CN203768299U - Thermal insulation system of tar tank - Google Patents
Thermal insulation system of tar tank Download PDFInfo
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- CN203768299U CN203768299U CN201420143596.6U CN201420143596U CN203768299U CN 203768299 U CN203768299 U CN 203768299U CN 201420143596 U CN201420143596 U CN 201420143596U CN 203768299 U CN203768299 U CN 203768299U
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- tar
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Abstract
The utility model discloses a thermal insulation system for a tar tank, which is characterized by comprising a thermal insulation coil pipe wound on a tar storage tank and a wastewater pump for pumping the ammonia stilling wastewater in an ammonia still, wherein the wastewater pump is connected with an ammonia stilling wastewater inlet of a heat exchanger through a first ammonia stilling wastewater conveying pipeline; an ammonia stilling wastewater outlet, a residual ammonia water inlet and a residual ammonia water outlet are also formed in the heat exchanger; the residual ammonia water inlet of the heat exchanger is connected with a water outlet of the residual ammonia water pump through a first residual ammonia water conveying pipeline; a water inlet of the residual ammonia water pump is connected with a residual ammonia water tank through a second residual ammonia water conveying pipeline; the water inlet of the residual ammonia water pump is also connected with a lye tank through a lye conveying pipeline; the residual ammonia water outlet of the heat exchanger is communicated to the ammonia still; the ammonia stilling wastewater outlet of the heat exchanger is connected with one end orifice of the thermal insulation coil pipe; and the other end orifice of the thermal insulation coil pipe is the ammonia stilling wastewater outlet. The thermal insulation system disclosed by the utility model not only reduces the recycling of the waste heat of the ammonia stilling wastewater, but also reduces the consumption of the cooling water of the ammonia stilling wastewater delivery process of the ammonia stilling system.
Description
Technical field
The utility model relates to a kind of tar groove heat-insulation system.
Background technology
Artificial coal tar is the oils product that coal obtains in high temperature carbonization and gasification.The coal charge that packs coke furnace carbonization chamber into, first separates out water, carbonic acid gas and the methane etc. that are adsorbed in coal, and along with the rising of coal charge temperature, coal is decomposed into water, carbonic acid gas etc. containing the many molecular structures of oxygen; When coal seam, temperature reaches 300-550 ℃, and the fracture of coal macromolecule side chain and group occurs, and products therefrom is first degradation production, is also called just tar; A part is by the coal seam at coking chamber center, and a part enters coking chamber headspace through fervid coke layer along furnace wall, and degree of depth thermolysis occurs under the condition of 800-1000 ℃, and products therefrom is secondary degradation production, or is called high temperature tar.Coal tar contained humidity directly affects the distillation stable operation of postorder and service life of equipment etc., can extend dewatering time, causes distillation column system load to strengthen, and increases energy consumption; If directly as production marketing, also can reduce product quality grade, affect the economic benefit of enterprise.Metallurgy industry standard (YB/T5075-2010) has been stipulated the quality standard of coal tar, and its moisture content index requires to be not more than 4%.Coal tar dehydration at present can be divided into predrainage and final dewatering.Predrainage technology generally has heating settled process, super centrifuging, and final dewatering technology has 5 kinds of tube furnace evaporation, dehydration tower method, pressurizing and dehydrating method, reactor evaporation and thin layer evaporations.
Coke oven gas purification recovery process generally (adopts vertical tar ammonia water separator in 10% left and right from the isolated coal tar of ammoniacal liquor separator is moisture, moisture general 6% left and right of isolated coal tar), the isolated tar of tar ammonia water separator is generally first delivered to the standing dehydration of tar vat, detects tar water and 4.0%, is sent to deep processing operation or for sale when following again.In traditional coal tar predrainage technique, most coal chemical enterprises adopt the standing evaporation of traditional heating, in suitable temperature and clarification dehydration in tar tank in the regular hour, for this reason, make tar temperature remain on 85-95 ℃, through more than standing 36h, can make ammoniacal liquor and tar because of density different and separated.Coal tar storage tank has heating serpentine tube along wall, and steam or thermal oil by passing in coiled pipe, make tar remain on 85-95 ℃, and at such temperature, tar is easy to flow most, and is easy to separated with ammoniacal liquor most.Coal chemical enterprise adopts steam to provide insulation thermal source to tar groove absolutely mostly, occurred afterwards utilizing thermal oil to tar groove, to be incubated the heat preserving mode that thermal source is provided, but above two kinds of modes all needs to consume coal gas.For reducing energy consumption, recent years, indivedual local cyclic ammonia waters that adopt were incubated to tar groove, but consider that the cyclic ammonia water overflowing in tar ammonia separator tank is entrained with coal tar, NAPTHALENE FLAKES. (INDUSTRIAL GRADE）, coal ash etc., foreign matter content is higher, very easily causes the insulation of tar groove obstruction to occur and affect dehydration of tar effect phenomenon with coiled pipe; In addition because cyclic ammonia water is higher containing ammonia etc., corrodibility is stronger, easily corrodes coiled pipe and causes string to leak, and affects dehydration of tar efficiency.
What the present invention studied is that a kind of distilled ammonia wastewater waste heat that utilizes is incubated the novel energy-conserving technology of thermal source is provided to tar groove, thereby has realized distilled ammonia wastewater UTILIZATION OF VESIDUAL HEAT IN, has reduced system steam or gas consumption.
Utility model content
The shortcoming existing in order to overcome above-mentioned prior art, the purpose of this utility model is to provide a kind of tar groove heat-insulation system, has utilized the waste heat of distilled ammonia wastewater, has avoided the waste of the energy.
In order to address the above problem, the utility model by the following technical solutions: a kind of tar groove heat-insulation system, is characterized in that: comprise the insulation coiled pipe of winding on tar tank; Also comprise that, for extracting the waste water pump of distilled ammonia wastewater in ammonia still, waste water pump is connected to the distilled ammonia wastewater entrance of interchanger by the first distilled ammonia wastewater transport pipe, described interchanger is also provided with distilled ammonia wastewater outlet, remained ammonia entrance, remained ammonia outlet; The remained ammonia entrance of interchanger is connected with the water outlet of remained ammonia pump by the first remained ammonia transport pipe, the water-in of remained ammonia pump is connected with remained ammonia groove by the second remained ammonia transport pipe, and the water-in of remained ammonia pump is also connected with lye vat by alkali lye transport pipe; The remained ammonia outlet of interchanger is communicated to ammonia still, and the distilled ammonia wastewater outlet of interchanger is connected to one end mouth of pipe of described insulation coiled pipe, and the other end mouth of pipe of insulation coiled pipe is distilled ammonia wastewater outlet.
As further technical scheme: in this tar groove heat-insulation system, described alkali lye transport pipe is provided with a lye pump.
As further technical scheme: in this tar groove heat-insulation system, the outlet of the distilled ammonia wastewater of described insulation coiled pipe is connected to biochemical dark treatment unit by the second distilled ammonia wastewater transport pipe.
As further technical scheme: in this tar groove heat-insulation system, on described the first distilled ammonia wastewater transport pipe, connect a lateral, the other end of lateral is connected to the distilled ammonia wastewater input terminus of reboiler, and the distilled ammonia wastewater steam output end of reboiler is connected to the thermal source input terminus of ammonia still.
The beneficial effects of the utility model are:
(I) take distilled ammonia wastewater as thermal barrier, both realized the recycling of the distilled ammonia wastewater waste heat whole year, reduced again ammonia steaming system and sent the consumption of distilled ammonia wastewater process cooling water outside.
(II), according to ammonia still process ammonia process and tar tank site layout project, transformation process is main need to increase distilled ammonia wastewater pipeline (some valves can be supportingly set), and former ammonia steaming system and tar tank structure are not exerted an influence.
(III) reduced production steam or heating thermal oil gas consumption, saved process cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further:
Fig. 1 is the structure of the utility model embodiment and uses view;
In figure: 1 tar tank, 2 insulation coiled pipes, 21 distilled ammonia wastewater outlets, 3 waste water pumps, 4 first distilled ammonia wastewater transport pipes, 5 interchanger, 6 first remained ammonia transport pipes, 7 remained ammonia pumps, 8 second remained ammonia transport pipes, 9 remained ammonia grooves, 10 alkali lye transport pipes, 11 lye vats, 12 ammonia stills, 13 lye pumps, 14 biochemical dark treatment unit, 15 laterals, 16 reboilers, 161 heat conductive oil inlets, 162 thermal oil outlets, 17 second distilled ammonia wastewater transport pipes, 18 the 3rd distilled ammonia wastewater transport pipes, 19 the 3rd remained ammonia transport pipes.
Embodiment
As shown in Figure 1, this tar groove heat-insulation system, comprises the insulation coiled pipe 2 of winding on tar tank 1; Also comprise for extracting the waste water pump 3 of ammonia still 12 interior distilled ammonia wastewaters, waste water pump 3 is connected to the distilled ammonia wastewater entrance of interchanger 5 by the first distilled ammonia wastewater transport pipe 4, described interchanger 5 is also provided with distilled ammonia wastewater outlet, remained ammonia entrance, remained ammonia outlet; The remained ammonia entrance of interchanger 5 is connected with the water outlet of remained ammonia pump 7 by the first remained ammonia transport pipe 6, the water-in of remained ammonia pump 7 is connected with remained ammonia groove 9 by the second remained ammonia transport pipe 8, and the water-in of remained ammonia pump 7 is also connected with lye vat 11 by alkali lye transport pipe 10; The remained ammonia outlet of interchanger 5 is communicated to ammonia still 12 by the 3rd remained ammonia transport pipe 19, remained ammonia access position is all the laminate place of the middle and upper part of ammonia still, this access position is techniques well known, the position that the vertical remained ammonia in this area accesses while being back to ammonia still.The distilled ammonia wastewater outlet of interchanger 5 is connected to one end mouth of pipe of described insulation coiled pipe 2 by the second distilled ammonia wastewater transport pipe 17, the other end mouth of pipe of insulation coiled pipe 2 is distilled ammonia wastewater outlet 21.
The further technology that this embodiment adopts: in this tar groove heat-insulation system, described alkali lye transport pipe 10 is provided with a lye pump 13.
The further technology that this embodiment adopts: in this tar groove heat-insulation system, the outlet 21 of the distilled ammonia wastewater of described insulation coiled pipe 2 is connected to biochemical dark treatment unit 14 by the second distilled ammonia wastewater transport pipe 8.
The further technology that this embodiment adopts: in this tar groove heat-insulation system, on described the first distilled ammonia wastewater transport pipe 4, connect a lateral 15, the other end of lateral 15 is connected to the distilled ammonia wastewater input terminus of reboiler 16, and the distilled ammonia wastewater steam output end of reboiler 16 is connected to the thermal source input terminus of ammonia still 12.The structure of reboiler itself is prior art, has also expressed heat conductive oil inlet 161, the thermal oil outlet 162 of reboiler 16 in Fig. 1.The inner order of reboiler is arranged a large amount of tubules, and the high temperature heat conductive oil that extraneous tube furnace is sent here enters each tubule, and distilled ammonia wastewater is outside each tubule; After distilled ammonia wastewater thermal conversion being steam with thermal oil, at the bottom of returning to ammonia still tower, for ammonia still distillation provides thermal source; Thermal oil after heat exchange returns to tube furnace circulating-heating and uses.The distilled ammonia wastewater steam of reboiler output, can be used as distilled ammonia wastewater and again circulates as thermal source after ammonia still.
Distilled ammonia wastewater is extracted out from ammonia still 12 bottoms by waste water pump 3, in interchanger 5, carry out after heat exchange with the remained ammonia that enters ammonia still 12, the distilled ammonia wastewater of about 90-95 ℃ is delivered to tar tank 1 by the second distilled ammonia wastewater transport pipe 17, the second distilled ammonia wastewater transport pipe 17 is connected with the import of the insulation coiled pipe 2 of tar tank, by distilled ammonia wastewater pump discharge pressure, realize distilled ammonia wastewater at tar tank insulation coiled pipe 2 internal recycle, distilled ammonia wastewater after heat exchange exports 21 out from the distilled ammonia wastewater of insulation coiled pipe, then by the 3rd distilled ammonia wastewater transport pipe 18, delivering to biochemical dark treatment unit 14 further processes.
Reboiler 16 wherein, the concrete structure of interchanger 5 are prior art, and Fig. 1 has also expressed the ammonia of ammonia still 12 outputs in prior art, the ammoniacal liquor of backflow.
Except above-mentioned technology, all the other technology are same prior art all.
Claims (4)
1. a tar groove heat-insulation system, is characterized in that: comprise the insulation coiled pipe of winding on tar tank; Also comprise that, for extracting the waste water pump of distilled ammonia wastewater in ammonia still, waste water pump is connected to the distilled ammonia wastewater entrance of interchanger by the first distilled ammonia wastewater transport pipe, described interchanger is also provided with distilled ammonia wastewater outlet, remained ammonia entrance, remained ammonia outlet; The remained ammonia entrance of interchanger is connected with the water outlet of remained ammonia pump by the first remained ammonia transport pipe, the water-in of remained ammonia pump is connected with remained ammonia groove by the second remained ammonia transport pipe, and the water-in of remained ammonia pump is also connected with lye vat by alkali lye transport pipe; The remained ammonia outlet of interchanger is communicated to ammonia still, and the distilled ammonia wastewater outlet of interchanger is connected to one end mouth of pipe of described insulation coiled pipe, and the other end mouth of pipe of insulation coiled pipe is distilled ammonia wastewater outlet.
2. a kind of tar groove heat-insulation system according to claim 1, is characterized in that: described alkali lye transport pipe is provided with a lye pump.
3. a kind of tar groove heat-insulation system according to claim 1 and 2, is characterized in that: the distilled ammonia wastewater outlet of described insulation coiled pipe is connected to biochemical dark treatment unit by the second distilled ammonia wastewater transport pipe.
4. a kind of tar groove heat-insulation system according to claim 3, it is characterized in that: on described the first distilled ammonia wastewater transport pipe, connect a lateral, the other end of lateral is connected to the distilled ammonia wastewater input terminus of reboiler, and the distilled ammonia wastewater steam output end of reboiler is connected to the thermal source input terminus of ammonia still.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143596.6U CN203768299U (en) | 2014-03-27 | 2014-03-27 | Thermal insulation system of tar tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143596.6U CN203768299U (en) | 2014-03-27 | 2014-03-27 | Thermal insulation system of tar tank |
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| Publication Number | Publication Date |
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| CN203768299U true CN203768299U (en) | 2014-08-13 |
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| CN201420143596.6U Expired - Fee Related CN203768299U (en) | 2014-03-27 | 2014-03-27 | Thermal insulation system of tar tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671305A (en) * | 2015-02-11 | 2015-06-03 | 上海安赐机械设备有限公司 | Residual ammonia liquid treatment apparatus and technology |
-
2014
- 2014-03-27 CN CN201420143596.6U patent/CN203768299U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671305A (en) * | 2015-02-11 | 2015-06-03 | 上海安赐机械设备有限公司 | Residual ammonia liquid treatment apparatus and technology |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20170327 |