CN103706303A - Novel formaldehyde oxidizer - Google Patents
Novel formaldehyde oxidizer Download PDFInfo
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- CN103706303A CN103706303A CN201310684639.1A CN201310684639A CN103706303A CN 103706303 A CN103706303 A CN 103706303A CN 201310684639 A CN201310684639 A CN 201310684639A CN 103706303 A CN103706303 A CN 103706303A
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- main cylinder
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- main barrel
- formaldehyde
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Abstract
The invention aims to provide a novel formaldehyde oxidizer capable of effectively preventing a tube nest from being tension fractures, unsoldering and burst due to thermal deformation and prolonging the service life. The novel formaldehyde oxidizer comprises a main barrel and an inner barrel, wherein a quaternary gas mixture inlet is formed in the upper part of the main barrel; a barrel cover, a pressure measurement opening, sight glass and an explosion-proof opening are arranged at the upper end of the main barrel; an igniter, a support, a catalyst layer and a hot water inlet are arranged on one side of the main barrel; a lower barrel, a lower end enclosure, a formaldehyde outlet and a sewage outlet are arranged at the lower part of the main barrel; an upper tube plate tube nest is arranged in the main barrel; a catalyst support, a temperature measurement opening, a condensed water outlet and a distribution cone are arranged on the other side of the main barrel. The novel formaldehyde oxidizer also comprises a water seal longer than the upper tube plate tube nest, wherein a vapor outlet is formed in the upper end of the water seal; a section of the upper tube plate tube nest is provided with a u-shaped bend.
Description
Technical field
The present invention relates to a kind of chemical organic compounds oxidation furnaces, particularly a kind of novel methylene oxidator.
Background technology
Oxidation of formaldehyde device is one of capital equipment of producing in formaldehyde, and it is to utilize oxidation of formaldehyde liberated heat to produce steam, used for producing, and owing to containing a small amount of formic acid in formalin, carbon steel is had to corrosiveness.The current oxidation of formaldehyde device of most domestic producer, mostly adopt stainless steel fixed tube sheet tubular heat exchanger, for a long time, when oxidation of formaldehyde device moves at the temperature of 620-660 ℃, the welding point place of upper perforated plate tubulation is corroded and occurs crackle, repair welding effect is also bad, only have 1-2 service life, the equipment of a set of like this hundreds of thousands unit has just been scrapped.Therefore solve the etching problem of oxidation of formaldehyde device waste heat boiler, increase the service life, become China's formaldehyde industry problem anxious to be resolved.
Summary of the invention
The object of this invention is to provide a kind of effective prevention because thermal deformation causes drawing crack, sealing-off, the explosion of tubulation, improve the novel methylene oxidator in life-span.
The present invention is achieved in that a kind of novel methylene oxidator, comprise main cylinder and inner barrel, described main cylinder top is provided with quaternary gaseous mixture entrance, main cylinder upper end is provided with cover, pressure tap, visor, venting, one side of main cylinder is provided with igniter, bearing, catalyst layer, hot water inlet, main cylinder bottom is provided with lower shell, low head, the outlet of formaldehyde gas, sewage draining exit, main cylinder inside is provided with upper perforated plate tubulation, the opposite side of main cylinder is provided with catalyst and supports, temperature-measuring port, condensation-water drain, cone distributes, characterized by further comprising the water seal that length is greater than upper perforated plate tubulation, the upper end of described water seal is provided with steam (vapor) outlet, one section of described upper perforated plate tubulation has u-shaped bending.
Oxidation of formaldehyde device is one of capital equipment of producing in formaldehyde, and it is to utilize oxidation of formaldehyde liberated heat to produce steam, used for producing, and owing to containing a small amount of formic acid in formalin, carbon steel is had to corrosiveness.The current oxidation of formaldehyde device of most domestic producer, mostly adopt stainless steel fixed tube sheet tubular heat exchanger, for a long time, when oxidation of formaldehyde device moves at the temperature of 620-660 ℃, the welding point place of upper perforated plate tubulation is corroded and occurs crackle, repair welding effect is also bad, only have 1-2 service life, the equipment of a set of like this hundreds of thousands unit has just been scrapped.
The technical problem to be solved in the present invention: solve the thermal deformation that oxidator Yin Gaowen in production and application produces in the situation that not affecting oxidator structure, because thermal deformation causes drawing crack, the sealing-off of tubulation, the problem of explosion.
The scheme that technical solution problem adopts:
1, adopt specific purpose tool processing heat exchanger tube, change the thermal stress impact of thermic load exchange heat pipe: the steam segment tubulation at oxidation of formaldehyde device adopts the pretreatment of colding pressing, in certain section, produce u-shaped bending, its advantage is effectively to offset the oxidator thermal deformation that Yin Gaowen produces in production and application, effectively stop drawing crack, sealing-off, the explosion that causes tubulation because of thermal deformation, improve the oxidator life-span.
2, adopt protection water seal effectively to protect (tubulation is all placed in water seal, and steam (vapor) outlet changes into and is arranged at cylindrical shell one side from cylinder top), the generation of stopping superheating phenomenon to quench zone upper perforated plate and tubulation superheat section.
