JPS62216628A - Equipment for neutralizing blast furnace gas - Google Patents
Equipment for neutralizing blast furnace gasInfo
- Publication number
- JPS62216628A JPS62216628A JP61058246A JP5824686A JPS62216628A JP S62216628 A JPS62216628 A JP S62216628A JP 61058246 A JP61058246 A JP 61058246A JP 5824686 A JP5824686 A JP 5824686A JP S62216628 A JPS62216628 A JP S62216628A
- Authority
- JP
- Japan
- Prior art keywords
- blast furnace
- furnace gas
- neutralization
- pipeline
- neutralizing
- 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.)
- Pending
Links
- 230000003472 neutralizing effect Effects 0.000 title description 7
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 150000002500 ions Chemical class 0.000 claims description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 12
- 239000002270 dispersing agent Substances 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000010790 dilution Methods 0.000 abstract description 5
- 239000012895 dilution Substances 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000007921 spray Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000008235 industrial water Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Blast Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用公費〕
本発明は高炉ガスの中和装置の改良に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Public funds for industrial use] The present invention relates to an improvement of a blast furnace gas neutralization device.
従来高炉ガスの集塵システムとしてはベンチュリスクラ
バが主流であったが、最近高炉ガスの保有する圧力及び
熱エネルギーを効率よく回収するために、乾式集塵シス
テムとＴＩＬＴ （圧力回収タービン）との併用が実用
化されている。Venturi scrubbers have traditionally been the mainstream dust collection system for blast furnace gas, but recently dry dust collection systems and TILT (pressure recovery turbines) have been used in combination to efficiently recover the pressure and thermal energy contained in blast furnace gas. has been put into practical use.
第３図は高炉ガスの配管図で、（１）は高炉、（２）は
高炉ガス、（３）は乾式集塵機、（４）はＴＲＴ、（５
１は配管、（６）はガスホルダ、（Ａ）は熱風炉、（［
３）は高炉使用箇所である。Figure 3 is a piping diagram for blast furnace gas, where (1) is the blast furnace, (2) is the blast furnace gas, (3) is the dry dust collector, (4) is the TRT, and (5) is the blast furnace gas.
1 is piping, (6) is gas holder, (A) is hot air stove, ([
3) is the location where a blast furnace is used.
図に示すように高炉（１）の炉頂から出た高炉ガスは、
乾式！＄３１！４ｉＪｌ （例えば電気収Ｗ機）で脱塵
された後、ＴＩＬＴで圧力及び熱を回収され、一部は高
炉（１）の熱風炉（Ａ）の燃焼ガスとして送られるが、
残りはガスホルダ（６）に収容され、あるいは直接各高
炉ガス醍用箇所（Ｂ）へ送られろ。As shown in the figure, the blast furnace gas coming out from the top of the blast furnace (1) is
Dry method! After being dedusted with $31!4iJl (for example, an electric W collector), the pressure and heat are recovered in the TILT, and a portion is sent as combustion gas to the hot blast furnace (A) of the blast furnace (1).
The rest is stored in the gas holder (6) or sent directly to each blast furnace gas supply point (B).
ところで高炉ガスのｉＡ塵に、かっての湿式のベンチュ
リスクラバを利用していた時は、高炉ガス中のＨＣｌ含
有量は約１ ｐｐｎ＋程度で特に問題とすることはなか
ったが、圧力及び熱ロスを少なくするために乾式集塵シ
ステムを採用するに及んで、高炉ガス中のＣｌイオンが
集塵システムで回収されなくなっｔ′Ｓすめ、ガス中の
ＨＣＪの含有量が約２０ｐｐｍ以上にも上るようになり
、ガスが冷却されてドレンを発生すると、ドレンのｐ
ＩＩが下り、第３図におけるガス配管（５）に腐食が認
められろようになった。By the way, when wet Venturi scrubbers were used for iA dust in blast furnace gas, the HCl content in blast furnace gas was about 1 ppn+, which was not a particular problem, but pressure and heat loss were As a dry dust collection system was adopted to reduce the amount of Cl ions in the blast furnace gas, the Cl ions in the blast furnace gas were no longer collected by the dust collection system, and the HCJ content in the gas rose to about 20 ppm or more. When the gas is cooled and condensate is generated, the condensate p
II has fallen, and corrosion can now be seen in the gas pipe (5) in Figure 3.
本発明は上記事態に対処して高炉ガスの酸性を中和する
装置を提供しようとするものである。The present invention aims to provide an apparatus for neutralizing the acidity of blast furnace gas in order to cope with the above-mentioned situation.
上記目的を達成するなめ、高炉ガス配管のＴｒＬＴの後
に、アルカリ性液による中和装置を設置する。In order to achieve the above objective, a neutralization device using an alkaline liquid is installed after the TrLT in the blast furnace gas piping.
上記中和装置を設けることにより、高炉ガス中のＣｌイ
オンは中和され、従って高炉ガスドレンは中性化し、配
管の腐食は防止される。By providing the above neutralization device, Cl ions in the blast furnace gas are neutralized, so the blast furnace gas drain is neutralized, and corrosion of the piping is prevented.
第１図は本発明の一実施例を示す高炉ガス配管の構成図
、第２図は中和散水設備の構成図である。FIG. 1 is a block diagram of a blast furnace gas piping showing an embodiment of the present invention, and FIG. 2 is a block diagram of a neutralization watering equipment.
図中（１１〜（６）は従来装置と同一部品で、α〔は中
和散水設備、ａυは中和散水筒、（支）はアルカリ性液
配管、０３）はノズル、Ｑ４１はＮａＯＨ希釈槽、α９
はスケール分散剤タンク、ａυはポンプ、αりは工業用
水、（ト）は蒸気配管、叫は蒸気である。In the figure, (11 to (6)) are the same parts as the conventional device, α[ is the neutralization water spray equipment, aυ is the neutralization water spray cylinder, (support) is the alkaline liquid piping, 03) is the nozzle, Q41 is the NaOH dilution tank, α9
is the scale dispersant tank, aυ is the pump, α is industrial water, (g) is the steam piping, and is the steam.
図に示すように、高炉ガス（２）は朝式ｍｕ機（３）で
鋭部されＴ ＲＴ ［４１でその圧力と熱を回収された
後、中和散水装置−で中和される。中和散水装置０ωは
第２図にみるように、中和散水筒αυとＮ ａ Ｏ［！
希釈検測とスケール分散剤タンク（５）とそれを繋ぐ配
管Ｑ２）及び蒸気配管（至）とより構成されている。工
業用水面にＮ ａ ＯＨ希釈槽０４）で配合したＮ ａ
ＯＨｆ（１と、スケール分散剤タンクに貯留するスケ
ール分散剤とを夫々ポンプＯ１で注入し、蒸気を利用し
てノズルα３）より中和散水筒内の高炉ガス中に噴霧せ
しめる。Ｎ ａ ＯＨの注入量は、高炉がストレーンの
Ｃｌイオンの中和当量程度が目安であり、スケール分散
剤（アミン系）はノズルの目詰りを防ぐためのものであ
る。噴霧粒経は６０μＩを目標とし、工業用水２５〜３
５ｍ／ｈｒ、蒸気３ ｔ、／ｈｒｒｅ（ｆｊ用している
。As shown in the figure, the blast furnace gas (2) is sharpened by a morning-type mu machine (3), its pressure and heat are recovered by T RT [41], and then neutralized by a neutralization sprinkler device. As shown in Figure 2, the neutralizing water sprinkler device 0ω has the neutralizing water spray tube αυ and N a O[!
It consists of a dilution inspection and scale dispersant tank (5), a pipe connecting it (Q2) and a steam pipe (to). Na mixed on the industrial water surface in Na OH dilution tank 04)
OHf (1) and the scale dispersant stored in the scale dispersant tank are each injected by pump O1, and are sprayed into the blast furnace gas in the neutralization water spray cylinder from nozzle α3 using steam. The amount of N a OH to be injected is approximately equal to the neutralization equivalent of Cl ions in the blast furnace strain, and the scale dispersant (amine type) is used to prevent nozzle clogging. The target spray particle size is 60μI, and industrial water 25-3
5m/hr, steam 3t,/hrre (FJ is used.
本発明はＴＲＴで圧力及び熱を回収された高炉ガス中に
Ｎ ａ ＯＩＩを含有するアルカリ性液を高炉ガスに噴
霧しこれを中和したので、次に述べるような優れた効果
を上げることができた。The present invention neutralizes the blast furnace gas by spraying an alkaline liquid containing NaOII into the blast furnace gas whose pressure and heat have been recovered by TRT. Ta.
■高炉ガス中のＨＣｌが２０ｐｐｍ以上から１ ｐｐｍ
程度までに減少した。■HCl in blast furnace gas ranges from 20 ppm or more to 1 ppm
decreased to a certain extent.
■高炉ガス配管内部に装着したテストクーポンによる腐
食速度（ｍｄｄ）の変化が、中和散水前の３，０００＋
＋＋ｄｄ以上から散水後は約６００ ａｄｄと１１５に
低下した。■The change in corrosion rate (mdd) measured by the test coupon installed inside the blast furnace gas piping was 3,000+ before neutralizing water spraying.
From ++dd or more, it decreased to about 600 add and 115 after watering.
第１図は本発明の一実施例を示す高炉ガス配管の構成図
、第２図は中和散水設備の構成図、第３図は従来の高炉
ガス配管の構成図である。
図中（１）は高炉、（２）は高炉ガス、（３）は乾式ｉ
塵機、（４）はＴＲＴ１α〔は中和散水設備、αυは中
和散水筒、（１７Ｊはアルカリ性液配管、側はノズル、
圓はＮａＯＨ希釈槽、叫はスケール分散剤タンク、Ｏｌ
はポンプ、ａηは工業用水、（至）は蒸気配管、叫は蒸
気である。
代理人 弁理士 佐 藤 正 年
第 １ 図
手続補正書印発）
１゜事件の表示
特願昭６１−５８２４６号
２、発明の名称
高炉ガスの中和装置
３、補正をする者
事件との関係 特許出願人
名 称 （４１２）日本鋼管株式会社４、代理人
住 所 東京都港区虎ノ門五丁目８番６号アミタビ
ル
５、補正の対象
（１）明細書の「発明の詳細な説明」の欄（１） 明
細書第２頁第２行「高炉使用箇所である。」を「その他
高炉ガス使用箇所である。」に補正する。
（２） 明細書の第２頁第４行「屹式果塵機（例えば
電気収部機）・・・・・・」を「乾式集！Ｍ機（例えば
電気ａｍ機）・・・・・・」に補正する。
（３） 明細書第４頁第９行「・・・・・・、高炉ガ
ストレーへ
する。FIG. 1 is a block diagram of a blast furnace gas piping according to an embodiment of the present invention, FIG. 2 is a block diagram of a neutralization watering equipment, and FIG. 3 is a block diagram of a conventional blast furnace gas pipe. In the figure, (1) is a blast furnace, (2) is a blast furnace gas, and (3) is a dry i
Dust machine, (4) is TRT1α [is neutralizing water spray equipment, αυ is neutralizing water spray cylinder, (17J is alkaline liquid piping, nozzle on the side,
En is NaOH dilution tank, shout is scale dispersant tank, Ol
is a pump, aη is industrial water, (to) is steam piping, and is steam. Agent Patent Attorney Tadashi Sato 1st year 1st drawing procedure amendment (sealed) 1゜Indication of the case Japanese Patent Application No. 1982-58246 2, Name of the invention Blast Furnace Gas Neutralization Device 3, Relationship with the person making the amendment case Patent Applicant Name (412) Nippon Kokan Co., Ltd. 4, Agent Address 5 Amita Building, 5-8-6 Toranomon, Minato-ku, Tokyo, Subject of Amendment (1) "Detailed Description of the Invention" column of the specification ( 1) On page 2 of the specification, line 2, "It is a place where blast furnaces are used." is amended to "It is other places where blast furnace gas is used." (2) In the 4th line of page 2 of the specification, "Dry type dust collecting machine (e.g. electric am collecting machine)..." is changed to "Dry collecting machine! M machine (e.g. electric AM machine)..."・Correct to "." (3) Page 4, line 9 of the specification: ``..., transfer to the blast furnace gas tray.''
Claims (1)
いて、アルカリ性液による中和装置を備えて、該高炉ガ
ス中のＣｌイオンを除去しうるように構成したことを特
徴とする高炉ガスの中和装置。A blast furnace gas neutralization device characterized in that a blast furnace gas piping for removing dust by a dry dust collection system is equipped with a neutralization device using an alkaline liquid to remove Cl ions from the blast furnace gas. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61058246A JPS62216628A (en) | 1986-03-18 | 1986-03-18 | Equipment for neutralizing blast furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61058246A JPS62216628A (en) | 1986-03-18 | 1986-03-18 | Equipment for neutralizing blast furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62216628A true JPS62216628A (en) | 1987-09-24 |
Family
ID=13078763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61058246A Pending JPS62216628A (en) | 1986-03-18 | 1986-03-18 | Equipment for neutralizing blast furnace gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62216628A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016176134A (en) * | 2015-03-18 | 2016-10-06 | 河北聯合大学Ｈｅｂｅｉ Ｕｎｉｔｅｄ Ｕｎｉｖｅｒｓｉｔｙ | Method for application of antichlor to blast furnace gas |
| CN115141660A (en) * | 2022-08-02 | 2022-10-04 | 江苏省环境工程技术有限公司 | Blast furnace gas dry-type fine desulfurization system and fine desulfurization method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5089267A (en) * | 1973-12-12 | 1975-07-17 | ||
| JPS5091068A (en) * | 1973-12-17 | 1975-07-21 | ||
| JPS5599376A (en) * | 1979-01-25 | 1980-07-29 | Nippon Kokan Kk <Nkk> | Evaporation treating method of hydrogen chloride gas scrubbing waste liquid |
-
1986
- 1986-03-18 JP JP61058246A patent/JPS62216628A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5089267A (en) * | 1973-12-12 | 1975-07-17 | ||
| JPS5091068A (en) * | 1973-12-17 | 1975-07-21 | ||
| JPS5599376A (en) * | 1979-01-25 | 1980-07-29 | Nippon Kokan Kk <Nkk> | Evaporation treating method of hydrogen chloride gas scrubbing waste liquid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016176134A (en) * | 2015-03-18 | 2016-10-06 | 河北聯合大学Ｈｅｂｅｉ Ｕｎｉｔｅｄ Ｕｎｉｖｅｒｓｉｔｙ | Method for application of antichlor to blast furnace gas |
| CN115141660A (en) * | 2022-08-02 | 2022-10-04 | 江苏省环境工程技术有限公司 | Blast furnace gas dry-type fine desulfurization system and fine desulfurization method |
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