 The problem to be solved is that when there are a wide variety of factories that use C gas, measures are taken when there is a shortage of C gas for each of them (purchase of high calorie gas such as natural gas or liquefied petroleum gas, B gas, C gas, etc. , LD gas pipes are individually laid) and so on, and a huge facility cost is required.
そこで、各使用工場側での燃焼設備の改造なしに熱量が安定した代替燃料ガスを提供する。 Therefore, an alternative fuel gas with a stable calorific value is provided without modification of the combustion facility at each use factory.
発明者は、上述した課題を鋭意検討し、発明を完成したもので、その要旨は以下の通りである。 The inventor diligently studied the above-described problems and completed the invention, and the gist thereof is as follows.
第一の発明は、必要擬似Cガス量から仮希釈率を設定する工程と、天然ガス組成と希釈ガス組成およびCガス組成から擬似Cガス組成および調整Cガス組成を計算する工程と、前記調整Cガス組成から理論空気量と単位発熱量を計算し、該単位発熱量とCガスの単位発熱量との差異が許容設定範囲内であるか否かを判定する工程と、決定された希釈率から天然ガスの流量および希釈ガスの流量を設定する工程と、前記調整Cガスの理論空気量と単位発熱量の実測値から天然ガスおよび希釈ガスの流量設定値を変更する工程とからなることを特徴とする天然ガスおよび希釈ガスの混合制御方法である。 The first invention includes a step of setting a provisional dilution ratio from a necessary pseudo C gas amount, a step of calculating a pseudo C gas composition and an adjusted C gas composition from a natural gas composition, a diluted gas composition, and a C gas composition, and the adjustment Calculating the theoretical air amount and unit calorific value from the C gas composition, determining whether the difference between the unit calorific value and the unit calorific value of C gas is within the allowable setting range, and the determined dilution rate From the step of setting the flow rate of the natural gas and the dilution gas, and the step of changing the flow rate setting values of the natural gas and the dilution gas from the measured theoretical air amount and unit calorific value of the adjusted C gas. This is a method for controlling the mixing of natural gas and dilution gas.
第二の発明は、第一の発明に記載の天然ガスおよび希釈ガスの流量制御方法を用いて製造された調整Cガスを、コークス炉ガス配管に接続して、製鉄所内燃料ガスとしたことを特徴とするコークス炉ガス代替燃料ガスの製造方法である。 The second invention is that the adjusted C gas produced by using the natural gas and dilution gas flow rate control method described in the first invention is connected to a coke oven gas pipe to obtain a fuel gas in a steelworks. It is the manufacturing method of the coke oven gas alternative fuel gas characterized.
燃料ガス製造元側でＣガスと同等の燃焼特性を有するＣガス代替燃料（疑似Ｃガス）を調整して、調整Cガスとし、各燃料使用工場に送るようにしたので、燃料ガス使用設備側で個別に設備改造をすることなくＣガス代替燃料を使用できるようになる。 The fuel gas manufacturer adjusted the C gas alternative fuel (pseudo C gas) that has the same combustion characteristics as C gas to make the adjusted C gas and sent it to each fuel use factory. The C gas alternative fuel can be used without individually modifying the equipment.
本願発明を図面に従って説明する。
まず図1のフローで使用するガスについて説明する。
擬似Cガスとは、不足するCガスの代替燃料ガスとして使用するガスであり、高カロリガスと低カロリガス（以下希釈ガスと呼ぶ）を混合したガスをいい、高カロリガスとしては、市販の天然ガスや液化石油ガスを、希釈ガスとしては、製鉄所内で発生するＢガスやＬＤガスを使用する。
The present invention will be described with reference to the drawings.
First, the gas used in the flow of FIG. 1 will be described.
Pseudo C gas is a gas used as an alternative fuel gas for the lack of C gas, and refers to a mixture of high and low calorie gas (hereinafter referred to as dilution gas). As the liquefied petroleum gas and diluent gas, B gas and LD gas generated in the steel works are used.
調整Cガスとは、擬似Cガスを補充混合したCガスをいい、その理論空気量や単位発熱量はCガスとほぼ同等となるように調整されている。 Adjusted C gas refers to C gas supplemented and mixed with pseudo C gas, and its theoretical air volume and unit calorific value are adjusted to be almost the same as C gas.
