CN206793632U - A kind of pre-reaction device in glyoxalic acid building-up process - Google Patents
A kind of pre-reaction device in glyoxalic acid building-up process Download PDFInfo
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- CN206793632U CN206793632U CN201720651116.0U CN201720651116U CN206793632U CN 206793632 U CN206793632 U CN 206793632U CN 201720651116 U CN201720651116 U CN 201720651116U CN 206793632 U CN206793632 U CN 206793632U
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- heat exchanger
- glyoxalic acid
- reaction device
- acid building
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Abstract
The pre-reaction device in a kind of glyoxalic acid building-up process is the utility model is related to, belongs to chemical industry equipment and technical field；It includes：Measuring tank, control valve, fluid distributor, heat exchanger；The pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model solves the problems, such as glyoxalic acid synthetic reaction very exothermic at initial stage, and the steady progress and the raising of yield to synthetic reaction are highly beneficial；The pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model also has the characteristics of equipment is simple, installation is easy, simple operation.
Description
Technical field
The utility model category chemical industry equipment and technical field, the pre-reaction dress in more particularly to a kind of glyoxalic acid building-up process
Put.
Background technology
Glyoxalic acid（CHO-COOH）It is important fine chemical material, is widely used in spices, pharmacy, agricultural chemicals, chemical industry etc.
Industry.
Glyoxal nitric acid oxidation method synthesizing glyoxalic acid is the technique for the production glyoxalic acid that most domestic enterprise uses, and it is changed
It is as follows to learn reaction equation：
3CHO-CHO +2HNO3 → 3CHO-COOH+2NO ↑ +H2O。
In the synthetic reaction process of glyoxalic acid, also substantial amounts of accessory substance oxalic acid generates, and its chemical equation is as follows：
3CHOCOOH + 2HNO3 →3COOH-COOH + NO↑+H2O。
The main reason for oxalic acid generates is the over oxidation of glyoxal, and shows following the reason for glyoxal over oxidation
3 aspects：1. glyoxal oxidation category strong exothermal reaction, and the heat exchange area of reacting kettle jacketing only has 12-15m2, it is scattered far from meeting
Heat demand, make charge temperature is whard to control to cause glyoxal over oxidation into oxalic acid, the 2. nitric acid dropping time as oxidant
It is oversize, it is easy to cause glyoxal over oxidation to turn into oxalic acid, the feed postition of 3. glyoxals is unavoidable to cause glyoxal
Over oxidation.
If a kind of method or apparatus can solve problem above, then the production process of glyoxalic acid will become easy, receive
Rate can also improve a lot, and this is also the technological innovation that the industry is craved for.
The content of the invention
Based on the purpose for solving problem above, we research and develop the pre-reaction dress in a kind of glyoxalic acid building-up process
Put, it is carried out to the feed way in the synthetic reaction process of glyoxalic acid, reaction process, temperature control mode to a certain extent
Innovation, reaction temperature is become gentle easy to control, shorten the nitric acid dropping time, and then make the quantum of output of accessory substance oxalic acid big
Width is reduced.
Technical solutions of the utility model provide the pre-reaction device in a kind of glyoxalic acid building-up process, and its effect is handle
Several raw materials needed for reaction are pre-mixed, pre-reaction, pre- cooling, it the advantages of be that reaction temperature becomes gentle easy to control,
The nitric acid dropping time has shortened, and oxalic acid quantum of output has been reduced, and glyoxalic acid yield increases.
Pre-reaction device in a kind of glyoxalic acid building-up process that technical solutions of the utility model provide, it includes：Metering
Groove A, measuring tank B, control valve, fluid distributor, material pipe, heat exchanger, exhaust pipe, it is characterised in that go out under measuring tank
Mouthful by control valve with fluid distributor is suitable for reading is connected, under fluid distributor outlet pass through material pipe and heat exchanger tube pass import
It is connected, heat exchanger tube pass outlet is connected downwards with reactor, is connected upwardly through exhaust pipe with tail gas absorber.
