CN103868132B - A kind of copper work low grade residual heat recovery system for concentrated supply of heating in the city - Google Patents

A kind of copper work low grade residual heat recovery system for concentrated supply of heating in the city Download PDF

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Publication number
CN103868132B
CN103868132B CN201410128289.5A CN201410128289A CN103868132B CN 103868132 B CN103868132 B CN 103868132B CN 201410128289 A CN201410128289 A CN 201410128289A CN 103868132 B CN103868132 B CN 103868132B
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water
waste
heat
heat recovery
heat exchanger
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CN103868132A (en
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夏建军
方豪
宿颖波
于峰
江亿
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Chifeng Ran Energy Polytron Technologies Inc
Tsinghua University
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Chifeng Ran Energy Polytron Technologies Inc
Tsinghua University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12Hot water central heating systems using heat pumps
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Abstract

The present invention relates to a kind of copper work low grade residual heat recovery system for concentrated supply of heating in the city, it is characterised in that: it includes waste-heat recovery device in a secondary net circulating pump and copper work;A secondary net backwater from a pipe network flows into waste-heat recovery device in described copper work by a described secondary net circulating pump, the form that in waste-heat recovery device collects copper work in described copper work, a waste heat secondary net backwater after heating one secondary net backwater, temperature rising supplies water with a secondary net is supplied to user;Steam afterheat recovery device in waste-heat recovery device includes the stove furnace wall difficult to understand waste-heat recovery device, converter body waste-heat recovery device and the drying tower waste-heat recovery device that are arranged in parallel and absorption tower waste-heat recovery device, slag pond waste-heat recovery device and the copper work connected with above-mentioned three kinds of waste-heat recovery devices in parallel in described copper work.The present invention can be widely applied to during low grade residual heat reclaims in copper work.

Description

A kind of copper work low grade residual heat recovery system for concentrated supply of heating in the city
Technical field
The present invention relates to a kind of residual neat recovering system, low-grade especially with regard to a kind of copper work for concentrated supply of heating in the city Residual neat recovering system.
Background technology
Along with the propelling at full speed of Urbanization Process In China, the scale of concentrated supply of heating in the city constantly expands, and causes central heating The deficiency of thermal source capacity.Newly-built regional boiler room investment height, the construction period is long, and is restricted by environmental carrying capacity; In view of the demand to Air Pollution Control, small gas boiler room also can only treatment in accordance with local conditions development;In conjunction with combustion gas, electricity The present situation of power production and supply, most cities is also not suitable for using the mode of combustion gas or electric power to carry out central heating. Heat source is in short supply has become as in the central heating of cities of Northern China problem demanding prompt solution.
" copper smelting by pyrometallurgy ", as the Copper making technique of a kind of maturation, is the main method of world today's production copper.Not During disconnected production practices, the middle high-grade (mainly more than 200 DEG C) produced for " copper smelting by pyrometallurgy " technique Waste heat have been carried out effectively utilizing, improve the heat utilization efficiency of this technique primary energy, outlet of still flue gas such as difficult to understand Waste heat boiler, acid-making process conversion section sulfur trioxide fume afterheat utilization etc..But it is limited to technique itself, it is less than The waste heat of 200 DEG C, the low grade residual heat of especially less than 100 DEG C is directly thrown into air only as used heat so that copper The primary energy heat utilization efficiency of smelting process is low (typically less than 40%).The low grade residual heat master that Copper making technique produces Including: the stove furnace wall difficult to understand waste heat in smelting process, converter body waste heat;More than slag pond near fire grate cinder notch difficult to understand Heat;Absorption tower waste heat in acid-making process, dry acid waste heat etc..These low grade residual heats pass through cooling water evaporation mostly And scatter and disappear at cooling tower, not only expending electric power is used for driving blower fan of cooling tower to rotate, and consumes a large amount of cooling more in vain Water.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of can significantly improve primary energy heat utilization efficiency for The copper work low grade residual heat recovery system of concentrated supply of heating in the city, heat conventional with coal-burning boiler system, co-generation unit etc. The heating system of source form is compared, and the waste heat using the present invention to reclaim can be at the base the most additionally consuming primary energy There is provided heat for central heating system on plinth, thus effectively alleviate the situation that concentrated supply of heating in the city thermal source is in short supply.
For achieving the above object, the present invention takes techniques below scheme: the low product in a kind of copper work for concentrated supply of heating in the city Position residual neat recovering system, it is characterised in that: it includes waste-heat recovery device in a secondary net circulating pump and copper work;From one One secondary net backwater of secondary pipe network is by waste-heat recovery device, described copper work in a described described copper work of secondary net circulating pump inflow In interior waste-heat recovery device collects copper work, waste heat is used for heating one secondary net backwater, and the secondary net backwater after heat absorption intensification is with one The form that secondary net supplies water is supplied to user.
In described copper work waste-heat recovery device include stove furnace wall difficult to understand waste-heat recovery device, converter body waste-heat recovery device, In drying tower waste-heat recovery device, absorption tower waste-heat recovery device, slag pond waste-heat recovery device and copper work more than steam Heat reclamation device;Described stove furnace wall difficult to understand waste-heat recovery device, converter body waste-heat recovery device and drying tower waste heat recovery After device parallel connection the most successively with steam in described absorption tower waste-heat recovery device, slag pond waste-heat recovery device and copper work Waste-heat recovery device is connected.
Described stove furnace wall difficult to understand waste-heat recovery device includes inlet adjustment valve, water-water heat exchanger, outlet regulating valve, cooling tower Top waterpipe valve, cooling tower, pond of cooling tower pipeline valve, cooling water circulating pump and stove furnace wall difficult to understand;Described entrance Regulation valve is arranged on the first arrival end of described water-water heat exchanger, and described outlet regulating valve is arranged on described water-water heat exchange First port of export of device;Second port of export of described water-water heat exchanger passes through pipeline and described cooling tower top waterpipe valve Access in described cooling tower, and be connected with the pond of described cooling tower by pipeline and described pond of cooling tower pipeline valve, The pond of described cooling tower is connected with the arrival end of described stove furnace wall difficult to understand by pipeline and described cooling water circulating pump, described The port of export of stove furnace wall difficult to understand is connected with the second arrival end of described water-water heat exchanger.
Described drying tower waste-heat recovery device includes inlet adjustment valve, water-water heat exchanger, outlet regulating valve, cooling tower top Waterpipe valve, cooling tower, pond of cooling tower pipeline valve, cooling water circulating pump, acid-water-to-water heat exchanger, drying tower and Acid pump;Described inlet adjustment valve is arranged on the first arrival end of described water-water heat exchanger, and described outlet regulating valve is arranged on First port of export of described water-water heat exchanger;Second port of export of described water-water heat exchanger passes through pipeline and described cooling Overhead water pipeline valve accesses in described cooling tower, and cold with described by pipeline and described pond of cooling tower pipeline valve But the pond of tower connects, and the pond of described cooling tower is by pipeline and described cooling water circulating pump and described acid-water-to-water heat exchanger The first arrival end connect, first port of export of described acid-water-to-water heat exchanger and the second arrival end of described water-water heat exchanger Connecting, second port of export of described acid-water-to-water heat exchanger is connected with the arrival end of described drying tower, the outlet of described drying tower Hold and be connected with the second arrival end of acid-water-to-water heat exchanger by described acid pump.
Described absorption tower waste-heat recovery device includes inlet adjustment valve, water-water heat exchanger, outlet regulating valve, cooling tower top Waterpipe valve, cooling tower, pond of cooling tower pipeline valve, cooling water circulating pump, acid-water-to-water heat exchanger, absorption tower and Acid pump;Described inlet adjustment valve is arranged on the first arrival end of described water-water heat exchanger, and described outlet regulating valve is arranged on First port of export of described water-water heat exchanger;Second port of export of described water-water heat exchanger passes through pipeline and described cooling Overhead water pipeline valve accesses in described cooling tower, and cold with described by pipeline and described pond of cooling tower pipeline valve But the pond of tower connects, and the pond of described cooling tower is by pipeline and described cooling water circulating pump and described acid-water-to-water heat exchanger The first arrival end connect, first port of export of described acid-water-to-water heat exchanger and the second arrival end of described water-water heat exchanger Connecting, second port of export of described acid-water-to-water heat exchanger is connected with the arrival end on described absorption tower, the outlet on described absorption tower Hold and be connected with the second arrival end of acid-water-to-water heat exchanger by described acid pump.
Described slag pond waste-heat recovery device includes inlet adjustment valve, slag water-water heat exchanger, outlet regulating valve, cooling Water-circulating pump and slag pond;Described inlet adjustment valve is arranged on the first arrival end of described slag water-water heat exchanger, described Outlet regulating valve is arranged on first port of export of described slag water-water heat exchanger;Second outlet of described slag water-water heat exchanger End is connected by the arrival end of described cooling water circulating pump with slag pond, the port of export in described slag pond and described slag Second arrival end of water-water heat exchanger connects.
In described copper work, steam afterheat recovery device includes inlet adjustment valve, vapour water-water heat exchanger, outlet regulating valve;Institute State inlet adjustment valve and be arranged on the arrival end of described vapour water-water heat exchanger, described outlet regulating valve be arranged on described soda pop- The port of export of water-to-water heat exchanger;The secondary net backwater flowed out from described slag pond waste-heat recovery device is by pipeline and described Inlet adjustment valve flows in described vapour water-water heat exchanger, and in absorbing copper work in described vapour water-water heat exchanger, steam heats up Afterwards by steam afterheat recovery device in pipeline and the described copper work of described outlet regulating valve outflow;Steam heat release fall in copper work After temperature, the form with solidifying water flows out described vapour water-water heat exchanger.
In described copper work waste-heat recovery device include stove furnace wall difficult to understand waste-heat recovery device, converter body waste-heat recovery device, In drying tower waste-heat recovery device, absorption tower waste-heat recovery device, slag pond waste-heat recovery device and copper work more than steam Heat reclamation device;Described absorption tower waste-heat recovery device and described stove furnace wall difficult to understand waste-heat recovery device, converter body waste heat Retracting device and drying tower waste-heat recovery device parallel-connection structure series connection after, more successively with described slag pond waste heat recovery Steam afterheat recovery device series connection in device and copper work.
The water of described stove furnace wall difficult to understand waste-heat recovery device, converter body waste-heat recovery device and drying tower waste-heat recovery device- One secondary net backwater side of water-to-water heat exchanger is all connected with an absorption heat pump;Described absorption heat pump includes that absorption heat pump absorbs Device, absorption heat pump condenser, absorption heat pump vaporizer and absorption heat pump generator;More than described stove furnace wall difficult to understand In heat reclamation device, converter body waste-heat recovery device and drying tower waste-heat recovery device, the company of described absorption heat pump Connecing mode identical, it is particularly as follows: described inlet adjustment valve is arranged on the arrival end of described absorption heat pump absorber, institute The port of export stating absorption heat pump absorber connects the arrival end of described absorption heat pump condenser, described absorption heat pump The port of export of condenser connects described outlet regulating valve;First port of export of described water-water heat exchanger connects described absorption The arrival end of evaporator with heat pump, the port of export of described absorption heat pump vaporizer by a demineralized water circulation pump and described water- First arrival end of water-to-water heat exchanger connects, and in copper work, steam enters institute by the arrival end of described absorption heat pump generator State in absorption heat pump, and flow out from the port of export of described absorption heat pump generator with the form of solidifying water after heat release cooling.
It is arranged in parallel bypass pipe at the arrival end of each described inlet adjustment valve with the port of export of described outlet regulating valve, and Described bypass pipe is provided for the valve of waterway switching.
Due to the fact that and take above technical scheme, it has the advantage that 1, due to the fact that waste heat in employing copper work Steam in Nei Aolu furnace wall, copper work, converter body, drying tower, absorption tower, slag pond and copper work collected by retracting device Low grade residual heat, flow into the secondary net backwater in copper work for heating by a secondary net circulating pump, after heat absorption heats up The form that one secondary net backwater supplies water with a secondary net is supplied to user, and therefore the present invention can not consume the most once In the case of the energy, in absorbing copper work, low grade residual heat provides heat for central heating system, thus effectively alleviates city The situation that central heating thermal source is in short supply.2, due to the fact that employing stove furnace wall difficult to understand waste-heat recovery device, converter body waste heat Retracting device and drying tower waste-heat recovery device reclaim relatively low grade residual heat in copper work, use absorption tower waste-heat recovery device With relatively high-grade waste heat in slag pond waste-heat recovery device recovery copper work, in using copper work, steam afterheat recovery device is inhaled Receiving the waste heat close with a secondary net return water temperature, therefore in the copper work of the present invention, waste heat recovery rate is high.3, due to the fact that In employing native copper factory production technology, the water of cooling tower is as low grade residual heat in medium absorption copper work, and the heat that will absorb Passing to a secondary net backwater, the form that the secondary net backwater after heat temperature raising supplies water with a secondary net is supplied to user, therefore The present invention can save industrial water in copper work in a large number in low grade residual heat removal process, reduces blower fan of cooling tower power consumption. 4, due to the fact that in copper work at the port of export of the arrival end of the inlet adjustment valve of waste-heat recovery device and outlet regulating valve Being arranged in parallel bypass pipe, and be provided for the valve of waterway switching on bypass pipe, therefore the present invention ensure that copper work When the significantly underproduction occurs in production, the temperature of each waste heat thermal source is unaffected;And when stop production to overhaul occurs in copper work, one Secondary net backwater can without each waste heat thermal source, thus be avoided occurring to cause each waste heat owing to each waste heat heat source temperature is too low Thermal source takes away the situation of a secondary net backwater heat.Based on above advantage, the present invention is low product in can be widely applied to copper work In the waste heat recovery of position.
Accompanying drawing explanation
Fig. 1 be a secondary net return water temperature relatively low time the present invention structural representation
Fig. 2 be a secondary net return water temperature higher time the present invention structural representation
Fig. 3 be a secondary net return water temperature relatively low time Austria's stove furnace wall waste-heat recovery device structural representation
Fig. 4 be a secondary net return water temperature relatively low time drying tower waste-heat recovery device structural representation
Fig. 5 is the secondary net return water temperature structural representation compared with Gao Shiao stove furnace wall waste-heat recovery device
Fig. 6 be a secondary net return water temperature higher time drying tower waste-heat recovery device structural representation
Fig. 7 is the structural representation of slag pond waste-heat recovery device
Fig. 8 is the structural representation of steam afterheat recovery device in copper work
Detailed description of the invention
With embodiment, the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, copper work of the present invention low grade residual heat recovery system includes secondary net circulating pump 1 and a copper work Interior waste-heat recovery device 2.A secondary net backwater from a pipe network (not shown) passes through a secondary net circulating pump 1 Flow into waste-heat recovery device 2 in copper work, a secondary net circulating pump 1 drag losses in heat exchange water route in balancing copper work. In in copper work, waste-heat recovery device 2 collects copper work, waste heat is for heating a secondary net backwater, and the secondary net after heat absorption heats up is returned The form that water supplies water with a secondary net is supplied to user.
Wherein, in copper work, waste-heat recovery device 2 includes stove furnace wall difficult to understand waste-heat recovery device 21, converter body waste heat recovery Device 22, drying tower waste-heat recovery device 23, absorption tower waste-heat recovery device 24, slag pond waste-heat recovery device 25 and copper work in steam afterheat recovery device 26.Stove furnace wall difficult to understand waste-heat recovery device 21, converter body waste heat recovery dress Put 22 and drying tower waste-heat recovery device 23 parallel connection after return with absorption tower waste-heat recovery device 24, slag pond waste heat again In receiving apparatus 25 and copper work, steam afterheat recovery device 26 is connected.