本発明に使用したガスの代表的発熱量は以下のとおりである。Ｃガスの発熱量は21ＭＪ／Ｎｍ３、Ｂガスの発熱量は3．4ＭＪ／Ｎｍ３、ＬＤガスの発熱量は8.4ＭＪ／Ｎｍ３、天然ガスの発熱量は41ＭＪ／Ｎｍ３、であり、各ガスの発熱量をＣガスの発熱量と比較すると、Ｂガスは1／6、ＬＤガスは1／2．5、天然ガスは2倍となる。
次に、本発明のＣガスの発生と需要のバランスから必要な疑似Ｃガス量（熱量）を求めるフローを説明する。
The typical calorific value of the gas used in the present invention is as follows. The calorific value of C gas is 21 MJ / Nm 3 , the calorific value of B gas is 3.4 MJ / Nm 3 , the calorific value of LD gas is 8.4 MJ / Nm 3 , and the calorific value of natural gas is 41 MJ / Nm 3 , Comparing the calorific value of each gas with the calorific value of C gas, B gas is 1/6, LD gas is 1 / 2.5, and natural gas is doubled.
Next, a flow for obtaining the required pseudo C gas amount (heat amount) from the balance between generation and demand of C gas according to the present invention will be described.
Ｓ１：Ｃガス発生量、消費量、バッファー能力等（Ｓ１１）を勘案して必要な疑似ガス製造量を決定する。 S1: A necessary pseudo gas production amount is determined in consideration of C gas generation amount, consumption amount, buffer capacity, etc. (S11).
Ｓ２：入手可能な希釈ガス量も勘案して仮希釈率を設定する。 S2: The provisional dilution rate is set in consideration of the amount of dilution gas available.
Ｓ３：使用する天然ガスの組成および希釈ガスの組成（Ｓ１２）と希釈率とから疑似Ｃガスの組成を計算する。 S3: The pseudo C gas composition is calculated from the composition of the natural gas to be used, the composition of the dilution gas (S12), and the dilution rate.
Ｓ４：Ｓ３で計算した疑似Ｃガス組成と通常使用しているＣガスの組成とからこれらのガスを混合してできる調整Ｃガスの組成を計算する。 S4: The composition of the adjusted C gas, which is obtained by mixing these gases, is calculated from the pseudo C gas composition calculated in S3 and the normally used C gas composition.
Ｓ５：Ｓ４で計算された調整Ｃガスの組成から燃焼に必要な理論空気量と発熱量を計算する。 S5: The theoretical air amount and calorific value necessary for combustion are calculated from the composition of the adjusted C gas calculated in S4.
Ｓ６：計算した燃焼に必要な理論空気量と発熱量が予め設定しておいた理論空気量と発熱量の許容範囲外の場合は、希釈率を変更して（Ｓ１０）再計算する（Ｓ２）。許容範囲内（Cガスの理論空気量および単位発熱量と同等となる範囲）であれば次のステップ（Ｓ７）に進む。 S6: If the calculated theoretical air amount and calorific value necessary for combustion are outside the allowable range of the preset theoretical air amount and calorific value, change the dilution rate (S10) and recalculate (S2) . If it is within the allowable range (a range equivalent to the theoretical air amount and unit calorific value of C gas), the process proceeds to the next step (S7).
Ｓ７：希釈率を決定する。 S7: Determine the dilution rate.
Ｓ８：天然ガスおよび希釈ガスの流量を設定する。 S8: Set the flow rates of natural gas and dilution gas.
Ｓ９：調整Cガスの理論空気量、単位発熱量の実測値（Ｓ１４）が予め設定しておいた理論空気量と発熱量の許容範囲内（Cガスの理論空気量および単位発熱量と同等となる範囲）に無い場合は希釈率を変更（Ｓ１０）して再計算する（Ｓ２）。許容範囲内であればＳ１５に進む。 S9: The theoretical air amount of adjustment C gas and the actual measured value of unit calorific value (S14) are within the allowable range of the theoretical air amount and calorific value set in advance (equivalent to the theoretical air amount and unit calorific value of C gas) If not, the dilution rate is changed (S10) and recalculated (S2). If it is within the allowable range, the process proceeds to S15.
Ｓ１５：天然ガスおよび希釈ガスの流量設定を維持する。 S15: Maintain the natural gas and dilution gas flow settings.
図２は疑似Cガスの混合設備の概略を説明する図である。図中１はCガス組成測定装置を、２は天然ガス組成測定装置を、３は希釈ガス組成測定装置を、４は調整ガス組成測定装置を、５は天然ガス流量制御弁を、６は希釈ガス流量制御弁を、７は疑似Cガス流量制御弁を表す。製鉄所内のガス製造設備側でCガスと同等の燃焼特性を有する疑似Cガスを製造して、既存のCガス配管に接続するようにしたので、ガス使用設備側で天然ガス等を燃焼させるための設備改造をすることなく、Cガス代替燃料（疑似Cガス）が既存のCガス配管を使って使用できるようになる。
FIG. 2 is a diagram for explaining the outline of the pseudo-C gas mixing facility. In the figure, 1 is a C gas composition measuring device, 2 is a natural gas composition measuring device, 3 is a diluted gas composition measuring device, 4 is a regulated gas composition measuring device, 5 is a natural gas flow control valve, and 6 is diluted.
１ Cガス組成測定装置
２ 天然ガス組成測定装置
３ 希釈ガス組成測定装置
４ 調整ガス組成測定装置
５ 天然ガス流量制御弁
６ 希釈ガス流量制御弁
７ 疑似Cガス流量制御弁
1 C Gas
Claims (2)
Ｓ１：Ｃガス発生量、消費量、バッファー能力等を勘案して必要な疑似Ｃガス製造量を決定する。
Ｓ２：入手可能な希釈ガス量も勘案して仮希釈率（高カロリガスに希釈ガスとして混合する低カロリガスの仮設定した割合（希釈率））を設定する。
Ｓ３：使用する高カロリガスの組成および希釈ガスの組成と仮希釈率とから疑似Ｃガスの組成を計算する。
Ｓ４：Ｓ３で計算した疑似Ｃガス組成と使用しているＣガスの組成とからこれらのガスを混合してできる調整Ｃガスの組成を計算する。
Ｓ５：Ｓ４で計算された調整Ｃガスの組成から燃焼に必要な理論空気量と発熱量を計算する。
Ｓ６：Ｓ５で計算された燃焼に必要な理論空気量と発熱量が予め設定しておいた理論空気量と発熱量の許容範囲外の場合は、Ｓ２に進み仮希釈率を変更して設定し、許容範囲内（Ｃガスの理論空気量および単位発熱量と同等となる範囲）であれば、次のステップ（Ｓ７）に進む。
Ｓ７：前記仮希釈率を希釈率として決定する。
Ｓ８：Ｓ１で決定した擬似Ｃガス製造量とＳ７で決定した希釈率とから、高カロリガスおよび希釈ガスの流量を設定する。
Ｓ９：調整Ｃガスの理論空気量、単位発熱量の実測値が予め設定しておいた理論空気量と発熱量の許容範囲内（Ｃガスの理論空気量および単位発熱量と同等となる範囲）に無い場合は、Ｓ２に進み仮希釈率を変更して設定し、許容範囲内であればＳ１５に進む。
Ｓ１５：高カロリガスおよび希釈ガスの流量設定を維持する。 A gas (hereinafter referred to as a "pseudo C gas") mixed with natural gas or liquefied petroleum gas as high calorie gas and low calorie gas (blast furnace gas (B gas) or converter gas (LD gas)) generated in the steelworks as a diluent gas In the production of a gas supplemented and mixed with coke oven gas (hereinafter referred to as C gas) (hereinafter referred to as adjusted C gas), a flow rate setting method for high calorie gas and dilution gas in steps S1 to S15 described below.
S1: A necessary pseudo C gas production amount is determined in consideration of C gas generation amount, consumption amount, buffer capacity, and the like.
S2: A provisional dilution rate (a temporarily set ratio (dilution rate) of low calorie gas mixed as dilution gas with high calorie gas) is set in consideration of the amount of available dilution gas.
S3: Calculate the composition of the pseudo C gas from the composition of the high calorie gas used, the composition of the dilution gas, and the temporary dilution rate.
S4: From the pseudo C gas composition calculated in S3 and the composition of the C gas used, the composition of the adjusted C gas formed by mixing these gases is calculated.
S5: The theoretical air amount and calorific value necessary for combustion are calculated from the composition of the adjusted C gas calculated in S4.
S6: If the theoretical air amount and calorific value necessary for combustion calculated in S5 are outside the allowable range of the theoretical air amount and calorific value set in advance , proceed to S2 and change the temporary dilution rate to set If it is within the allowable range (a range equivalent to the theoretical air amount and unit calorific value of C gas), the process proceeds to the next step (S7).
S7: The temporary dilution rate is determined as the dilution rate.
S8: The flow rates of the high calorie gas and the dilution gas are set from the pseudo C gas production amount determined in S1 and the dilution rate determined in S7.
S9: The theoretical air amount and unit calorific value of the adjusted C gas are within the allowable range of the theoretical air amount and calorific value set in advance (range equivalent to the theoretical air amount and unit calorific value of C gas). If not , the process proceeds to S2 and the temporary dilution ratio is changed and set . If it is within the allowable range, the process proceeds to S15.
S15: Maintain the flow settings of high calorie gas and dilution gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009103763A JP5589303B2 (en) | 2009-04-22 | 2009-04-22 | Coke oven gas alternative fuel gas flow rate setting method and coke oven gas alternative fuel gas manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009103763A JP5589303B2 (en) | 2009-04-22 | 2009-04-22 | Coke oven gas alternative fuel gas flow rate setting method and coke oven gas alternative fuel gas manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010254753A JP2010254753A (en) | 2010-11-11 |
| JP5589303B2 true JP5589303B2 (en) | 2014-09-17 |
Family
ID=43316050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009103763A Expired - Fee Related JP5589303B2 (en) | 2009-04-22 | 2009-04-22 | Coke oven gas alternative fuel gas flow rate setting method and coke oven gas alternative fuel gas manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5589303B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5187504A (en) * | 1975-01-30 | 1976-07-31 | Nippon Steel Corp | NENRYOGASUNOKONGOHOHO |
| JPS523602A (en) * | 1975-06-24 | 1977-01-12 | Nippon Steel Corp | Apparatus for producing a fuel gas |
-
2009
- 2009-04-22 JP JP2009103763A patent/JP5589303B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010254753A (en) | 2010-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101270880B (en) | Air-fuel ratio control system of combustion heating furnace | |
| CN102364252B (en) | Automatic intelligent double cross limiting range combustion control method for heating furnace | |
| CN101561224A (en) | Method for controlling combustion atmosphere in large-scale walking beam type plate blank heating furnace | |
| CN102937382B (en) | Adjusting and optimizing method of ratio-controlled combustion system | |
| CN109307437A (en) | A kind of the optimization combustion control system and its method of heat accumulating type industrial heating furnace | |
| CN202494351U (en) | Detection and regulation system of ore-smelting electric furnace furnace-chamber pressure | |
| CN108800968A (en) | A kind of hot rolling pulse heating furnace method for controlling combustion | |
| CN106011353A (en) | Self-optimization method for air-fuel ratio of blast-furnace hot blast stove | |
| JP5589303B2 (en) | Coke oven gas alternative fuel gas flow rate setting method and coke oven gas alternative fuel gas manufacturing method | |
| KR100703557B1 (en) | A mixing method of off-gases from steel works to reduce fluctuation of the heating value of the mixed gas | |
| JP5162228B2 (en) | Boiler equipment | |
| WO2020233106A1 (en) | Coke oven positive pressure heating system and temperature control method | |
| CN109112288B (en) | Temperature adjusting method of annealing furnace | |
| CN104791107B (en) | A kind of gas turbine combustion control device and method | |
| CN205670267U (en) | Coal gas of converter and natural gas mixed control apparatus | |
| CN105349724B (en) | Coal gas of converter mingled burning installation for hot-blast stove | |
| US20180372315A1 (en) | Electronic control module and method for controlling the operation and safety of at least one radiant tube burner | |
| CN111811257B (en) | Heating furnace combustion control method and device | |
| CN109579044B (en) | Air-fuel ratio dynamic feedforward combustion control method for walking beam furnace | |
| JP4742948B2 (en) | Gas supply system in steelworks | |
| CN103162527A (en) | Vertical melting furnace premix type combustion system | |
| JP2008175465A (en) | Combustion method of industrial furnace | |
| CN202393197U (en) | Premixing combustion system for vertical melting furnace | |
| JP2009174741A (en) | Ground flare and its combustion control method | |
| CN112556441A (en) | Steel rolling heating furnace and dynamic control method for asymmetric characteristics of flue gas pipe network thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20120321 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20120327 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20120402 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20131217 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20140214 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140415 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20140611 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20140701 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20140714 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5589303 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |