CN203823741U - Steam condensate heat recovery device for concentrated nitric acid production - Google Patents
Steam condensate heat recovery device for concentrated nitric acid production Download PDFInfo
- Publication number
- CN203823741U CN203823741U CN201420192462.3U CN201420192462U CN203823741U CN 203823741 U CN203823741 U CN 203823741U CN 201420192462 U CN201420192462 U CN 201420192462U CN 203823741 U CN203823741 U CN 203823741U
- Authority
- CN
- China
- Prior art keywords
- high temperature
- steam
- recovery device
- nitric acid
- condensed water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 229910017604 nitric acid Inorganic materials 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 109
- 239000007788 liquid Substances 0.000 claims description 15
- 230000008676 import Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000004064 recycling Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a steam condensate heat recovery device for concentrated nitric acid production, and belongs to the field of heat recovery devices. The steam condensate heat recovery device comprises a condensate expansion tank, a high-temperature hot water pump, a boiler water supply preheater, a steam pocket and a water replenishing pump, wherein the water replenishing pump is connected with the condensate expansion tank and the high-temperature hot water pump through pipelines and fittings respectively; the high-temperature hot water pump is connected with the boiler water supply preheater through a pipeline and fittings; the boiler water supply preheater is connected with the steam pocket through a pipeline and fittings. According to the steam condensate heat recovery device adopting the technical scheme, the steam condensate heat utilization efficiency can be improved, the resource waste can be reduced, and the automatic continuous operation of a recycling device can be performed.
Description
Technical field
The utility model belongs to heat-energy recovering apparatus field, specifically, relates in particular to a kind of heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA).
Background technology
In Chemical Manufacture, especially the steam condensate (SC) heat energy recovery rate in red fuming nitric acid (RFNA) production is lower, cause the significant wastage of heat energy and water resource, the main cause that causes this phenomenon is that the open equipment recovery of normal pressure or the high-temperature pump pressurized delivered modes of adopting reclaim more in recovery system, as adopted condensate draining etc.This way of recycling makes flash distillation cooling loss serious, and matter energy loss is larger, and the system of this recycling easily exists the pumping problem of cavitation of high-temperature condensation water, often makes recycling system not run well.
Summary of the invention
For addressing the above problem, the utility model provides a kind of heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA), and it can improve the utilization efficiency of heat energy of steam condensate (SC), reduces the wasting of resources, realizes the automatic continuous operation of recycle device.
The heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA) described in the utility model, comprise condensed water expansion slot, high temperature hot water pump, boiler water supply preheater, drum, small pump, described small pump is connected with condensed water expansion slot, high temperature hot water pump respectively by pipeline and accessory, described high temperature hot water pump is connected with boiler water supply preheater by pipeline and accessory, and boiler water supply preheater is connected with drum by pipeline and accessory.
Say further, the condensed water expansion slot described in the utility model is provided with the import of middle pressure steam condensed water, secondary low-voltage steam (vapor) outlet, drain and condensation-water drain, and described condensation-water drain is connected with small pump, high temperature hot water pump by pipeline and accessory.
Say further, the drum described in the utility model is provided with dum boiler for water inlet, middle pressure steam outlet, and described dum boiler is connected with boiler water supply preheater by pipeline and accessory for water inlet.
Say further, the middle pressure steam condensed water import described in the utility model and drain are positioned at the top of condensed water expansion slot, and secondary low-voltage steam (vapor) outlet is positioned at the top of condensed water expansion slot.
Say further, the high temperature hot water pump described in the utility model adopts high temperature resistant material, and its porch is provided with anti cavitation device.
Say further, on the condensed water expansion slot described in the utility model, be provided with liquid-level auto-control device, described drum is provided with control valve.Liquid-level auto-control device adopts liquid level gauge, and liquid level gauge is provided with lower bound and height is limit, and is connected control respectively with small pump, control valve.
Say further, on the condensed water expansion slot described in the utility model, be provided with liquid-level auto-control device.
Compared with prior art, the utlity model has following beneficial effect:
1, it is high that the open equipment recovery of normal pressure that the utility model is relative and traditional or high-temperature pump pressurized delivered mode have heat energy recovery rate, the advantage that energy waste is few;
2, the utility model can be realized the Automatic continuous operation of condensed water heat energy recycling system, and its high temperature hot water pump adopts high temperature resistant material, and porch is through anti-cavitation processing.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
In figure: 1, condensed water expansion slot; 2, high temperature hot water pump; 3, boiler water supply preheater; 4, drum; 5, small pump; 6, middle pressure steam condensed water import; 7, secondary low-voltage steam (vapor) outlet; 8, drain; 9, condensation-water drain; 10, dum boiler is for water inlet; 11, middle pressure steam outlet.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment 1: the heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA) described in the utility model, comprise condensed water expansion slot 1, high temperature hot water pump 2, boiler water supply preheater 3, drum 4, small pump 5, described small pump 5 is connected with condensed water expansion slot 1, high temperature hot water pump 2 respectively by pipeline and accessory, described high temperature hot water pump 2 is by pipeline and accessory and boiler water supply preheater 3, and boiler water supply preheater 3 is connected with drum 4 by pipeline and accessory.
Embodiment 2: the heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA) described in the utility model, comprise condensed water expansion slot 1, high temperature hot water pump 2, boiler water supply preheater 3, drum 4, small pump 5, described small pump 5 is connected with condensed water expansion slot 1, high temperature hot water pump 2 respectively by pipeline and accessory, described high temperature hot water pump 2 is by pipeline and accessory and boiler water supply preheater 3, and boiler water supply preheater 3 is connected with drum 4 by pipeline and accessory; Described condensed water expansion slot 1 is provided with middle pressure steam condensed water import 6, secondary low-voltage steam (vapor) outlet 7, drain 8 and condensation-water drain 9, the import 6 of described middle pressure steam condensed water and drain 8 are positioned at the top of condensed water expansion slot 1, secondary low-voltage steam (vapor) outlet 7 is positioned at the top of condensed water expansion slot 1, and described condensation-water drain 9 is connected with small pump 5, high temperature hot water pump 2 by pipeline and accessory; Described drum 4 is provided with dum boiler for water inlet 10, middle pressure steam outlet 11, described dum boiler is connected with boiler water supply preheater 3 by pipeline and accessory for water inlet 10, wherein said high temperature hot water pump 2 adopts high temperature resistant material, and its porch is provided with anti cavitation device; On described condensed water expansion slot 1, be provided with liquid-level auto-control device, on described drum 4, be also provided with the control valve that can automatically regulate drum 4 interior water levels.
The utility model in use, be 0.85-0.9Mpa from the pressure in Used in Concentrated Nitrogen Acid Workshop Section nitre magnesium evaporimeter and nitre magnesium heater, the middle pressure steam condensed water that temperature is approximately 175 DEG C, enter into enclosed condensed water expansion slot 1, in condensed water expansion slot 1, after flash distillation, produce the secondary low-voltage steam that pressure is 0.6-0.7Mpa, through exporting 7 discharges, enter low-pressure steam pipe network, for other steam plant, the condensed water after separation, by exporting 9 discharges, enters into high temperature hot water pump 2 through pipeline and accessory.
On condensed water expansion slot 1, be provided with liquid-level auto-control device, this liquid-level auto-control device is chain with small pump 5, control valve respectively, liquid-level auto-control device can adopt liquid level gauge, and be provided with high limit and lower bound, when liquid level is during lower than lower bound (lower bound is made as 50%), small pump 5 starts automatically to start the entrance moisturizing to high temperature hot water pump 2.In the time that liquid level is limit (high limit can be set to 80%) higher than height, control valve is opened from trend boiler soft water and is connected case water supply.For preventing that high temperature hot water pump 2 from cavitation phenomenons occurring, install the device that prevents cavitation additional at the entrance of high temperature hot water pump 2, the boiling point that the water under high pressure that utilizes pump self to export carries out secondary injection pressurization raising water prevents cavitation, the entrance condensed water pressure of high temperature hot water pump 2 is 0.4-0.5Mpa, temperature 120-130 DEG C, its outlet condensed water pressure reaches 1.8-2.0Mpa, temperature 150-160 DEG C; Enter boiler water supply preheater 3, after preheating, outlet temperature reaches 180 DEG C again, goes drum 4 to supply water as waste heat boiler, and drum 4 is provided with tank level control system, automatically controls drum maintain certain liquid level with control valve.Drum 4 in the utility model per hour can by-product the 1.2Mpa middle pressure steam of 12 tons.
Claims (7)
1. a heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA), it is characterized in that: comprise condensed water expansion slot (1), high temperature hot water pump (2), boiler water supply preheater (3), drum (4), small pump (5), described small pump (5) is connected with condensed water expansion slot (1), high temperature hot water pump (2) respectively by pipeline and accessory, described high temperature hot water pump (2) is connected with boiler water supply preheater (3) by pipeline and accessory, and boiler water supply preheater (3) is connected with drum (4) by pipeline and accessory.
2. the heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA) according to claim 1, it is characterized in that: described condensed water expansion slot (1) is provided with middle pressure steam condensed water import (6), secondary low-voltage steam (vapor) outlet (7), drain (8) and condensation-water drain (9), described condensation-water drain (9) is connected with small pump (5), high temperature hot water pump (2) by pipeline and accessory.
3. the heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA) according to claim 2, it is characterized in that: described drum (4) is provided with dum boiler for water inlet (10), middle pressure steam outlet (11), and described dum boiler is connected with boiler water supply preheater (3) by pipeline and accessory for water inlet (10).
4. the heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA) according to claim 3, it is characterized in that: described middle pressure steam condensed water import (6) and drain (8) are positioned at the top of condensed water expansion slot (1), and secondary low-voltage steam (vapor) outlet (7) is positioned at the top of condensed water expansion slot (1).
5. the heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA) according to claim 4, is characterized in that: described high temperature hot water pump (2) adopts high temperature resistant material, and its porch is provided with anti cavitation device.
6. the heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA) according to claim 5, is characterized in that: on described condensed water expansion slot (1), be provided with liquid-level auto-control device, described drum (4) is provided with control valve.
7. according to the heat energy recovery device of steam condensate of producing for red fuming nitric acid (RFNA) described in claim 1 or 2 or 3, it is characterized in that: on described condensed water expansion slot (1), be provided with liquid-level auto-control device; Described drum (4) is provided with control valve; Described high temperature hot water pump (2) adopts high temperature resistant material, and its porch is provided with anti cavitation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420192462.3U CN203823741U (en) | 2014-04-18 | 2014-04-18 | Steam condensate heat recovery device for concentrated nitric acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420192462.3U CN203823741U (en) | 2014-04-18 | 2014-04-18 | Steam condensate heat recovery device for concentrated nitric acid production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203823741U true CN203823741U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420192462.3U Expired - Fee Related CN203823741U (en) | 2014-04-18 | 2014-04-18 | Steam condensate heat recovery device for concentrated nitric acid production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203823741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595066A (en) * | 2015-10-14 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Concentrated niter discharge hot water recycling system |
-
2014
- 2014-04-18 CN CN201420192462.3U patent/CN203823741U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595066A (en) * | 2015-10-14 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Concentrated niter discharge hot water recycling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |