CN105169945B - The hypergravity pressure oxidation renovation process and special equipment of Wet-type oxidation sweetening technique - Google Patents
The hypergravity pressure oxidation renovation process and special equipment of Wet-type oxidation sweetening technique Download PDFInfo
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- CN105169945B CN105169945B CN201510552111.8A CN201510552111A CN105169945B CN 105169945 B CN105169945 B CN 105169945B CN 201510552111 A CN201510552111 A CN 201510552111A CN 105169945 B CN105169945 B CN 105169945B
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Abstract
The invention discloses the hypergravity pressure oxidation renovation process of Wet-type oxidation sweetening technique, methods described includes：Sulfur removing pregnant solution and the air from air compressor respectively enter hypergravity machine, and oxidation reaction occurs in filler, and catalyst is regenerated.Hypergravity machine gas out enters knockout drum, is emptied through catching after mist is removed water.Catalyst solution after oxidation regeneration enters vacuum tank, UNICOM between vacuum tank and knockout drum, to stablize the pressure of hypergravity machine.The solution of vacuum tank is extruded by pressure, continues to be reacted with hydrogen sulfide as the solution after regeneration.The method can significantly improve oxygenation efficiency, while treating capacity is big, floor space is small.
Description
Technical field：
The present invention relates to the hypergravity pressure oxidation renovation process and special equipment of Wet-type oxidation sweetening technique, it is adaptable to each
Plant the catalyst regeneration process of wet oxidation process.
Background technology：
Wet oxidation desulfurization is the hydrogen sulfide absorbed by solution to be oxidized into elementary sulfur in the liquid phase and is separated
Technique.It has removing high precision, and operating flexibility is big, and the low feature of operating cost uses catalyst not according to sweetening process
Together, Wet-type oxidation sweetening technique is divided into arsyl technique, vanadium base technique, three kinds of iron-based technique, and arsyl technique is low due to desulfuration efficiency,
It is less to use；The representative method of vanadium base technique is ADA methods, tannin process, and vanadium base technique has that Sulfur capacity is low, vanadium is to ring
The shortcomings of border pollutes, is limited by environmental protection.Iron-based technique is the representative technique such as mrichem companies of Complexing Iron sulfur removal technology
LO-CAT techniques, the Sulferox methods etc. of Shell and Dow companies exploitation, because Complexing Iron sulfur removal technology has nontoxic, height
Effect, high activity and it is widely used the advantages of high selectivity.The technique can be divided into the absorption and catalyst oxidation of hydrogen sulfide again
Raw two processes, solubility of the hydrogen sulfide in alkali lye is larger, and absorption is easy to carry out, and the selection of reactor is also more various, such as
LO-CAT technique absorbing reaction devices have the diversified forms such as bubble tower, packed tower, venturi, static mixer.And in oxidizing process
In, because solubility of the oxygen in ferrous solution is complexed is low, the liquid holdup that oxidation reactor has been used up is big, gas residence time
Bubble tower long, bubble tower has simple structure, and the characteristics of stable but bulky, mass-transfer efficiency is low, constrains Complexing Iron
Technique is minimized, the development of sledge dressization.
Hypergravity is Novel process strengthening device, has been applied to Complexing Iron sulfur removal technology, Chinese patent
200710101508.0 report a kind of method of hypergravity Complexing Iron desulfurization hydrogen sulfide, and the absorber of the method is using overweight
Power, oxidator uses bubble tower, and oxidation furnaces are huge, and efficiency is low.Chinese patent 201110076120.6 and China
201310353789.4 also report similar approach, but oxidizing process is carried out at ambient pressure using air, due to the partial pressure of oxygen
Low, concentration of oxygen gas is low, causes the oxidative rate of ferrous ion low, limits the disposal ability of technique.
The content of the invention：
One kind is provided it is an object of the invention to overcome it is an object of the invention to overcome the shortcomings of above-mentioned prior art
The deficiency of above-mentioned prior art and provide it is a kind of reduce oxidation furnaces size, shorten the oxidation regeneration time, oxidation efficiency is high.Improve
The hypergravity pressure oxidation renovation process of the Wet-type oxidation sweetening technique of the treating capacity of wet oxidation-desulfurizing technique and special set
It is standby.
The purpose of the present invention can be reached by following measure：The hypergravity pressure oxidation of Wet-type oxidation sweetening technique is again
Generation method, it comprises the following steps：
1) sulfur removing pregnant solution and the air from air compressor respectively enter hypergravity machine, oxidation occur in filler anti-
Should, catalyst is regenerated, wherein hypergravity machine pressure is not less than 0.06MPag；Air tolerance is higher than 1.2 times to 2 of theoretical tolerance
Times；Hypergravity machine rotating speed is between 300rmp to 2000rmp；Wherein theoretical tolerance is by iron ion and the O of reaction equation 1/2 of oxygen2
+ H2O +2Fe2+=OH- + 2Fe3+Calculate：
Theoretical air volume calculation formula：Q=（V*C/56/4）*22.4/η
Wherein Q:Theoretical tolerance, unit Nm3/h；
V:Into the rich solution flow of hypergravity machine, unit m3/h；
C：Iron ion content in rich solution, unit g/L；
η：Oxygen point rate in oxygen-enriched air；
Hypergravity machine gas out enters knockout drum, is emptied through catching after mist is removed water；
2) catalyst solution after oxidation regeneration enters vacuum tank, UNICOM between vacuum tank and knockout drum, with stabilization
The pressure of hypergravity machine, the solution of vacuum tank is extruded by pressure, continues to be reacted with hydrogen sulfide as the solution after regeneration.
The hypergravity pressure oxidation of Wet-type oxidation sweetening technique generating apparatus again, it is characterised in that it includes air compressor,
Air compressor connects hypergravity machine, and the gas outlet connection knockout drum of hypergravity machine, the liquid outlet connection of hypergravity machine is steady
Pressure tank, knockout drum and vacuum tank UNICOM.
The present invention can produce following good effect compared with the prior art：The present invention provides efficient oxygen under a kind of super gravity field
Change regenerative sulfur binding rich solution method, it combine wet oxidation-desulfurizing and hypergravity machine the characteristics of, by the pressure for improving oxidative system
Power, significantly enhances solubility of the oxygen in catalyst solution so that the effect of hypergravity reinforcing mass transfer gives full play to, oxygen
Rate is increased substantially.The method not only reduces the size of oxidation furnaces, while shortening the time of oxidation regeneration, improves wet
The treating capacity of method oxidation desulfuration process.Specifically, the present invention has advantages below：
1st, oxidation efficiency is high, and the oxygenation efficiency of single iron protoxide ion is more than 60%；
2nd, treating capacity is big, and the raising of the reinforcing effect of mass transmitting and catalyst oxidation regeneration rate of hypergravity increases wet method oxygen
Change the disposal ability of sulfur removal technology.
Brief description of the drawings：
Fig. 1 is the structural representation of hypergravity pressure oxidation of the invention generating apparatus again.
Specific embodiment：
Embodiment：The hypergravity pressure oxidation renovation process of Wet-type oxidation sweetening technique, it comprises the following steps：
1) sulfur removing pregnant solution and the air from air compressor respectively enter hypergravity machine, oxidation occur in filler anti-
Should, catalyst is regenerated, wherein hypergravity machine pressure is not less than 0.06MPag；Air tolerance is higher than 1.2 times to 2 of theoretical tolerance
Times；Hypergravity machine rotating speed is between 300rmp to 2000rmp.Wherein theoretical tolerance is by iron ion and the O of reaction equation 1/2 of oxygen2
+ H2O +2Fe2+=OH- + 2Fe3+Calculate：
Theoretical air volume calculation formula：Q=（V*C/56/4）*22.4/η
Wherein Q:Theoretical tolerance, unit Nm3/h；
V:Into the rich solution flow of hypergravity machine, unit m3/h；
C：Iron ion content in rich solution, unit g/L；
η：Oxygen point rate in oxygen-enriched air；
Hypergravity machine gas out enters knockout drum, is emptied through catching after mist is removed water.
2) catalyst solution after oxidation regeneration enters vacuum tank, UNICOM between vacuum tank and knockout drum, with stabilization
The pressure of hypergravity machine, the solution of vacuum tank is extruded by pressure, continues to be reacted with hydrogen sulfide as the solution after regeneration.
The hypergravity pressure oxidation of Wet-type oxidation sweetening technique generating apparatus again（Referring to Fig. 1）, it includes air compressor 1,
Air compressor 1 connects hypergravity machine 2, and the gas outlet connection knockout drum 3 of hypergravity machine 2, the liquid outlet of hypergravity machine 2 connects
Meet vacuum tank 3, knockout drum 3 and the UNICOM of vacuum tank 3.
When carrying out oxidation regeneration, sulfur removing pregnant solution and the forced air from air compressor 1 respectively enter hypergravity machine 2,
There is oxidation reaction in filler, catalyst is regenerated.The gas out of hypergravity machine 2 enters knockout drum 3, is removed through catching mist
Emptied after water.Catalyst solution after oxidation regeneration enters vacuum tank 4, UNICOM between vacuum tank 4 and knockout drum 3, with steady
Determine the pressure of hypergravity machine 2.The solution of vacuum tank 4 is extruded by pressure, continues to be reacted with hydrogen sulfide as the solution after regeneration.
By changing oxygen concentration in air, and then rich solution oxidation regeneration technique is evaluated.Related data is shown in Table 1,
5 kinds of working conditions are listed in table, the data under every kind of operating mode are continuous and steady operation the data obtaineds in the case of 48 hours
Average value.
The Complexing Iron catalysis that catalyst used in the following example is provided for Yantai Xin Rui Environmental Protection Technology Co., Ltd
Agent.Hypergravity machine rotating speed 1500rmp；
Be can be seen that after the pressurizing from the contrast of embodiment 1 and 2,3,4,5, the oxygenation efficiency of ferrous ion is significantly improved.
Desulfurizing agent in above-described embodiment can also use other existing desulfurizing agents containing chelates ferric ions, the above
Embodiment is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is defined, and is not being taken off
On the premise of design spirit of the present invention, the various changes that this area ordinary skill technical staff makes to technical scheme
Shape and improvement, all should fall into the protection domain of claims of the present invention determination.
Claims (1)
1. the hypergravity pressure oxidation renovation process of Wet-type oxidation sweetening technique, it comprises the following steps：
Sulfur removing pregnant solution and the air from air compressor respectively enter hypergravity machine, and oxidation reaction occurs in filler, will urge
Agent regenerates, and wherein hypergravity machine pressure is not less than 0.06MPag；Air tolerance is higher than 1.2 times to 2 times of theoretical tolerance；It is overweight
Power machine rotating speed is between 300rmp to 2000rmp；Wherein theoretical tolerance is by iron ion and the O of reaction equation 1/2 of oxygen2 + H2O +
2Fe2+=OH- + 2Fe3+Calculate：
Theoretical air volume calculation formula：Q=（V*C/56/4）*22.4/η
Wherein Q：Theoretical tolerance, unit Nm3/h；
V：Into the rich solution flow of hypergravity machine, unit m3/h；
C：Iron ion content in rich solution, unit g/L；
η：Oxygen point rate in oxygen-enriched air；
Hypergravity machine gas out enters knockout drum, is emptied through catching after mist is removed water；
Catalyst solution after oxidation regeneration enters vacuum tank, UNICOM between vacuum tank and knockout drum, to stablize hypergravity
The pressure of machine, the solution of vacuum tank is extruded by pressure, continues to be reacted with hydrogen sulfide as the solution after regeneration.
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Address after: 264006 No. 3-12 Kaifeng Road, Yantai Development Zone, Shandong Province, No. 1-2 Patentee after: YANTAIF SUNRISE ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY CO., LTD. Address before: 264000 4th Floor, Tonghe Group, No. 9 Binglun West Road, Zhifu District, Yantai City, Shandong Province Patentee before: YANTAIF SUNRISE ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY CO., LTD. |
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Denomination of invention: Supergravity pressurization oxidation regeneration method of wet oxidation desulfurization process, and special equipment thereof Effective date of registration: 20190415 Granted publication date: 20170609 Pledgee: Yantai financing Company Limited by Guarantee Pledgor: YANTAIF SUNRISE ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY CO., LTD. Registration number: 2019980000068 |
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Date of cancellation: 20200422 Granted publication date: 20170609 Pledgee: Yantai financing Company Limited by Guarantee Pledgor: YANTAI SUNRISE ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: 2019980000068 |