Preferably, the pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model, it is described
Measuring tank A and measuring tank B be enamel or stainless steel, its capacity is 1.5-2.5m3, regarded equipped with liquid level gauge and pipeline
Mirror.
Preferably, the pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model, it is described
Fluid distributor be PP plastic materials or enamel material, its outward appearance is spherical, oval or cylindrical, and its volume is 0.2-
1.0m3。
Preferably, described in the pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model
There are 2 openings up and down on fluid distributor, its surface, and the opening of top is the common inlet of different material, and following opening is mixed
The outlet of compound material.
Preferably, the pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model, it is described
Heat exchanger be double pipe heat exchanger or board-like enamel heat exchanger, its heat exchange area is 5-15m2。
Preferably, described in the pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model
Heat exchanger, double pipe heat exchanger are placed with horizontal line in 0 ° of -15 ° of inclination angle, and board-like enamel heat exchanger is placed with horizontal line,
What its shell side was passed through is less than 25 °C of cooling water, cooling water pressure 0.5-0.15Mpa.
The pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model, it is preferably solved
The problem of glyoxalic acid synthetic reaction very exothermic at initial stage, the steady progress and the raising of yield to synthetic reaction be highly beneficial.
The pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model also has that equipment is simple, peace
The characteristics of dressing is easy, simple operation.
Brief description of the drawings
Fig. 1 is the signal of the pre-reaction device in a kind of glyoxalic acid building-up process of technical solutions of the utility model embodiment
Figure.
Embodiment
To make device of the present utility model, technical scheme clearly express, below in conjunction with the accompanying drawings to the utility model
Carry out in detail, be fully described by that is obvious, described embodiment is part of the embodiment of the present utility model, and not all.
Present embodiment embodiment provides the pre-reaction device in a kind of glyoxalic acid building-up process, reference picture 1, it
Including：
1- measuring tank A 2- measuring tanks B
3- control valve B 4- control valves B
5- flow mixer 6- heat exchangers
7- cooling water inlet 8- coolant outlets
9- dereaction kettles direction 10- goes to tail gas absorber direction.
The pre-reaction device in a kind of glyoxalic acid building-up process described in present embodiment embodiment, its specific work
It is such as the method for operation：The mixed liquor of raw material glyoxal etc. is first transferred to 1- measuring tank A, nitric acid etc. is transferred to 2- measuring tanks
B, then 3- control valve A and 4- control valve B are opened, regulate and control flow, made the raw materials such as nitric acid and glyoxal same according to set speed
Step flows into 5- flow mixers, and nitric acid and glyoxal through collisional mixing and start to react in flow mixer, reaction mixture warp
Outlet, material pipe flow rapidly into the 6- heat exchangers for being passed through cooling water under flow mixer, and reaction mixture is after cooling
Continue to react into reactor by 9, tail gas caused by initial reaction stage enters tail gas absorber by 10 to carry out effectively absorbing profit
With and harmless treatment.
Further, the pre-reaction device in a kind of glyoxalic acid building-up process described in present embodiment embodiment,
Described measuring tank A and measuring tank B is enamel or stainless steel, and its capacity is 1.5-2.5m3, equipped with liquid level gauge and pipe
Road visor.
Further, the pre-reaction device in a kind of glyoxalic acid building-up process described in present embodiment embodiment,
Described fluid distributor is PP plastic materials or enamel material, and its outward appearance is spherical, oval or cylindrical, and its volume is
0.2-1.0m3。
Further, the pre-reaction device in a kind of glyoxalic acid building-up process described in present embodiment embodiment,
There are 2 openings up and down on described fluid distributor, its surface, and the opening of top is the common inlet of different material, and following opens
Mouth is the outlet of mixed material.
Further, the pre-reaction device in a kind of glyoxalic acid building-up process described in present embodiment embodiment,
Described heat exchanger is double pipe heat exchanger or board-like enamel heat exchanger, and its heat exchange area is 5-15m2。
Further, the pre-reaction device institute in a kind of glyoxalic acid building-up process described in present embodiment embodiment
The heat exchanger stated, double pipe heat exchanger are placed with horizontal line in 0 ° of -15 ° of inclination angle, board-like enamel heat exchanger and horizontal line
Place, what its shell side was passed through is less than 25 °C of cooling water, cooling water pressure 0.5-0.15Mpa.
The pre-reaction device in a kind of glyoxalic acid building-up process described in present embodiment embodiment, its beneficial effect
Fruit is the active constituent content of glyoxalic acid in reaction solution by 17.5-18.5% liftings before to 19.5-21.0%, glyoxalic acid yield
Improve 5-7%.
Such device, the pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model, it
Can preferably solve the problems, such as glyoxalic acid synthetic reaction very exothermic at initial stage, to the steady progress of synthetic reaction and carrying for yield
It is high highly beneficial.
Such device, the pre-reaction device in a kind of glyoxalic acid building-up process described in technical solutions of the utility model, it
Also there is the characteristics of equipment is simple, installation is easy, simple operation.
Generic principles defined herein can be in the case where not departing from spirit or scope of the present utility model at it
Realized in its embodiment, therefore, the utility model will not be limited to the embodiments shown herein, every new in this practicality
Within type spirit and principle, any modification, equivalent substitution and improvements made etc., protection model of the present utility model should be included in
Within enclosing；The utility model institute protection domain is to fit to consistent with principles disclosed herein and features of novelty most wide
Scope.
Claims (6)
1. the pre-reaction device in a kind of glyoxalic acid building-up process, it includes：Measuring tank A, measuring tank B, control valve, fluid distrbution
Device, material pipe, heat exchanger, exhaust pipe, it is characterised in that outlet is suitable for reading by control valve and fluid distributor under measuring tank
Be connected, under fluid distributor outlet be connected by material pipe with heat exchanger tube pass import, heat exchanger tube pass export downwards with instead
Answer kettle to be connected, connected upwardly through exhaust pipe with tail gas absorber.
2. the pre-reaction device in a kind of glyoxalic acid building-up process according to claim 1, described measuring tank A and metering
Groove B is enamel or stainless steel, and its capacity is 1.5-2.5m3, equipped with liquid level gauge and pipeline viewing mirror.
3. the pre-reaction device in a kind of glyoxalic acid building-up process according to claim 1, described fluid distributor are
PP plastic materials or enamel material, its outward appearance are spherical, oval or cylindrical, and its volume is 0.2-1.0m3。
4. the fluid distributor described in pre-reaction device in a kind of glyoxalic acid building-up process according to claim 3, its
There are 2 openings up and down on surface, and the opening of top is the common inlet of different material, and following opening is the outlet of mixed material.
5. the pre-reaction device in a kind of glyoxalic acid building-up process according to claim 1, described heat exchanger is sleeve pipe
Formula heat exchanger or board-like enamel heat exchanger, its heat exchange area are 5-15m2。
6. the heat exchanger described in pre-reaction device in a kind of glyoxalic acid building-up process according to claim 5, bushing type
Heat exchanger is placed with horizontal line in 0 ° of -15 ° of inclination angle, and board-like enamel heat exchanger is placed with horizontal line, what its shell side was passed through
It is less than 25 °C of cooling water, cooling water pressure 0.5-0.15Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720651116.0U CN206793632U (en) | 2017-06-07 | 2017-06-07 | A kind of pre-reaction device in glyoxalic acid building-up process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720651116.0U CN206793632U (en) | 2017-06-07 | 2017-06-07 | A kind of pre-reaction device in glyoxalic acid building-up process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109678693A (en) * | 2018-12-25 | 2019-04-26 | 兄弟科技股份有限公司 | A kind of glyoxalic acid continuous oxidation technique |
-
2017
- 2017-06-07 CN CN201720651116.0U patent/CN206793632U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109678693A (en) * | 2018-12-25 | 2019-04-26 | 兄弟科技股份有限公司 | A kind of glyoxalic acid continuous oxidation technique |
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