JPS5855601A - Economizer for low temperature - Google Patents
Economizer for low temperatureInfo
- Publication number
- JPS5855601A JPS5855601A JP56152858A JP15285881A JPS5855601A JP S5855601 A JPS5855601 A JP S5855601A JP 56152858 A JP56152858 A JP 56152858A JP 15285881 A JP15285881 A JP 15285881A JP S5855601 A JPS5855601 A JP S5855601A
- Authority
- JP
- Japan
- Prior art keywords
- borosilicate glass
- glass tube
- side plates
- holes
- economizer
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Air Supply (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は低温用エコノマイザ−の構造に関する５本発明
者は永年間硼硅酸ガラス管を使用した低温用空気予熱器
の普及に努力してきた。本発明は該低温用予熱器と同じ
硼硅酸ガラス管と該ガラス管を側板に気密に支持させる
手段を有する、低温用エコノマイザ−の発明であるから
、本発明の説明に先立ち、先づ低温用空気予熱器の説明
をする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a low-temperature economizer.The present inventor has been making efforts for many years to popularize low-temperature air preheaters using borosilicate glass tubes. Since the present invention is an invention of a low temperature economizer having the same borosilicate glass tube as the low temperature preheater and means for airtightly supporting the glass tube on a side plate, prior to explaining the present invention, the low temperature economizer will be explained first. Explain the air preheater.
ボイラーで硫黄分を可成多量含有する燃料を燃焼させれ
ば硫黄分を含んだ燃焼排ガスが生じ、それが露点近くま
で低温になれば極めて腐食性のガスになり、空気予熱器
やエコノマイザーを腐食させる。本発明者はボイラーで
使用する空気予熱器を多段に設計し、高温の燃焼排ガス
が通る段の空気予燃器は鋳鉄材構造にし、燃焼排ガスが
低温になった最後段の低温用空気予熱器は、第１図、第
２図に示す硼硅酸ガラス管を使用した構造にして、空気
予熱器が腐食されるのを防止しているっすなわち、この
低温用空気予熱器の構造は、多数の硼硅酸ガラス管１．
１′・・・の両側部においてそれぞれ側板２．３を設け
、これら両側板２．３はいずれも孔４．４′・・・およ
び孔５゜５′・・・多数を設け、各硼硅酸ガラス管はそ
の両側部をこれら側板の孔に通してたとえば水平に位置
させ、該両側板の内側面をおおってテフロンシート製大
面積成形品６、γを設け、これら大面積成形品にそれぞ
れ７ランジ付孔８．８′・・・および９．９′・・・を
設け、また該両側板の外側面にそれぞれ頭付ねじなどの
固着手段によって該側板と固着させて多数のテフロンシ
ート製小面積成形品＄０．Ｉｎ’・・・および１１．１
１′・・・を設け、これら小面積成形品にそれぞれフラ
ッジ付孔１２および１３を設け、各硼硅酸ガラス管は、
これら大面積成形品のフランジ付孔と小面積成形品の７
ラノジ付孔内を貫通させることによって側板に気密に固
定して支持する。空気予熱器の外周は断熱材１４で囲い
、容器１５内に収容しユニット型にする。燃焼ガスは、
矢印で示すごとく、該空気予５熱器の側板間の水平に硼
硅酸ガラス管多数が配置されているスペースの管の外側
を縫って通る。空気は送風機１６によって供給管１７を
通り、先づ左側板３の外側の室１８に入り、次にいずれ
かの硼硅酸ガラス管１内を通って加熱されて右側板２の
外側の室１９に入り、排出管２０によって取出される。Combustion of fuel with a significant amount of sulfur in a boiler produces sulfur-containing flue gas, which, when cooled to near the dew point, becomes an extremely corrosive gas that requires the use of air preheaters and economizers. Corrode. The inventor designed the air preheater used in the boiler to have multiple stages.The air preheater in the stage through which high-temperature combustion exhaust gas passes is made of cast iron, and the low-temperature air preheater in the last stage, where the combustion exhaust gas is cooled, is designed to have multiple stages. The air preheater is constructed using borosilicate glass tubes as shown in Figures 1 and 2 to prevent corrosion of the air preheater.In other words, the structure of this low temperature air preheater is Borosilicate glass tube 1.
Side plates 2.3 are provided on both sides of 1'..., and each of these side plates 2.3 is provided with a large number of holes 4, 4'... and 5゜5'... The acid glass tube is placed, for example, horizontally by passing its both sides through the holes in these side plates, and large-area molded products 6 and γ made of Teflon sheets are provided covering the inner surfaces of the both-side plates, and each of these large-area molded products is 7 flange holes 8.8'... and 9.9'... are provided, and a large number of Teflon sheets are fixed to the outer surfaces of the side plates by fixing means such as head screws. Small area molded product $0. In'... and 11.1
1'... are provided, and these small-area molded products are provided with flanged holes 12 and 13, respectively, and each borosilicate glass tube is
These flanged holes for large-area molded products and 7 for small-area molded products
By passing through the grooved hole, it is airtightly fixed and supported on the side plate. The outer periphery of the air preheater is surrounded by a heat insulating material 14, and the air preheater is housed in a container 15 to form a unit type. The combustion gas is
As shown by the arrow, it threads around the outside of the space where a number of borosilicate glass tubes are placed horizontally between the side plates of the air preheater. The air is passed through the supply pipe 17 by the blower 16 and first enters the outer chamber 18 of the left side panel 3, then passes through one of the borosilicate glass tubes 1 and is heated to the outer chamber 19 of the right side panel 2. and is taken out by the discharge pipe 20.
この低温用空気予熱器においては腐食性燃焼ガスは両側
が耐食性のテフロンシート製大面積成形品で囲われ、か
つ通路には耐食性の硼硅酸ガラス管多数を水平に位置さ
せた通路の管外側を縫って通り、該硼硅酸ガラス管内を
通る空気に熱を伝えるが、低温用空気予熱器のいずれの
部分にも腐食を生ぜしめないつ本発明は、硫黄分を含ん
だ燃焼排ガスの通路に致達のエコノマイザ−を設けて給
水の８口熱を行う場合燃焼排ガスの温度が２８０℃以上
の高温部においては従来通りの鋳鉄製エコノマイザ−を
設けるが、燃焼ガスが２８０６Ｃ以下の低温になり、腐
食性になれば、耐食性の硼硅酸ガラス管と耐食性のテフ
ロンシート製気密支持手段を使った本発明の低温用エコ
ノマイザ−を採用し、腐食問題を解決するものである。In this low-temperature air preheater, the corrosive combustion gas is surrounded on both sides by large-area molded parts made of corrosion-resistant Teflon sheets, and the passageway has many corrosion-resistant borosilicate glass tubes placed horizontally on the outside of the passageway. The present invention provides a passageway for sulfur-containing flue gas that transfers heat to the air passing through the borosilicate glass tube without causing corrosion to any part of the low-temperature air preheater. When installing an economizer to provide 8-hole heating for water supply, a conventional cast iron economizer will be installed in high-temperature areas where the combustion exhaust gas temperature is 280°C or higher, but the combustion gas will be at a low temperature of 2806°C or lower. If it becomes corrosive, the low-temperature economizer of the present invention, which uses a corrosion-resistant borosilicate glass tube and a corrosion-resistant Teflon sheet airtight support means, is adopted to solve the corrosion problem.
