CN204933436U - Two autoclave continuous nitrification reaction unit - Google Patents

Two autoclave continuous nitrification reaction unit Download PDF

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Publication number
CN204933436U
CN204933436U CN201520487446.1U CN201520487446U CN204933436U CN 204933436 U CN204933436 U CN 204933436U CN 201520487446 U CN201520487446 U CN 201520487446U CN 204933436 U CN204933436 U CN 204933436U
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CN
China
Prior art keywords
reaction still
order reaction
nitric acid
acid feed
connects
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Withdrawn - After Issue
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CN201520487446.1U
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Chinese (zh)
Inventor
胡南
叶茂
肖龙威
南从德
陈磊
樊小彬
彭寅生
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JIANGSU LIANHUA TECHNOLOGY Co Ltd
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JIANGSU LIANHUA TECHNOLOGY Co Ltd
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Priority to CN201520487446.1U priority Critical patent/CN204933436U/en
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Abstract

Two autoclave continuous nitrification reaction unit, it is characterized in that comprising nitric acid feed pump and concentrated sulfuric acid feed pump, nitric acid feed pump connects nitric acid feed pipe, nitric acid feed pipe arranges flowmeter, nitric acid feed pipe other end connects first order reaction still, in first order reaction still, shower nozzle is set, shower nozzle is connected with nitric acid feed pipe other end, concentrated sulfuric acid feed pump connects first order reaction still through concentrated sulfuric acid feed pipe, one-level chuck is set outside first order reaction still, one-level chuck connects one-level cooling water inlet and one-level coolant outlet, the U-shaped bend pipe of one-level is connected under first order reaction still, the U-shaped bend pipe other end of one-level connects second order reaction still, the nitric acid inlet height of second order reaction still is lower than the nitric acid inlet height of first order reaction still, secondary chuck is set outside second order reaction still, secondary chuck connects secondary cooling water inlet and secondary coolant outlet, the U-shaped bend pipe of secondary is connected under second order reaction still, the U-shaped bend pipe of secondary connects discharge nozzle.

Description

Two autoclave continuous nitrification reaction unit
Technical field
The utility model relates to nitration reaction device, particularly relates to two autoclave continuous nitrification reaction unit.
Background technology
Nitration reaction is a kind of common chemical engineering unit operation, is widely used in agricultural chemicals, medicine and dyestuff.For the single kettle type nitration reaction used in the past, reaction efficiency is low, and product yield is low.Nitration reaction itself can produce large calorimetric, if control with great difficulty not blast danger, existing single kettle type nitration reaction device, be typically employed in still and increase coil pipe, or external cycle condenser, although can reduce heat like this, cannot carry out nitration reaction continuously, thus can affect production capacity and the reaction efficiency of nitration reaction device, and observable index is higher.
Summary of the invention
The purpose of this utility model is the shortcoming existed to overcome prior art, provides one to effectively reduce heat of reaction, improves reaction efficiency, increases two autoclave continuous nitrification reaction units of product yield.
The technical scheme of the two autoclave continuous nitrification reaction unit of the utility model is: it is characterized in that comprising nitric acid feed pump and concentrated sulfuric acid feed pump, nitric acid feed pump connects nitric acid feed pipe, nitric acid feed pipe arranges flowmeter, nitric acid feed pipe other end connects first order reaction still, in first order reaction still, shower nozzle is set, shower nozzle is connected with nitric acid feed pipe other end, concentrated sulfuric acid feed pump connects first order reaction still through concentrated sulfuric acid feed pipe, one-level chuck is set outside first order reaction still, one-level chuck connects one-level cooling water inlet and one-level coolant outlet, the U-shaped bend pipe of one-level is connected under first order reaction still, the U-shaped bend pipe other end of one-level connects second order reaction still, the nitric acid inlet height of second order reaction still is lower than the nitric acid inlet height of first order reaction still, secondary chuck is set outside second order reaction still, secondary chuck connects secondary cooling water inlet and secondary coolant outlet, the U-shaped bend pipe of secondary is connected under second order reaction still, the U-shaped bend pipe of secondary connects discharge nozzle.
The utility model discloses a kind of two autoclave continuous nitrification reaction unit, principal character comprises two reactors (concrete structure of reactor is prior art), wherein first order reaction still is higher than second order reaction still, first order reaction still connects second order reaction still through the U-shaped bend pipe of one-level, during work, nitric acid is inputted first order reaction still through nitric acid feed pipe by nitric acid feed pump, be positioned at first order reaction still at nitric acid feed pipe and connect shower nozzle (concrete structure of shower nozzle is prior art), by shower nozzle, nitric acid is sprayed on the liquid level of first order reaction still inside, and the concentrated sulfuric acid inputs in first order reaction still through concentrated sulfuric acid feed pipe by concentrated sulfuric acid feed pump, nitrification liquid is formed after nitric acid and the concentrated sulfuric acid are uniformly mixed in first order reaction still, when nitrification liquid reaches the overhead height of the U-shaped bend pipe of one-level, unnecessary nitrification liquid just can overflow in second order reaction still from the bottom of first order reaction still, and continued to carry out nitration reaction to it by second order reaction still, and when the nitrification liquid in second order reaction still reaches the overhead height of the U-shaped bend pipe of secondary, unnecessary nitrification liquid just can flow out from discharge nozzle bottom second order reaction still.The two autoclave continuous nitrification reaction unit of this programme, utilize two reactors, the one high and one low setting of reactor, all nitrification liquids will be first emitted after completing relative to each nitration reaction of single reactor, input nitric acid and the concentrated sulfuric acid again, height arranges two reactor can realize continuous nitrification reaction, improve reaction efficiency, increase product yield, and nitric acid is on the liquid level of sprinkler in first order reaction still, and coordinate the cooling water of one-level, secondary chuck conveying, effectively can reduce the heat of reaction in reactor, ensure production safety.
The two autoclave continuous nitrification reaction unit of this practicality, the height between the nitric acid import of described first order reaction still and the nitric acid import of second order reaction still is 500-1000mm.According to the size of reactor, different differences in height can be set.Described first order reaction still is connected delivery pipe with under second order reaction still, delivery pipe is arranged first grade discharging valve and secondary vent valves.When there is emergency, the nitrification liquid in first order reaction still directly can be discharged from first grade discharging valve, the nitrification liquid in second order reaction still is directly discharged from secondary vent valves.
Accompanying drawing explanation
Fig. 1 is the structural representation of the two autoclave continuous nitrification reaction unit of the utility model.
Detailed description of the invention
The utility model relates to a kind of two autoclave continuous nitrification reaction unit, as shown in Figure 1, it is characterized in that: comprise nitric acid feed pump 1 and concentrated sulfuric acid feed pump 2, nitric acid feed pump connects nitric acid feed pipe 3, nitric acid feed pipe is arranged flowmeter 4, nitric acid feed pipe other end connects first order reaction still 5, shower nozzle 6 is set in first order reaction still, shower nozzle is connected with nitric acid feed pipe other end, concentrated sulfuric acid feed pump 2 connects first order reaction still through concentrated sulfuric acid feed pipe 7, one-level chuck 8 is set outside first order reaction still, one-level chuck connects one-level cooling water inlet 9 and one-level coolant outlet 10, the U-shaped bend pipe 11 of one-level is connected under first order reaction still, the U-shaped bend pipe other end of one-level connects second order reaction still 12, the nitric acid inlet height of second order reaction still is lower than the nitric acid inlet height of first order reaction still 5, secondary chuck 13 is set outside second order reaction still, secondary chuck connects secondary cooling water inlet 14 and secondary coolant outlet 15, second order reaction still connects the U-shaped bend pipe 16 of secondary 12 times, the U-shaped bend pipe of secondary connects discharge nozzle 17.Principal character comprises two reactors (concrete structure of reactor is prior art), wherein first order reaction still 5 is higher than second order reaction still 12, first order reaction still connects second order reaction still through the U-shaped bend pipe 11 of one-level, during work, nitric acid is inputted first order reaction still 5 through nitric acid feed pipe 3 by nitric acid feed pump 1, being positioned at nitric acid feed pipe the concrete structure that first order reaction still connects shower nozzle 6(shower nozzle is prior art), by shower nozzle, nitric acid is sprayed on the liquid level of first order reaction still 5 inside, and the concentrated sulfuric acid inputs in first order reaction still 5 through concentrated sulfuric acid feed pipe 7 by concentrated sulfuric acid feed pump 2, nitrification liquid is formed after nitric acid and the concentrated sulfuric acid are uniformly mixed in first order reaction still, when nitrification liquid reaches the overhead height of the U-shaped bend pipe 11 of one-level, unnecessary nitrification liquid just can overflow in second order reaction still 12 from the bottom of first order reaction still, and continued to carry out nitration reaction to it by second order reaction still, and when the nitrification liquid in second order reaction still reaches the overhead height of the U-shaped bend pipe 16 of secondary, unnecessary nitrification liquid just can flow out from discharge nozzle 17 bottom second order reaction still.The two autoclave continuous nitrification reaction unit of this programme, utilize two reactors, the one high and one low setting of reactor, all nitrification liquids will be first emitted after completing relative to each nitration reaction of single reactor, input nitric acid and the concentrated sulfuric acid again, height arranges two reactor can realize continuous nitrification reaction, improve reaction efficiency, increase product yield, and nitric acid is sprayed on the liquid level in first order reaction still 5 through shower nozzle 6, and the cooling water coordinating one-level, secondary chuck 8,13 to carry, effectively can reduce the heat of reaction in reactor, ensure production safety.Height between the nitric acid import of described first order reaction still 5 and the nitric acid import of second order reaction still 12 is 500-1000mm.According to the size of reactor, different differences in height can be set.Described first order reaction still 5 is connected delivery pipe 18 12 times with second order reaction still, delivery pipe is arranged first grade discharging valve 19 and secondary vent valves 20.When there is emergency, the nitrification liquid in first order reaction still 5 directly can be discharged from first grade discharging valve 19, the nitrification liquid in second order reaction still 12 is directly discharged from secondary vent valves 20.

Claims (3)

1. pair autoclave continuous nitrification reaction unit, it is characterized in that: comprise nitric acid feed pump (1) and concentrated sulfuric acid feed pump (2), nitric acid feed pump connects nitric acid feed pipe (3), nitric acid feed pipe is arranged flowmeter (4), nitric acid feed pipe other end connects first order reaction still (5), shower nozzle (6) is set in first order reaction still, shower nozzle is connected with nitric acid feed pipe other end, concentrated sulfuric acid feed pump (2) connects first order reaction still through concentrated sulfuric acid feed pipe (7), one-level chuck (8) is set outside first order reaction still, one-level chuck connects one-level cooling water inlet (9) and one-level coolant outlet (10), the U-shaped bend pipe of one-level (11) is connected under first order reaction still, the U-shaped bend pipe other end of one-level connects second order reaction still (12), the nitric acid inlet height of second order reaction still is lower than the nitric acid inlet height of first order reaction still (5), secondary chuck (13) is set outside second order reaction still, secondary chuck connects secondary cooling water inlet (14) and secondary coolant outlet (15), the U-shaped bend pipe of secondary (16) is connected under second order reaction still (12), the U-shaped bend pipe of secondary connects discharge nozzle (17).
2. two autoclave continuous nitrification reaction unit as claimed in claim 1, is characterized in that: the height between the nitric acid import of described first order reaction still (5) and the nitric acid import of second order reaction still (12) is 500-1000mm.
3. two autoclave continuous nitrification reaction unit as claimed in claim 1, it is characterized in that: described first order reaction still (5) is connected delivery pipe (18) with under second order reaction still (12), delivery pipe is arranged first grade discharging valve (19) and secondary vent valves (20).
CN201520487446.1U 2015-07-08 2015-07-08 Two autoclave continuous nitrification reaction unit Withdrawn - After Issue CN204933436U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520487446.1U CN204933436U (en) 2015-07-08 2015-07-08 Two autoclave continuous nitrification reaction unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520487446.1U CN204933436U (en) 2015-07-08 2015-07-08 Two autoclave continuous nitrification reaction unit

Publications (1)

Publication Number Publication Date
CN204933436U true CN204933436U (en) 2016-01-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105013418A (en) * 2015-07-08 2015-11-04 江苏联化科技有限公司 Double-kettle type continuous nitration reaction device
CN109406609A (en) * 2017-08-15 2019-03-01 联化科技股份有限公司 A kind of electrochemical method of on-line analysis nitro-reduction reaction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105013418A (en) * 2015-07-08 2015-11-04 江苏联化科技有限公司 Double-kettle type continuous nitration reaction device
CN105013418B (en) * 2015-07-08 2017-04-12 江苏联化科技有限公司 Double-kettle type continuous nitration reaction device
CN109406609A (en) * 2017-08-15 2019-03-01 联化科技股份有限公司 A kind of electrochemical method of on-line analysis nitro-reduction reaction

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AV01 Patent right actively abandoned

Granted publication date: 20160106

Effective date of abandoning: 20170412

AV01 Patent right actively abandoned