CN102358656B - Residual ammonia water degreasing method - Google Patents
Residual ammonia water degreasing method Download PDFInfo
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- CN102358656B CN102358656B CN 201110271755 CN201110271755A CN102358656B CN 102358656 B CN102358656 B CN 102358656B CN 201110271755 CN201110271755 CN 201110271755 CN 201110271755 A CN201110271755 A CN 201110271755A CN 102358656 B CN102358656 B CN 102358656B
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Abstract
The invention provides a residual ammonia water degreasing method belongs to the field of machinery. The invention aims to solve the problems of the existing process for treating residual ammonia water that the tar treatment effect is bad, only a residual ammonia water tank is used for treating all the residual ammonia water, the effective volume is small and the treatment efficiency is reduced; and the branched pipes of a tar-removing device are always blocked, a turning plate rotation shaft in a tar precipitator moves sluggishly and the tar content of the treated water is high. The method comprises the following steps: 1) pumping the residual ammonia water to the tar-removing device by the circulating ammonia water tank; 2) discharging the water treated by the tar-removing device into the residual ammonia water tank or a residual ammonia water intermediate tank, pumping the residual ammonia water which is higher than a pipeline 2 in the tank into an ammonia distillation tower, and standing the residual ammonia water which is lower than the pipeline 2 to precipitate; 3) precipitating the residual ammonia water for 20-30 hours and then pumping into the ammonia distillation tower; and 4) discharging the wastewater treated by the ammonia distillation tower into a dephenolization station, and delivering the wastewater to the coking operation area for quenching and the coal yard for dust removal respectively by virtue of the dephenolization station.
Description
Technical field
The present invention relates to a kind of residual ammonia water degreasing method, belong to mechanical field.
Background technology
The coal-tar middle oil standard content of coke-oven plant's remained ammonia groove should be less than 150mg/L, and still, on-site sampling is chemically examined, and tar content has surpassed standard content from far away up to 324mg/L.Therefore the coke-oven plant will carry out the tar removing processing to remained ammonia, existing a kind of residual ammonia water degreasing method as shown in Figure 2, this device comprises oil-circulating ammonia water tank 1, remained ammonia groove 2, remained ammonia medial launder 3, tar remover 4, ammonia still 5, dephenolize station 6, tar remover import pump 7, tar remover inlet valve 8, remained ammonia pump 9, ammonia vessel outlet valve 10, ammonia vessel inlet valve 11, oil-circulating ammonia water tank outlet pump 12 and oil-circulating ammonia water tank outlet valve 13, adopt this device to the remained ammonia oil removing, its technique is:
1, the remainder of industrial ammoniacal liquor (remained ammonia) by oil-circulating ammonia water tank 1 to remained ammonia medial launder 3;
2, the remained ammonia pump in the remained ammonia medial launder 3 is to tar remover 4, again to remained ammonia groove 2;
3, the remained ammonia pump in the remained ammonia groove 2 is to ammonia still 5;
4,5 pairs of remained ammonia distillations of ammonia still are processed, at ammonia still remained ammonia is distilled in the treating processes, ammonia still 5 internal resistances are poor to rise to 8-9KPa by initial 3-5KPa, and then with processed waste water by ammonia still 5 to dephenolize station 6, it is high that waste water after ammonia still 5 is processed enters dephenolize station 6 tar contents, cause in the system active sludge to be killed, affect water treatment effect;
5, by dephenolize station 6 respectively to the quenching of coking working district and coal yard depositing dust.
The tar effect of above-mentioned art breading remained ammonia is bad, only processes whole remained ammonias with the remained ammonia groove, and its useful volume is little, and processing efficiency reduces; And because the coal-tar middle oil content of remained ammonia is high, and ammonia still 5 bottoms need labor cleaning's coke tar refuse, on average per month up to more than 20 times; The high phenomenon of water tar content after the turnover panel rotating shaft is stagnated, processes in the stifled tar remover subtube of the frequent generation of existing art breading tar, the tar device.
Summary of the invention
The present invention seeks to for the tar effect that solves existing art breading remained ammonia badly, only process whole remained ammonias with the remained ammonia groove, its useful volume is little, the processing efficiency reduction; The high problem of water tar content after the turnover panel rotating shaft is stagnated, processes in stifled tar remover subtube, the tar device often occurs, and a kind of residual ammonia water degreasing method is provided.
A kind of residual ammonia water degreasing method of the present invention, the device that the method is used comprises oil-circulating ammonia water tank, remained ammonia groove, remained ammonia medial launder, tar remover, ammonia still, dephenolize station, tar remover import pump, tar remover inlet valve, remained ammonia pump, ammonia vessel outlet valve, ammonia vessel inlet valve, medial launder outlet valve and medial launder inlet valve
Pass through No. 1 pipeline connection between the entrance of oil-circulating ammonia water tank and tar remover, and at No. 1 pipeline tar remover import pump and tar remover inlet valve are set, pass through No. 2 pipeline connections between the outlet of tar remover and the remained ammonia groove, and at No. 2 pipelines the ammonia vessel inlet valve is set, pass through No. 3 pipeline connections between the outlet of tar remover and the remained ammonia medial launder, and at No. 3 pipelines the medial launder inlet valve is set, No. 2 pipeline is identical with No. 3 pipeline height
On the pipeline of remained ammonia groove outlet the ammonia vessel outlet valve is set, on the pipeline of remained ammonia medial launder outlet the medial launder outlet valve is set, after being combined, the pipeline of the outlet of remained ammonia groove and remained ammonia medial launder is communicated with ammonia still by No. 4 pipelines again, and at No. 4 pipelines the remained ammonia pump is set, pipeline connection between ammonia still and the dephenolize station
Described residual ammonia water degreasing method may further comprise the steps:
With exceed in remained ammonia groove or the remained ammonia medial launder No. 2 pipelines, the current remained ammonia that enters to ammonia still, is lower than the static reservation of remained ammonia of No. 2 pipelines by remained ammonia pump pump in remained ammonia groove or the remained ammonia medial launder, allow its precipitation;
Advantage of the present invention: improved the remained ammonia deoiling effect, guaranteed ammonia steaming system steady running, made ammonium sulfate product output unaffected; Reduce coke cleaning dregs of fat number of times, reduced labor strength; Reduced because of the impact of distilled ammonia wastewater oleaginousness height on phenol water disposal system activity mud.
Description of drawings
Fig. 1 is the schema of the inventive method;
Fig. 2 is the structural representation of existing residual ammonia water degreasing method institute using appts in the background technology;
Fig. 3 is the structural representation of a kind of residual ammonia water degreasing method of the present invention institute using appts.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 and Fig. 3, the described a kind of residual ammonia water degreasing method of present embodiment, the device that the method is used comprises oil-circulating ammonia water tank 1, remained ammonia groove 2, remained ammonia medial launder 3, tar remover 4, ammonia still 5, dephenolize station 6, tar remover import pump 7, tar remover inlet valve 8, remained ammonia pump 9, ammonia vessel outlet valve 10, ammonia vessel inlet valve 11, medial launder outlet valve 14 and medial launder inlet valve 15
Pass through No. 1 pipeline connection between the entrance of oil-circulating ammonia water tank 1 and tar remover 4, and at No. 1 pipeline tar remover import pump 7 and tar remover inlet valve 8 are set, pass through No. 2 pipeline connections between the outlet of tar remover 4 and the remained ammonia groove 2, and at No. 2 pipelines ammonia vessel inlet valve 11 is set, pass through No. 3 pipeline connections between the outlet of tar remover 4 and the remained ammonia medial launder 3, and it is identical with No. 3 pipeline height at No. 3 pipelines 15, No. 2 pipelines of medial launder inlet valve to be set
On the pipeline of remained ammonia groove 2 outlets ammonia vessel outlet valve 10 is set, on the pipeline of remained ammonia medial launder 3 outlets medial launder outlet valve 14 is set, after being combined, the pipeline of the outlet of remained ammonia groove 2 and remained ammonia medial launder 3 is communicated with ammonia still 5 by No. 4 pipelines again, and at No. 4 pipelines remained ammonia pump 9 is set, pipeline connection between ammonia still 5 and the dephenolize station 6, it is characterized in that
Described residual ammonia water degreasing method may further comprise the steps:
With exceed in remained ammonia groove 2 or the remained ammonia medial launder 3 No. 2 pipelines, the current remained ammonia that enters by remained ammonia pump 9 pumps to ammonia still 5, be lower than the static reservation of remained ammonia of No. 2 pipelines in remained ammonia groove 2 or the remained ammonia medial launder 3, allow its precipitation;
Affecting the remained ammonia deoiling effect has several factors, have artificial work can factor, more be because equipment is advanced not, oil removal efficiency is low to be caused.
Existing a kind of residual ammonia water degreasing method, the problem of its several frequent appearance is: remained ammonia medial launder useful volume is little, remained ammonia groove 2 interior tar content laboratory values exceed standard; Stifled tar remover 4 subtubes; 4 of tar removers in the turnover panel rotating shafts stagnated etc.In order to improve this several situations, carried out several easily improvement:
1, little, the remained ammonia groove 2 interior tar content laboratory values of remained ammonia medial launder useful volume exceed standard.In order to solve little this problem of remained ammonia medial launder useful volume, improve on basis at original pipeline, original part pipeline is: " between the outlet of tar remover 4 and the remained ammonia groove 2 by No. 2 pipeline connections; and at No. 2 pipelines ammonia vessel inlet valve 11 is set ", between the outlet of tar remover 4 and remained ammonia medial launder 3, pass through No. 3 pipeline connections now, and at No. 3 pipelines medial launder inlet valve 15 is set, described No. 3 pipelines and No. 2 pipelines are combined the communicating pipe that is equivalent between remained ammonia groove 2 and the remained ammonia medial launder 3, fully different from original circuit design, remained ammonia groove 2 after the improvement and remained ammonia medial launder 3 are for being set up in parallel, Redundancy Design, increased the rest time of remained ammonia in groove, except ammonia efficient improves.
The problem that exceeds standard in order to solve remained ammonia groove 2 interior tar content laboratory values, between the entrance of oil-circulating ammonia water tank 1 and tar remover 4, pass through No. 1 pipeline connection, and at No. 1 pipeline tar remover import pump 7 and tar remover inlet valve 8 are set, the direct decoking of ammoniacal liquor that allows oil-circulating ammonia water tank 1 discharge does not have, and the number of times that then exceeds standard is by dropping to for 4 times 1.9 times per month.
2, stifled tar remover 4 subtubes.In order to address this problem, on a plurality of minutes pipelines of tar remover 4, install respectively 1 valve additional.After improving like this, per month tar remover obstruction and the sluggish total degree of interior turnover panel are dropped to 1 time by 4.33 times.
3,4 not interior turnover panel rotating shafts of tar remover are stagnated.In order to address this problem, add 6 minutes writing brush, valve in tar remover 4 bodies one side, when latch up phenomenon appears in pipeline, can add herein steaming out, prevent from emitting the leakage phenomenon because of the tar that obstruction occurs, solve the coke tar refuse that causes because of long-time running and stopped up the not smooth problem of pipeline circulation, the problem of adjust flux inequality of causing.
Device after the improvement, its technique is:
1, by oil-circulating ammonia water tank 1 pump to tar remover 4, again to remained ammonia groove 2 or remained ammonia medial launder 3; Remained ammonia groove 2 and remained ammonia medial launder 3 are standby each other, use one to receive the remained ammonia that oil-circulating ammonia water tank 1 is discharged, and another is used for the precipitation ammoniacal liquor of yesterday, has increased rest time, and it is effective that ammonia is removed;
The remained ammonia groove that is using or the ammoniacal liquor that exceeds communicating pipe in the remained ammonia medial launder by pump to ammonia still;
2, the aqua ammonia pump after will precipitating yesterday is to ammonia still 5;
3, by ammonia still 5 to dephenolize station 6;
4, by dephenolize station 6 respectively to the quenching of coking working district and coal yard depositing dust.
The coke-oven plant has recorded in 2008 that to affect remained ammonia deoiling effect data in three months detailed, such as table 1 to shown in the table 4.
It is detailed that table 1 affects remained ammonia deoiling effect data in October, 2008
It is detailed that table 2 affects remained ammonia deoiling effect data in November, 2008
It is detailed that table 3 affects remained ammonia deoiling effect data in December, 2008
Affecting remained ammonia deoiling effect data the table 4 10-12 month in 2008 gathers
Device after improving through the present invention carries out the remained ammonia oil removing, and the fault of appearance has obviously reduced, and the coke-oven plant has recorded 8 months fault data, specifically referring to table 5 to table 12.
Table 5 in January, 2009 remained ammonia deoiling effect data are detailed
Table 6 in February, 2009 remained ammonia deoiling effect data are detailed
Table 7 in March, 2009 remained ammonia deoiling effect data are detailed
Table 8 in April, 2009 remained ammonia deoiling effect data are detailed
Table 9 in May, 2009 remained ammonia deoiling effect data are detailed
Table 10 in June, 2009 remained ammonia deoiling effect data are detailed
Table 11 in July, 2009 remained ammonia deoiling effect data are detailed
Table 12 in August, 2009 remained ammonia deoiling effect data are detailed
With the rear Data Comparison summary sheet of improvement, as shown in table 13 before the below provides and improves:
Table 13
Embodiment two: present embodiment is described further embodiment one, and No. 1 pipeline is the pipeline of DN80, long 8m～15m.
Embodiment three: present embodiment is described further embodiment two, and tar remover inlet valve 8 is the DN80 valve.
Embodiment four: present embodiment is described further embodiment one, and No. 3 pipelines are DN200, the pipeline of long 10m～25m.
Embodiment five: present embodiment is described further embodiment one, and medial launder inlet valve 15 is the DN200 valve.
Embodiment six: present embodiment is described further embodiment one, it also comprises decoking steaming out valve 16, decoking steaming out valve 16 is arranged on the outside of tar remover 4 by No. 5 pipelines and apart from tar remover 4 bottoms 1/3h～1/4h place, h represents the height of tar remover 4.
Embodiment seven: present embodiment is described further embodiment six, and No. 5 pipelines are 6 minutes writing brushes.
Embodiment eight: present embodiment is described further embodiment six, and decoking steaming out valve 16 is the DN80 valve.
Claims (7)
1. residual ammonia water degreasing method, the device that the method is used comprises oil-circulating ammonia water tank (1), remained ammonia groove (2), remained ammonia medial launder (3), tar remover (4), ammonia still (5), dephenolize station (6), tar remover import pump (7), tar remover inlet valve (8), remained ammonia pump (9), ammonia vessel outlet valve (10), ammonia vessel inlet valve (11), medial launder outlet valve (14) and medial launder inlet valve (15), described device also comprises decoking steaming out valve (16)
Pass through No. 1 pipeline connection between the entrance of oil-circulating ammonia water tank (1) and tar remover (4), and at No. 1 pipeline tar remover import pump (7) and tar remover inlet valve (8) are set, pass through No. 2 pipeline connections between the outlet of tar remover (4) and the remained ammonia groove (2), and at No. 2 pipelines ammonia vessel inlet valve (11) is set, pass through No. 3 pipeline connections between the outlet of tar remover (4) and the remained ammonia medial launder (3), and at No. 3 pipelines medial launder inlet valve (15) is set, No. 2 pipeline is identical with No. 3 pipeline height, decoking steaming out valve (16) is arranged on the outside of tar remover (4) by No. 5 pipelines, and apart from 1/3h～1/4h place, tar remover (4) bottom, h represents the height of tar remover (4)
On the pipeline of remained ammonia groove (2) outlet ammonia vessel outlet valve (10) is set, on the pipeline of remained ammonia medial launder (3) outlet medial launder outlet valve (14) is set, after being combined, the pipeline of the outlet of remained ammonia groove (2) and remained ammonia medial launder (3) is communicated with ammonia still (5) by No. 4 pipelines again, and at No. 4 pipelines remained ammonia pump (9) is set, pipeline connection between ammonia still (5) and dephenolize station (6)
It is characterized in that,
Described residual ammonia water degreasing method may further comprise the steps:
Step 1, oil-circulating ammonia water tank (1) with remained ammonia by tar remover import pump (7) and tar remover inlet valve (8) pump to tar remover (4);
Step 2, the remained ammonia of processing through tar remover (4) enter remained ammonia groove (2) by ammonia vessel inlet valve (11), perhaps enter remained ammonia medial launder (3) by medial launder inlet valve (15), one of them is used for collecting the current remained ammonia that enters remained ammonia groove (2) and remained ammonia medial launder (3), another is used for precipitating previous workaday remained ammonia, the two is used alternatingly
With exceed in remained ammonia groove (2) or the remained ammonia medial launder (3) No. 2 pipelines, the current remained ammonia that enters by remained ammonia pump (9) pump to ammonia still (5), be lower than the static reservation of remained ammonia of No. 2 pipelines in remained ammonia groove (2) or the remained ammonia medial launder (3), allow its precipitation;
Step 3, upper workaday remained ammonia precipitation be after 20 hours～30 hours, by remained ammonia pump (9) pump to ammonia still (5);
Step 4, the waste water that distills after processing through ammonia still (5) drain into dephenolize station (6), are delivered to respectively the coking working district by dephenolize station (6) and are used for quenching, are delivered to coal yard and are used for depositing dust.
2. a kind of residual ammonia water degreasing method according to claim 1 is characterized in that, No. 1 pipeline is the pipeline of DN80, long 8m～15m.
3. a kind of residual ammonia water degreasing method according to claim 1 is characterized in that, tar remover inlet valve (8) is the DN80 valve.
4. a kind of residual ammonia water degreasing method according to claim 1 is characterized in that, No. 3 pipelines are DN200, the pipeline of long 10m～25m.
5. a kind of residual ammonia water degreasing method according to claim 1 is characterized in that, medial launder inlet valve (15) is the DN200 valve.
6. a kind of residual ammonia water degreasing method according to claim 1 is characterized in that, No. 5 pipelines are 6 minutes writing brushes.
7. a kind of residual ammonia water degreasing method according to claim 1 is characterized in that, decoking steaming out valve (16) is the DN80 valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110271755 CN102358656B (en) | 2011-09-14 | 2011-09-14 | Residual ammonia water degreasing method |
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| CN 201110271755 CN102358656B (en) | 2011-09-14 | 2011-09-14 | Residual ammonia water degreasing method |
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| CN102358656B true CN102358656B (en) | 2013-03-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103073145A (en) * | 2013-02-01 | 2013-05-01 | 济钢集团有限公司 | System for recovering light oil from residual ammonia water |
| CN103203336B (en) * | 2013-03-26 | 2014-12-31 | 鞍钢股份有限公司 | Ammonia distillation system cleaning device and method |
| CN103408182A (en) * | 2013-08-23 | 2013-11-27 | 济钢集团有限公司 | Process for deoiling residual ammonia water |
| CN105819610B (en) * | 2016-05-31 | 2018-06-22 | 中冶焦耐工程技术有限公司 | A kind of ammonia still deoiling method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04247284A (en) * | 1991-02-01 | 1992-09-03 | Nkk Corp | Treatment of ammonia liquor |
| CN1054109C (en) * | 1995-07-25 | 2000-07-05 | 核工业北京化工冶金研究院 | method for purifying residual ammonia water in coking process |
| JP4588268B2 (en) * | 2001-08-20 | 2010-11-24 | 新日本製鐵株式会社 | Processing method and processing system for crude coke oven gas |
| CN201458870U (en) * | 2009-06-02 | 2010-05-12 | 殷叶龙 | Coking wastewater treatment device |
| CN101880112A (en) * | 2010-07-06 | 2010-11-10 | 武汉钢铁(集团)公司 | Coking wastewater treatment process |
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