ただし、本発明の低温用エコノマイザ−は使用する硼硅
酸ガラス管に２ ｋｉ、ｆｆｌ以七の水圧をかけること
ができないので、給水ポ／プのサクショノ側に低温用エ
コノマイザ−の排出管を連結して硼硅酸ガラス管内の水
が高水圧にならないようにしている。また各硼硅酸ガラ
ス管内で殊に低圧のため沸騰が生じる惧があり、このた
め管端を隣同志Ｕ字管で連結して水を流し、水は硼硅酸
ガラス管内を停滞することなく比較的高速で円滑に順次
流れる構造にして、水がエコノ・マイザー内で沸騰する
ことによる害を最少にとどめるように配慮されている。However, since the low-temperature economizer of the present invention cannot apply a water pressure of more than 2 ki, ffl to the borosilicate glass tube used, the discharge pipe of the low-temperature economizer must be connected to the suction side of the water supply pop. This prevents the water inside the borosilicate glass tube from reaching high water pressure. In addition, there is a risk of boiling occurring within each borosilicate glass tube due to the particularly low pressure, so the tube ends are connected with adjacent U-shaped tubes to allow water to flow through the borosilicate glass tubes without stagnation. The structure is designed to flow smoothly and sequentially at relatively high speeds to minimize the harm caused by water boiling inside the economizer.
本発明の低温用エコノマイザ−をその実施例を示す第３
図、第４図によってさらに詳細に説明する。−
多数の硼硅酸ガラス管２１．２１’・・・の両側部にお
いてそれぞれ側板２２．２３を設け、これら両側板２２
．２３に孔２４．２４′・・・および孔２５．２５′・
・・多数を設け、各硼硅酸ガラス管はその両側端部をこ
れら側板の孔に通してたとえば水平に位置させる。硼硅
酸ガラスとは普通の硅素を主成分とするガラスに酸化硼
素多量を含ませ、塩基や酸に対する抵抗を高め、熱的諸
性質を高めたガラスである。The third embodiment of the low-temperature economizer of the present invention is shown below.
This will be explained in more detail with reference to FIG. - Side plates 22, 23 are provided on both sides of a large number of borosilicate glass tubes 21, 21'..., and these side plates 22
．． 23 has holes 24.24'... and holes 25.25'.
... A large number of borosilicate glass tubes are provided, and each borosilicate glass tube is positioned, for example, horizontally, with its both ends passed through the holes in these side plates. Borosilicate glass is a glass whose main component is ordinary silicon, but which contains a large amount of boron oxide to increase its resistance to bases and acids and improve its thermal properties.
硼硅酸ガラス管の径はたとえば外径が５０１Ｊｒｍ内径
が４５間である。The diameter of the borosilicate glass tube is, for example, an outer diameter of 501 Jrm and an inner diameter of 45 Jrm.
該両側板の内側面を全面的に蓋ってテフロンシート製大
面積成形品２６．２１を設ける。The inner surfaces of both side plates are completely covered with large area molded products 26 and 21 made of Teflon sheets.
これら大面積成形品２６．２Ｔに、側板２２．２３の孔
２４．２４′・・・および２５．２５′・・・の位置に
、それぞれフランジ付孔２８．２８′・・・および２９
．２９′・・・を設ける。これらフランジ付孔２８．２
９は硼硅酸ガラス管２１の外径より若干小径に成形され
ている。また該両側板の孔２４，２４’・・・および２
５．２５′・・・の位置の外側に頭付ねじなどの固着手
段によって側板外側に固着させてテフロンシート製小面
積成形品３０．３０′・・・および３１．３１’・・・
を設ける。これら小面積成形品３０．３０′・・・と３
１．３１′・・・はいづれもその中央部にフランジ付孔
３２．３２′・・・：ｒ６よび３３．３・３′・・・を
設ける。これらのフラッジ付孔３２．３３は硼硅酸ガラ
ス管２菖の外径より若干小径に成形されている。各硼硅
酸ガラス管２１はその両側部において、これら孔３２，
２ Ｂおよび２９．３３をおしひろげて通すことによっ
て硼硅酸ガラス管は気密に側板に支持される。These large-area molded parts 26.2T are provided with flanged holes 28.28' and 29 at the positions of the holes 24.24' and 25.25' of the side plate 22.23, respectively.
．． 29'... is provided. These flanged holes 28.2
9 is formed to have a slightly smaller diameter than the outer diameter of the borosilicate glass tube 21. Also, the holes 24, 24'... and 2 on both side plates
5. Small area molded products made of Teflon sheets 30.30'... and 31.31'... are fixed to the outside of the side plate by means of fixing means such as head screws at positions 5.25'... and 31.31'...
will be established. These small area molded products 30, 30'... and 3
1.31'... are provided with flanged holes 32, 32'...: r6 and 33.3, 3'... in the center thereof. These flagged holes 32 and 33 are formed to have a slightly smaller diameter than the outer diameter of the two borosilicate glass tubes. Each borosilicate glass tube 21 has holes 32,
2B and 29.33, the borosilicate glass tube is airtightly supported on the side plate.
各硼硅酸ガラス管端は両側板２２．２〜３０外側におい
て隣同志お互にＷ来公知のＵ字管３４．３４′・・・に
よって気密に連結される。Ｕ −字管で連結されない
一管端は給水管３５と連結され、該給水管３５の管端は
給水槽３６内においてフートパルプ３γが一取付けられ
ている。Ｕ字管で連結されない他の一管端は該低温用エ
コノマイザ−の排出管３８と連結され、該排水管３８は
給水ポツプ３９−のサクショノ側と連結されている。該
給水ポンプ３９のプリヘリ管４０は鋳鉄製の高温用エコ
ノマイザ−への給水管に連結される。この低温用エコノ
マイザ−外周は断熱材４１で囲い、容器４２内に収納し
てユニット型になって炉る。The ends of each borosilicate glass tube are hermetically connected to each other on the outside of both side plates 22.2 to 30 by U-shaped tubes 34, 34', . . . which are well known in the art. One pipe end that is not connected by the U-shaped pipe is connected to a water supply pipe 35, and a foot pulp 3γ is attached to the pipe end of the water supply pipe 35 in a water supply tank 36. The other pipe end not connected by the U-shaped pipe is connected to the discharge pipe 38 of the low temperature economizer, and the drain pipe 38 is connected to the suction side of the water supply pot 39-. The pre-heli pipe 40 of the water supply pump 39 is connected to a water supply pipe to a high-temperature economizer made of cast iron. The outer periphery of this low-temperature economizer is surrounded by a heat insulating material 41, and the economizer is housed in a container 42 to form a unit type furnace.
燃焼ガスは、矢印で示すごとく、本低温用エコノマイザ
−の側板間の水平に硼硅酸ガラス管多数が配置されてい
るスペースの管の外側を縫って通る。水は給水ポンプ３
９によって吸引されて給水槽３５かも吸上げられＵ字管
で連結されている低温用エコノマイザ−の硼硅酸ガラス
管２１内を順次可成り高速で円滑に流れ、淀みの部分を
生せしめないようにする。燃焼排ガスが低温になり露点
近くになっても、本低温用エコノマイザ−のいかなる部
分にも腐食を生せしめず、耐用年数を長くすることがで
きる。As shown by the arrow, the combustion gas passes through the space outside the tubes in the space where a number of borosilicate glass tubes are arranged horizontally between the side plates of this low-temperature economizer. Water supply pump 3
9, the water is sucked up by the water tank 35, and flows smoothly at a fairly high speed through the borosilicate glass tube 21 of the low-temperature economizer, which is connected by a U-shaped tube, so that no stagnation occurs. Make it. Even if the temperature of the combustion exhaust gas becomes low, close to the dew point, no part of this low-temperature economizer will corrode, and its service life can be extended.
本発明の低温用エコノマイザ−は燃焼排ガスの温度を１
００℃程度の低温にして排煙することができて熱効率を
高めることができ、また脱硫して排煙する場合も燃焼排
ガスの温度が１００℃程度であれば脱硫処理が容易であ
る。The low-temperature economizer of the present invention lowers the temperature of combustion exhaust gas by 1
It is possible to exhaust the smoke at a low temperature of about 00°C, increasing thermal efficiency, and when desulfurizing and exhausting the smoke, if the temperature of the combustion exhaust gas is about 100°C, the desulfurization treatment is easy.
第１図、第２図は硼硅酸ガラス管を用い、る低温用空気
予熱器のそれぞれ側断面図と、ガラス管を側板に固定さ
せる状態を示した拡大側断面図である。
第３図、第４図は本発明に係る低温用エコノマイザ−の
それぞれ側断面図と、ガラス管を側板に固定させる状態
を示した拡大側断面図である。
２１は硼硅酸ガラス管 ２２．２３は側板２４．２５は
側板の孔 ２６．２１は大面積成形品 ２８．２９は大
面積成形品のフラッジ付孔 ３０．３１は小面積成形品
３２．３３は小面積成形品のフランジ付孔 ３４はＵ
！管 ３５は給水管 ３６は給水槽 ３γはフートパル
プ ３８は排水管 ３９は給水〜
ポンプ ４０はデリベリ管 ４目ま断熱材４２は容器
課２図FIGS. 1 and 2 are a side sectional view of a low-temperature air preheater using a borosilicate glass tube, and an enlarged side sectional view showing a state in which the glass tube is fixed to a side plate. FIGS. 3 and 4 are a side sectional view and an enlarged side sectional view showing a state in which a glass tube is fixed to a side plate, respectively, of a low-temperature economizer according to the present invention. 21 is a borosilicate glass tube 22. 23 is a side plate 24. 25 is a hole in the side plate 26. 21 is a large area molded product 28. 29 is a large area molded product with a flanged hole 30. 31 is a small area molded product 32. 33 is a flanged hole of a small area molded product 34 is a U
! Pipes 35 is the water supply pipe 36 is the water tank 3γ is the foot pulp 38 is the drain pipe 39 is the water supply ~ Pump 40 is the delivery pipe 4th hole insulation material 42 is the container section 2
Claims (1)
いてそれぞれ側板２２．２３を設け２これら両側板２２
．２３はいずれも孔２４．２４／・・・ｋよび２５．２
５′・・・多数を有し、各硼硅酸ガラス管はその両側部
をこれら側板の孔に通してたとえば水平に位置させ、該
両側板２２．２３の内側面を蓋ってテフロンシ“−ト製
大面積成形品２６、＝２°γを設け、これら大面積成形
品にそれぞれフランジ付孔２８゜２８′・・・および２
９．２９′・・・を設け、該両側板２２．２３の外側に
それぞれ固着手段によりて該側板と固着させて多数のテ
フロンシート製小面積成形品３０．３０′・・・および
３１゜３１′・・・を設け、これら小面積成形品にそれ
ぞれフランジ付孔３２．３２′・・・および３３．３３
′・・・を設け、各硼硅酸ガラス管２目丁これら大面積
成形品の孔と小面積成形品の孔を貫通させて気密に支持
し、各硼硅酸ガラス管は両側板の両性側においてＵ字管
３４．３４′・・・隻 によって隣同志連結させ、給水管３５は給水槽３６内に
そのフートパルプ３Ｔを設け、排出管３８は給水ポンプ
３９のサクション側と連結した構造の低温用エコノマイ
ザ−０[Claims] Side plates 22, 23 are provided on both sides of a large number of borosilicate glass tubes 21, 21', respectively. 2 These side plates 22
．． 23 are holes 24.24/...k and 25.2.
Each borosilicate glass tube has both sides passed through the holes in these side plates and is positioned, for example, horizontally, and the inner surfaces of the side plates 22 and 23 are covered with a Teflon glass tube. A large-area molded product 26, = 2°γ, made from
9, 29'... are provided on the outside of the side plates 22, 23, and each of them is fixed to the side plate by a fixing means to form a large number of small-area Teflon sheet molded products 30, 30'... and 31° 31. '... are provided, and flanged holes 32, 32'... and 33, 33 are provided in these small area molded products, respectively.
'... are provided, and each borosilicate glass tube is supported airtight by passing through the hole of the large area molded product and the hole of the small area molded product, and each borosilicate glass tube is Adjacent U-shaped pipes 34, 34'... are connected to each other on the sides, the water supply pipe 35 has its foot pulp 3T in the water tank 36, and the discharge pipe 38 is connected to the suction side of the water supply pump 39. economizer-0
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56152858A JPS5855601A (en) | 1981-09-29 | 1981-09-29 | Economizer for low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56152858A JPS5855601A (en) | 1981-09-29 | 1981-09-29 | Economizer for low temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5855601A true JPS5855601A (en) | 1983-04-02 |
| JPS6316003B2 JPS6316003B2 (en) | 1988-04-07 |
Family
ID=15549656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56152858A Granted JPS5855601A (en) | 1981-09-29 | 1981-09-29 | Economizer for low temperature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855601A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6021896U (en) * | 1983-07-15 | 1985-02-15 | 日本フア−ネス工業株式会社 | Water washing equipment for heat-resistant glass heat exchangers |
| JPS6080095A (en) * | 1983-10-07 | 1985-05-07 | Nippon Furnace Kogyo Kaisha Ltd | Shell tube heat exchanger |
| US7814742B2 (en) | 2006-12-13 | 2010-10-19 | Mitsubishi Heavy Industries, Ltd. | Integrated coal gasification combined cycle plant |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355555C (en) * | 2005-07-27 | 2007-12-19 | 天津市橡塑机械研究所有限公司 | Forming block of four segments combined for radial tires for big scale work |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5210955A (en) * | 1975-03-21 | 1977-01-27 | Froehlich Air Ag | Heat exchanger and method of producing same |
-
1981
- 1981-09-29 JP JP56152858A patent/JPS5855601A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5210955A (en) * | 1975-03-21 | 1977-01-27 | Froehlich Air Ag | Heat exchanger and method of producing same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6021896U (en) * | 1983-07-15 | 1985-02-15 | 日本フア−ネス工業株式会社 | Water washing equipment for heat-resistant glass heat exchangers |
| JPS6080095A (en) * | 1983-10-07 | 1985-05-07 | Nippon Furnace Kogyo Kaisha Ltd | Shell tube heat exchanger |
| US7814742B2 (en) | 2006-12-13 | 2010-10-19 | Mitsubishi Heavy Industries, Ltd. | Integrated coal gasification combined cycle plant |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6316003B2 (en) | 1988-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4275705A (en) | Two-stage heat exchanger | |
| EP2035531B1 (en) | Advanced fired heater unit for use in refinery and petrochemical applications | |
| US2902265A (en) | Heat retriever | |
| US1812339A (en) | Apparatus for heat interchanging | |
| JPS5855601A (en) | Economizer for low temperature | |
| US4344386A (en) | Heat transfer equipment and method | |
| US4038022A (en) | In-furnace recuperator | |
| CN102460021A (en) | A method for supplying combustion air to a flue gas air preheater, a preheating apparatus, and an air guide sleeve | |
| CN107328090A (en) | Gas wall-mounted furnace | |
| JPH04257655A (en) | Small size gas combustion air heater | |
| CN207196907U (en) | Gas wall-mounted furnace | |
| JPH07167585A (en) | Low temperature corrosion prevention structure of heat exchanger | |
| US4269655A (en) | Device for concentration of mineral acids, particularly sulphuric acid | |
| GB191116948A (en) | Improvements in and relating to Means for the Heating or Cooling of Fluids. | |
| CN112577338A (en) | High-temperature fluid transportation pipeline internally provided with heat exchange equipment, applicable heat exchange equipment and heat exchange method | |
| CN2127973Y (en) | Sleeve expansion joint | |
| CN220186861U (en) | Vertical glass tube air preheater | |
| CN208566657U (en) | It is a kind of for Boiler Furnace outside heat preservation supporting mechanism | |
| CN110057209A (en) | A kind of shell and tube light pipe evaporator and its welding method | |
| US4243477A (en) | Device for an installation of a quartz tube in a device for concentration of mineral acids | |
| US4008655A (en) | Method and apparatus for protecting a double-shelled chimney stack | |
| CN112481438A (en) | Blast furnace hot blast stove double-preheating system with low-temperature corrosion resistant core | |
| US3115852A (en) | Combustion products condenser | |
| JP2588082Y2 (en) | Heat transfer tubes in heat exchangers | |
| JPS638384B2 (en) |