By above-mentioned technological improvement, manufacturing process and material selection, upgrade; The Novel heat exchange pipe oxidation of formaldehyde device of developing can improve Formaldehyde Production unit consumption 7% in Formaldehyde Production, and heat exchange efficiency improves 10%, and oxidator life is more than 2 years.
accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the embodiment of the present invention;
In figure: 1, quaternary gaseous mixture entrance; 2, inner barrel; 3, cover; 4, pressure tap; 5, visor: 6, venting; 7, igniter; 8, steam (vapor) outlet; 9, bearing; 10, main cylinder; 11, catalyst layer; 12, upper perforated plate tubulation; 13, hot water inlet; 14, lower shell; 15, low head; 16, the outlet of formaldehyde gas; 17, sewage draining exit; 18, catalyst supports; 19, temperature-measuring port; 20, condensation-water drain; 21, cone distributes; 22, water seal.
The specific embodiment
As shown in Figure 1, the present invention includes main cylinder 10 and inner barrel 2, described main cylinder 10 tops are provided with quaternary gaseous mixture entrance 1, main cylinder 10 upper ends are provided with cover 3, pressure tap 4, visor 5, venting 6, one side of main cylinder is provided with igniter 7, bearing 9, catalyst layer 11, hot water inlet 13, main cylinder bottom is provided with lower shell 14, low head 15, formaldehyde gas outlet 16, sewage draining exit 17, main cylinder inside is provided with upper perforated plate tubulation 12, the opposite side of main cylinder is provided with catalyst and supports 18, temperature-measuring port 19, condensation-water drain 20, cone 21 distributes, characterized by further comprising the water seal 22 that the length being arranged in main cylinder 10 is greater than upper perforated plate tubulation 12, the upper end of described water seal 22 is provided with steam (vapor) outlet 8, one section of described upper perforated plate tubulation 12 has u-shaped bending.
Claims (1)
1. a novel methylene oxidator, comprise main cylinder and inner barrel, described main cylinder top is provided with quaternary gaseous mixture entrance, main cylinder upper end is provided with cover, pressure tap, visor, venting, one side of main cylinder is provided with igniter, bearing, catalyst layer, hot water inlet, main cylinder bottom is provided with lower shell, low head, the outlet of formaldehyde gas, sewage draining exit, main cylinder inside is provided with upper perforated plate tubulation, the opposite side of main cylinder is provided with catalyst and supports, temperature-measuring port, condensation-water drain, cone distributes, characterized by further comprising the water seal that length is greater than upper perforated plate tubulation, the upper end of described water seal is provided with steam (vapor) outlet, one section of described upper perforated plate tubulation has u-shaped bending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684639.1A CN103706303A (en) | 2013-12-12 | 2013-12-12 | Novel formaldehyde oxidizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684639.1A CN103706303A (en) | 2013-12-12 | 2013-12-12 | Novel formaldehyde oxidizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103706303A true CN103706303A (en) | 2014-04-09 |
Family
ID=50399863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310684639.1A Pending CN103706303A (en) | 2013-12-12 | 2013-12-12 | Novel formaldehyde oxidizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103706303A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667833A (en) * | 2015-03-24 | 2015-06-03 | 江苏凯茂石化科技有限公司 | Large-span high-yield formaldehyde oxidizer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0386227A (en) * | 1989-08-28 | 1991-04-11 | Mitsubishi Electric Corp | Reactor |
| CN1326918A (en) * | 2001-07-11 | 2001-12-19 | 马辰生 | Producing equipment for formaldehyde and its completed production process |
| EP1080781B1 (en) * | 1999-08-31 | 2006-03-22 | Nippon Shokubai Co., Ltd. | Method for catalytic gas phase oxidation |
| CN101239893A (en) * | 2007-02-05 | 2008-08-13 | 永港伟方(北京)科技有限公司 | Formaldehyde oxidation reactor |
| CN201245579Y (en) * | 2008-08-01 | 2009-05-27 | 谭文斌 | Formaldehyde reactor |
-
2013
- 2013-12-12 CN CN201310684639.1A patent/CN103706303A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0386227A (en) * | 1989-08-28 | 1991-04-11 | Mitsubishi Electric Corp | Reactor |
| EP1080781B1 (en) * | 1999-08-31 | 2006-03-22 | Nippon Shokubai Co., Ltd. | Method for catalytic gas phase oxidation |
| CN1326918A (en) * | 2001-07-11 | 2001-12-19 | 马辰生 | Producing equipment for formaldehyde and its completed production process |
| CN101239893A (en) * | 2007-02-05 | 2008-08-13 | 永港伟方(北京)科技有限公司 | Formaldehyde oxidation reactor |
| CN201245579Y (en) * | 2008-08-01 | 2009-05-27 | 谭文斌 | Formaldehyde reactor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667833A (en) * | 2015-03-24 | 2015-06-03 | 江苏凯茂石化科技有限公司 | Large-span high-yield formaldehyde oxidizer |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |