CN102557167A - Atmospheric analytical recovery tower for high-ammonia-content wastewater - Google Patents
Atmospheric analytical recovery tower for high-ammonia-content wastewater Download PDFInfo
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- CN102557167A CN102557167A CN2011103670552A CN201110367055A CN102557167A CN 102557167 A CN102557167 A CN 102557167A CN 2011103670552 A CN2011103670552 A CN 2011103670552A CN 201110367055 A CN201110367055 A CN 201110367055A CN 102557167 A CN102557167 A CN 102557167A
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Abstract
The invention relates to an atmospheric analytical recovery tower for high-ammonia-content wastewater, belonging to the equipment for chemical industry. The atmospheric analytical recovery tower for the high-ammonia-content wastewater consists of a tower body, a feed distributor, a steam distributor, stripping-section stainless steel structured packing materials, a rectifying-section stainless steel structured packing material and a titanium condenser, wherein the upper section of the tower body is a rectifying section, the lower section of the tower body is a stripping section, a feeding port and the feed distributor are arranged at the boundary of the rectifying section and the stripping section, the upper end and the lower end of the tower body are respectively provided with a gas phase outlet and a discharging port, the titanium condenser and the rectifying-section stainless steel structured packing material are sequentially arranged below the gas phase outlet, the stripping-section stainless steel structured packing materials and a steam inlet are sequentially arranged below the feed distributor, and the steam distributor is arranged at the feed distributor. The atmospheric analytical recovery tower for the high-ammonia-content wastewater has the advantages of good effect in recovery, implementation of atmospheric recovery, good equipment stability, cost-saving performance, and energy-saving performance and environment-friendliness.
Description
Technical field
The present invention relates to a kind of high ammonia-containing water normal pressure and resolve regenerating column, belong to a kind of chemical plant.
Background technology
Liquidus temperature is about 100 ℃, 125 ℃ at the bottom of existing pressurization ammonia still cat head gas phase, the tower; Column bottom temperature increases the weight of stainless corrosion at 120 ℃～130 ℃ interval methyl carbonic acid ammoniums that can produce; Cause upper strata tower body, cat head interchanger, Stainless Steel Helices, cat head gas phase corrosive pipeline to leak; Have to stop and repair or change, pipe leakage can occur, need to change Stainless Steel Helices need removable parts tower body about 2 years after 1 year in general about three months; The running cost that causes equipment restricts the economic benefit of manufacturing enterprise than higher; Because filler is short work-ing life; Be easy to add that various stainless steel pipes leak because corrosion causes the ammonia still process decrease in efficiency, ammonia still process pressure can't be guaranteed; The situation that the waste liquid ammonia nitrogen exceeds standard after the ammonia still process happens occasionally (waste liquid contains ammonia nitrogen greater than 35ppm); Directly influence the ammonia nitrogen discharge index of the total drain of manufacturing enterprise, total row's mouthful on-line monitoring, environmental issue is more outstanding.
Summary of the invention
Technical problem to be solved by this invention provides a kind of reasonable in design, recovering effect is good, the realization normal pressure reclaims, stabilization of equipment performance is good, practice thrift the high ammonia-containing water normal pressure parsing regenerating column of cost, energy-conserving and environment-protective.
It is that this high ammonia-containing water normal pressure is resolved regenerating column that the present invention solves the problems of the technologies described above the technical scheme that is adopted; Its constructional feature is: be made up of tower body, feed distributor, steam distributor, the structured packing of stripping section stainless steel, the structured packing of rectifying section stainless steel, titanium material condensing surface; The epimere of said tower body is a rectifying section; Hypomere is a stripping section; The boundary of said rectifying section and stripping section is provided with opening for feed and feed distributor, and the top and bottom of described tower body are respectively arranged with gaseous phase outlet and discharge port, and the below of gaseous phase outlet is followed successively by titanium material condensing surface and the structured packing of rectifying section stainless steel; The below of feed distributor is followed successively by structured packing of stripping section stainless steel and steam inlet, and said steam inlet goes out to be provided with steam distributor.
As preferably, stripping section stainless steel of the present invention structured packing is divided into stainless steel structured packing, middle stainless steel structured packing, stainless steel structured packing down.
As preferably, the length that goes up stainless steel structured packing, middle stainless steel structured packing, stainless steel structured packing down of the present invention is 5130 millimeters.
As preferably, the material of stripping section stainless steel of the present invention structured packing, the structured packing of rectifying section stainless steel is titanium material or 316L stainless steel.
As preferably, the length of rectifying section stainless steel of the present invention structured packing is 2140 millimeters.
The present invention compares with prior art and has the following advantages and effect: the present invention adopts about 90 ℃ of tower top temperatures after the normal pressure ammonia still process technology, about 100 ℃ of column bottom temperatures; Temperature reduces greatly; The corrosion situation also reduces greatly, and prolong at least more than one times the work-ing life of conservative estimation Analytic Tower and filler.
2, distilled ammonia waste liquid long-term≤20mg/L, most situation 0mg/L, it is no problem discharge, even can work as with general soft water and be back to use in the production system, not only minimizing is discharged, and also for production system a considerable amount of process waters is provided.
3, the strong ammonia wastewater in the soda ash production contains carbonate and chlorion, and biodegradability is poor, and this technology for recovery ammonia wherein makes the ammonia-containing water qualified discharge, reduces the consumption of the soda ash resources of production, and control reduces the pollution to environment.
4, do not exist and influence environmental protection because of the ammonia still process effect is undesirable.
5, the stability of equipment is better, reduces maintenance and the cost of safeguarding and the loss of stopping production.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Label declaration: tower body 1, upward stainless steel structured packing 2, middle stainless steel structured packing 3, stainless steel structured packing 4 down, opening for feed 5, feed distributor 6, discharge port 7, steam inlet 8, steam distributor 9, rectifying section stainless steel structured packing 10, titanium material condensing surface 11, gaseous phase outlet 12.
Embodiment
Below in conjunction with embodiment the present invention is done further detailed description, following examples are to explanation of the present invention and the present invention is not limited to following examples.
Embodiment 1: as shown in Figure 1, the main body of present embodiment is a tower body 1, opening for feed 5 chargings (the about 30mg/L of ammonia content) at 23.7 meters of tower height; Feed liquid is through feed distributor 6 uniform distributions; Through last stainless steel structured packing 2, middle stainless steel structured packing 3, stainless steel structured packing 4 down, every layer height is 5.13 meters from top to bottom, and overall height is 15.4 meters; Carry and heating up in a steamer, at the bottom of the tower through discharge port 7 dischargings (the waste liquid ammonia content is 0mg/L).
Simultaneously, the saturated LP steam of 0.6MPa gets into steam distributor 9 through steam inlet 8 and carries out uniform distribution, passes through stainless steel structured packing 4 down, middle stainless steel structured packing 3 from bottom to top, goes up the stripping section of stainless steel structured packing 2; Carry out reverse mass-and heat-transfer with feed liquid from top to down; Parse the free ammonia in the feed liquid, this part contains the rectifying section of ammonia gas through the superiors, and gas is separated with liquid more completely; Get into top titanium material condensing surface 11; Through the appropriateness cooling, produce vapour-liquid and reflux, thereby obtain quite purified single-component product ammonia at the gaseous phase outlet 12 of cat head; Get into the absorption tower and absorb, improved the assimilated efficiency on absorption tower.
The whole process using DCS of this system os is controlled, and steam consumption and inlet amount are carried out ratio control, and vapour material ratio is controlled at about 0.35 at present; Temperature teletransmission temperature spot is set between each layer filler and the filler; With cat head the teletransmission spot pressure is set at the bottom of the tower, in time understands tower internal reaction situation, prevent situation such as stifled tower; Overhead condensation temperature and condensing surface flooding quantity are regulated through pneumatic adjusting valve automatically, guarantee that the condensing temperature temperature is about 70 ℃.
In the present embodiment; Last stainless steel structured packing 2, middle stainless steel structured packing 3, down the material result of stainless steel structured packing 4 and rectifying section stainless steel structured packing 10 best should be titanium material, 316L stainless steel; Because of the titanium material is more expensive, present embodiment adopts the 316L stainless steel.
My company joins the light liquid Distallation systm of alkali subsidiary factory and adopts new and effective high ammonia-containing water normal pressure to resolve recovery technology; In August, 2010, input was moved highly stable so far; Ammon residue amount is in the level of 0mg/L always in the waste liquid of bottom, does not have any leakage, and the operations index is highly stable.
In addition, need to prove, the specific embodiment described in this specification sheets, its zero, the shape of parts, institute's title of being named etc. can be different.Allly conceive equivalence or the simple change that described structure, characteristic and principle are done, include in the protection domain of patent of the present invention according to patent of the present invention.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; Only otherwise depart from structure of the present invention or surmount the defined scope of these claims, all should belong to protection scope of the present invention.
Claims (5)
1. one kind high ammonia-containing water normal pressure is resolved regenerating column; It is characterized in that: form by tower body, feed distributor, steam distributor, the structured packing of stripping section stainless steel, the structured packing of rectifying section stainless steel, titanium material condensing surface; The epimere of said tower body is a rectifying section; Hypomere is a stripping section; The boundary of said rectifying section and stripping section is provided with opening for feed and feed distributor, and the top and bottom of described tower body are respectively arranged with gaseous phase outlet and discharge port, and the below of gaseous phase outlet is followed successively by titanium material condensing surface and the structured packing of rectifying section stainless steel; The below of feed distributor is followed successively by structured packing of stripping section stainless steel and steam inlet, and said steam inlet goes out to be provided with steam distributor.
2. high ammonia-containing water normal pressure according to claim 1 is resolved regenerating column, it is characterized in that: the structured packing of described stripping section stainless steel is divided into stainless steel structured packing, middle stainless steel structured packing, stainless steel structured packing down.
3. high ammonia-containing water normal pressure according to claim 2 is resolved regenerating column, it is characterized in that: the described length that goes up stainless steel structured packing, middle stainless steel structured packing, stainless steel structured packing down is 5130 millimeters.
4. high ammonia-containing water normal pressure according to claim 1 is resolved regenerating column, and it is characterized in that: the material of the structured packing of described stripping section stainless steel, the structured packing of rectifying section stainless steel is titanium material or 316L stainless steel.
5. high ammonia-containing water normal pressure according to claim 1 is resolved regenerating column, and it is characterized in that: the length of described rectifying section stainless steel structured packing is 2140 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103670552A CN102557167A (en) | 2011-11-18 | 2011-11-18 | Atmospheric analytical recovery tower for high-ammonia-content wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103670552A CN102557167A (en) | 2011-11-18 | 2011-11-18 | Atmospheric analytical recovery tower for high-ammonia-content wastewater |
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| CN102557167A true CN102557167A (en) | 2012-07-11 |
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| CN2011103670552A Pending CN102557167A (en) | 2011-11-18 | 2011-11-18 | Atmospheric analytical recovery tower for high-ammonia-content wastewater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD216229A1 (en) * | 1983-06-27 | 1984-12-05 | Leuna Werke Veb | METHOD FOR REMOVING CONTAMINATION FROM PROCESSING WATERS |
| WO1996011732A1 (en) * | 1993-09-03 | 1996-04-25 | Farmland Industries, Inc. | Apparatus configuration and method of treating process condensate |
| CN2284638Y (en) * | 1997-03-24 | 1998-06-24 | 化学工业部上海化工研究院 | Desorption tower for thin ammonia water containing carbon dioxide |
| CN1446305A (en) * | 2000-08-03 | 2003-10-01 | 罗基研究公司 | Improved aqua-ammonia absorption system gnerator ultilizing structured packing |
| CN101428820A (en) * | 2008-12-06 | 2009-05-13 | 李大路 | Process for recycling liquid ammonia from coke oven gas |
-
2011
- 2011-11-18 CN CN2011103670552A patent/CN102557167A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD216229A1 (en) * | 1983-06-27 | 1984-12-05 | Leuna Werke Veb | METHOD FOR REMOVING CONTAMINATION FROM PROCESSING WATERS |
| WO1996011732A1 (en) * | 1993-09-03 | 1996-04-25 | Farmland Industries, Inc. | Apparatus configuration and method of treating process condensate |
| CN2284638Y (en) * | 1997-03-24 | 1998-06-24 | 化学工业部上海化工研究院 | Desorption tower for thin ammonia water containing carbon dioxide |
| CN1446305A (en) * | 2000-08-03 | 2003-10-01 | 罗基研究公司 | Improved aqua-ammonia absorption system gnerator ultilizing structured packing |
| CN101428820A (en) * | 2008-12-06 | 2009-05-13 | 李大路 | Process for recycling liquid ammonia from coke oven gas |
Non-Patent Citations (1)
| Title |
|---|
| 王贵文等: "操作压力对加压精馏装置能耗的影响", 《化工科技》 * |
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Application publication date: 20120711 |