CN104324688B - One low-pressure nitrogen carries out regenerating molecular sieve energy conserving system and method - Google Patents

One low-pressure nitrogen carries out regenerating molecular sieve energy conserving system and method Download PDF

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Publication number
CN104324688B
CN104324688B CN201410558341.0A CN201410558341A CN104324688B CN 104324688 B CN104324688 B CN 104324688B CN 201410558341 A CN201410558341 A CN 201410558341A CN 104324688 B CN104324688 B CN 104324688B
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heat exchanger
low
molecular sieve
pressure nitrogen
nitrogen
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CN104324688A (en
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章有虎
陈环琴
张国兴
王晋
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HANGZHOU ZHONGTAI CRYOGENIC TECHNOLOGY Co Ltd
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HANGZHOU ZHONGTAI CRYOGENIC TECHNOLOGY Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B01J20/18—Synthetic zeolitic molecular sieves
    • B01J20/183—Physical conditioning without chemical treatment, e.g. drying, granulating, coating, irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3433—Regenerating or reactivating of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
    • B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
    • B01J20/3466—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase with steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

The invention discloses one low-pressure nitrogen and carry out regenerating molecular sieve energy conserving system and method thereof.System includes First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger, molecular sieve adsorber；3rd heat exchanger high temperature nitrogen outlet, First Heat Exchanger, molecular sieve adsorber, the 3rd heat exchanger high temperature nitrogen entrance are sequentially connected, and the 3rd heat exchanger low temperature nitrogen outlet is connected with the second heat exchanger high temperature nitrogen entrance.Use the present invention, on the basis of traditional handicraft uses 2 heat exchangers needing to configure external heat source, low-temperature receiver, increase by one without external heat source, the heat exchanger of low-temperature receiver.The nitrogen of internal two bursts of different temperatures carries out temperature exchange in the heat exchanger increased, it is not necessary to external heat source, low-temperature receiver and reach the most required temperature.Then regenerating molecular sieve and energy-conservation purpose are achieved.

Description

One low-pressure nitrogen carries out regenerating molecular sieve energy conserving system and method
Technical field
The present invention relates to one low-pressure nitrogen and carry out regenerating molecular sieve energy conserving system and method, particularly pin regenerating molecular sieve power-economizing method.Moreover, it relates to regenerating molecular sieve process.
Background technology
The industry has been used up external heat source, low-temperature receiver to control nitrogen temperature, and each heat exchanger is required for configuring external heat source, low-temperature receiver, causes greater energy consumption.Conventional process flow figure is shown in accompanying drawing 2, traditional process is: 30-50 DEG C of low-temp low-pressure nitrogen is by First Heat Exchanger 13, under the heating of external heat source, First Heat Exchanger 13 is gone out with 200-220 DEG C of high-temperature low-pressure, 200-220 DEG C of high-temperature low-pressure nitrogen enters molecular sieve adsorber, completes regenerating molecular sieve, and the low-pressure nitrogen of go out molecular sieve adsorber 16 200-220 DEG C enters the second heat exchanger 14, under the cooling of external source, flow out the second heat exchanger 14 with 30-50 DEG C of low temperature.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that one low-pressure nitrogen carries out regenerating molecular sieve energy conserving system and method.
Described carry out regenerating molecular sieve energy conserving system with low-pressure nitrogen and include First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger, molecular sieve adsorber；3rd heat exchanger high temperature nitrogen outlet, First Heat Exchanger, molecular sieve adsorber, the 3rd heat exchanger high temperature nitrogen entrance are sequentially connected, and the 3rd heat exchanger low temperature nitrogen outlet is connected with the second heat exchanger high temperature nitrogen entrance.
The 3rd described heat exchanger includes the adapter of bobbin carriage, tube side, tube sheet, shell side adapter, cylinder, heat-transfer pipe, air vent, end socket, deflection plate, bearing, drainage port, dividing plate；Cylinder one end is bolted with bobbin carriage through tube sheet, and the cylinder other end is connected with end socket, and bobbin carriage is provided with tube side adapter, and cylinder is provided with shell side adapter, air vent, bearing, drainage port, and tube sheet is provided with heat-transfer pipe and is fixed on deflection plate.
The carrying out regenerating molecular sieve power-economizing method with low-pressure nitrogen and comprise the following steps of described system:
1) by the low-pressure nitrogen of 30-50 DEG C through the 3rd heat exchanger, it is heated to 160-180 DEG C by the nitrogen through molecular sieve adsorber；
2) 160-180 DEG C of low-pressure nitrogen is entered First Heat Exchanger, with high steam heat exchange, low-pressure nitrogen in First Heat Exchanger is again heated to 200-220 DEG C, the low-pressure nitrogen being heated to 200-220 DEG C enters molecular sieve adsorber, after the regenerating molecular sieve in molecular sieve adsorber, low-pressure nitrogen 180-200 DEG C goes out molecular sieve adsorber；
3) 180-200 DEG C of low-pressure nitrogen enters the 3rd heat exchanger, and the low-pressure nitrogen heat exchange with 30-50 DEG C is cooled to 50-70 DEG C and goes out the 3rd heat exchanger；
4) low-pressure nitrogen of 50-70 DEG C continues into the second heat exchanger, and with cooling water heat exchange, final 30-50 DEG C of low-pressure nitrogen goes out the second heat exchanger.
Use the present invention, on the basis of traditional handicraft uses 2 heat exchangers needing to configure external heat source, low-temperature receiver, increase by one without external heat source, the heat exchanger of low-temperature receiver.The nitrogen of internal two bursts of different temperatures carries out temperature exchange in the heat exchanger increased, it is not necessary to external heat source, low-temperature receiver and reach the most required temperature.Then regenerating molecular sieve and energy-conservation purpose are achieved.
Accompanying drawing explanation
Fig. 1 is the flow chart carrying out regenerating molecular sieve power-economizing method with low-pressure nitrogen；
Fig. 2 is the flow chart that conventional low nitrogen carries out regenerating molecular sieve method；
Fig. 3 is the structural representation of the 3rd heat exchanger of the present invention；
In figure, bobbin carriage 1, tube side adapter 2, tube sheet 3, shell side adapter 4, cylinder 5, heat-transfer pipe 6, air vent 7, end socket 8, deflection plate 9, bearing 10, drainage port 11, dividing plate 12, First Heat Exchanger the 13, second heat exchanger the 14, the 3rd heat exchanger 15, molecular sieve adsorber 16.
Detailed description of the invention
As it is shown in figure 1, carry out regenerating molecular sieve energy conserving system with low-pressure nitrogen to include First Heat Exchanger the 13, second heat exchanger the 14, the 3rd heat exchanger 15, molecular sieve adsorber 16；3rd heat exchanger 15 high temperature nitrogen outlet, First Heat Exchanger 13, molecular sieve adsorber the 16, the 3rd heat exchanger 15 high temperature nitrogen entrance are sequentially connected, and the 3rd heat exchanger 15 low temperature nitrogen outlet is connected with the second heat exchanger 14 high temperature nitrogen entrance.It is connected by high-temperature gas pipe special between each equipment, and Insulation to be carried out, carry out sealing in joint, it is to avoid reveal simultaneously.
As it is shown on figure 3, the second described heat exchanger 14 includes bobbin carriage 1, tube side adapter 2, tube sheet 3, shell side adapter 4, cylinder 5, heat-transfer pipe 6, air vent 7, end socket 8, deflection plate 9, bearing 10, drainage port 11, dividing plate 12；Cylinder 5 one end is bolted with bobbin carriage 1 through tube sheet 3, cylinder 5 other end is connected with end socket 8, bobbin carriage 1 is provided with tube side adapter 2, and cylinder 5 is provided with shell side adapter 4, air vent 7, bearing 10, drainage port 11, and tube sheet 3 is provided with heat-transfer pipe 6 and is fixed on deflection plate 9.The setting of deflection plate 9, on the one hand the effect supporting heat-transfer pipe 6 is played, on the one hand in can guiding cylinder 5, the upper and lower crossing type of fluid advances, add the heat exchange stroke of two kinds of liquid, improve heat exchange efficiency, the purpose arranging drainage port 11 is when heat exchanger does not uses, and fluid remaining in conveniently saying cylinder 5 is discharged, and drainage port 11 should carry out seal approach.Arranging air vent 7 is to reduce the flow of fluid in cylinder 5 for there being gas remaining in avoiding cylinder 5, causes heat exchange efficiency to reduce, height that air vent 7 should be suitable and carefully, it is to avoid in cylinder 5, fluid spills, and when to gas converting heat, need to seal air vent 7.
Carry out regenerating molecular sieve power-economizing method with low-pressure nitrogen to comprise the following steps:
1) by the low-pressure nitrogen of 40 DEG C through the 3rd heat exchanger 15, it is heated to 170 DEG C by the nitrogen through molecular sieve adsorber 16；
2) 170 DEG C of low-pressure nitrogens are entered First Heat Exchanger 13, with high steam heat exchange, low-pressure nitrogen in First Heat Exchanger 13 is again heated to 210 DEG C, the low-pressure nitrogen being heated to 210 DEG C enters molecular sieve adsorber 16, after the regenerating molecular sieve in molecular sieve adsorber 16, low-pressure nitrogen 190 DEG C goes out molecular sieve adsorber 16；
3) 190 DEG C of low-pressure nitrogens enter the 3rd heat exchanger 15, and the low-pressure nitrogen heat exchange with 40 DEG C is cooled to 60 DEG C and goes out the 3rd heat exchanger 15；
4) low-pressure nitrogen of 60 DEG C continues into the second heat exchanger 14, and with cooling water heat exchange, final 40 DEG C of low-pressure nitrogens go out the second heat exchanger 14.

Claims (2)

1. one kind carries out regenerating molecular sieve energy conserving system with low-pressure nitrogen, it is characterised in that include First Heat Exchanger (13), the second heat exchanger (14), the 3rd heat exchanger (15), molecular sieve adsorber (16)；3rd heat exchanger (15) high temperature nitrogen outlet, First Heat Exchanger (13), molecular sieve adsorber (16), the 3rd heat exchanger (15) high temperature nitrogen entrance are sequentially connected, and the 3rd heat exchanger (15) low temperature nitrogen outlet is connected with the second heat exchanger (14) high temperature nitrogen entrance；The 3rd described heat exchanger (15) includes bobbin carriage (1), tube side adapter (2), tube sheet (3), shell side adapter (4), cylinder (5), heat-transfer pipe (6), air vent (7), end socket (8), deflection plate (9), bearing (10), drainage port (11), dividing plate (12)；Cylinder (5) one end is bolted with bobbin carriage (1) through tube sheet (3), cylinder (5) other end is connected with end socket (8), bobbin carriage (1) is provided with tube side adapter (2), cylinder (5) is provided with shell side adapter (4), air vent (7), bearing (10), drainage port (11), and tube sheet (3) is provided with heat-transfer pipe (6) and is fixed on deflection plate (9).
2. one kind use system as claimed in claim 1 carry out regenerating molecular sieve power-economizing method with low-pressure nitrogen, it is characterised in that its method comprises the following steps:
1) by the low-pressure nitrogen of 30-50 DEG C through the 3rd heat exchanger (15), it is heated to 160-180 DEG C by the nitrogen through molecular sieve adsorber (16)；
2) 160-180 DEG C of low-pressure nitrogen is entered First Heat Exchanger (13), with high steam heat exchange, low-pressure nitrogen in First Heat Exchanger (13) is again heated to 200-220 DEG C, the low-pressure nitrogen being heated to 200-220 DEG C enters molecular sieve adsorber (16), after the regenerating molecular sieve in molecular sieve adsorber (16), low-pressure nitrogen 180-200 DEG C goes out molecular sieve adsorber (16)；
3) 180-200 DEG C of low-pressure nitrogen enters the 3rd heat exchanger (15), and the low-pressure nitrogen heat exchange with 30-50 DEG C is cooled to 50-70 DEG C and goes out the 3rd heat exchanger (15)；
4) low-pressure nitrogen of 50-70 DEG C continues into the second heat exchanger (14), and with cooling water heat exchange, final 30-50 DEG C of low-pressure nitrogen goes out the second heat exchanger (14).
CN201410558341.0A 2014-10-21 2014-10-21 One low-pressure nitrogen carries out regenerating molecular sieve energy conserving system and method Active CN104324688B (en)

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CN106495183B (en) * 2016-11-07 2018-12-18 广东华特气体股份有限公司 A kind of purification process of ammonia

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010017546U1 (en) * 2010-03-12 2012-03-06 Dge Dr.-Ing. Günther Engineering Gmbh Device for the adsorptive drying of purified biogas and regeneration of loaded adsorbents
CN202666872U (en) * 2012-07-17 2013-01-16 六九硅业有限公司 Molecular sieve regeneration equipment
CN203240858U (en) * 2013-04-01 2013-10-16 河南开元空分集团有限公司 Energy-saving regenerative gas heater and molecular sieve activating and regenerating heating system
CN203833613U (en) * 2014-05-29 2014-09-17 西梅卡亚洲气体系统成都有限公司 Energy saving type nitrogen deoxidizing carbon load purifying system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010017546U1 (en) * 2010-03-12 2012-03-06 Dge Dr.-Ing. Günther Engineering Gmbh Device for the adsorptive drying of purified biogas and regeneration of loaded adsorbents
CN202666872U (en) * 2012-07-17 2013-01-16 六九硅业有限公司 Molecular sieve regeneration equipment
CN203240858U (en) * 2013-04-01 2013-10-16 河南开元空分集团有限公司 Energy-saving regenerative gas heater and molecular sieve activating and regenerating heating system
CN203833613U (en) * 2014-05-29 2014-09-17 西梅卡亚洲气体系统成都有限公司 Energy saving type nitrogen deoxidizing carbon load purifying system

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