Embodiment 1: as it is shown in figure 1, a secondary net return water temperature relatively low i.e. below 30 DEG C time, carry out " step heating " Principle, first, the secondary net backwater entering copper work is divided into first strand~a 3rd strand secondary net backwater in parallel, three strand one Secondary net backwater separately flows into more than stove furnace wall difficult to understand waste-heat recovery device 21, converter body waste-heat recovery device 22 and drying tower In heat reclamation device 23;Secondly, three strand of one secondary net backwater respectively with stove furnace wall difficult to understand, converter body and three, drying tower product The thermal source of raw relatively low grade residual heat carries out heat exchange;Again, three strand of one secondary net water converges into one after absorbing relatively low grade residual heat Flow in absorption tower waste-heat recovery device 24, slag pond waste-heat recovery device 25 successively and absorb relatively high-grade waste heat; Finally, the secondary net water flowed out from slag pond waste-heat recovery device 25 passes through steam afterheat recovery device 26 in copper work The heat of more than 0.5MPa mesohigh steam in absorption copper work, and the form supplied water with a secondary net further is supplied to user.
In above-described embodiment 1, as it is shown on figure 3, stove furnace wall difficult to understand waste-heat recovery device 21 include inlet adjustment valve 211, Water-water heat exchanger 212, outlet regulating valve 213, cooling tower top waterpipe valve 214, cooling tower 215, cooling tower water Pond pipeline valve 216, cooling water circulating pump 217 and stove furnace wall 218 difficult to understand.Inlet adjustment valve 211 is arranged on water-water and changes First arrival end of hot device 212, outlet regulating valve 213 is arranged on first port of export of water-water heat exchanger 212.Water- Second port of export of water-to-water heat exchanger 212 accesses in cooling tower 215 by pipeline and cooling tower top waterpipe valve 214, And be connected with the pond of cooling tower 215 by pipeline and pond of cooling tower pipeline valve 216, the pond of cooling tower 215 It is connected with the arrival end of stove furnace wall 218 difficult to understand by pipeline and cooling water circulating pump 217, the port of export of stove furnace wall 218 difficult to understand It is connected with the second arrival end of water-water heat exchanger 212.
During reclaiming smelting process low grade residual heat, a secondary net backwater and cooling water are by water-water heat exchanger 212 Realizing one layer of heat exchange, its concrete heat transfer process is: first strand of one secondary net backwater is flowed by pipeline and inlet adjustment valve 211 Entering water-water heat exchanger 212, the cooling water in cooling tower 215 pond is delivered to stove furnace wall difficult to understand by cooling water circulating pump 217 218, cooling water absorbs in stove furnace wall 218 difficult to understand and flows into water-water heat exchanger 212 after waste heat heats up, a secondary net backwater and Absorbing the cooling water after waste heat heats up and carry out heat exchange in water-water heat exchanger 212, a secondary net backwater absorbs the heat of cooling water Stove furnace wall difficult to understand waste-heat recovery device 21 is flowed out by pipeline and outlet regulating valve 213 after amount;Cooling water after cooling returns Cooling tower 215.If the heat of cooling water is all absorbed by a secondary net backwater in water-water heat exchanger 212, then close Cooling tower top waterpipe valve 214, opens pond of cooling tower pipeline valve 216, and cooling water needs not move through cooling tower 215 cool down and flow directly into the pond of cooling tower 215;If the heat of cooling water is the most complete in water-water heat exchanger 212 Portion is absorbed by a secondary net backwater, opens cooling overhead water pipeline valve 214 and pond of cooling tower pipeline valve 216 the most simultaneously, And regulate cooling tower top waterpipe valve 214 and the aperture of pond of cooling tower pipeline valve 216 so that part cooling water Entering in cooling tower 215 and cool down, part cooling water cools down without cooling tower 215 and is directly entered cooling tower 215 Pond, adjust through cooling tower 215 cooling the water yield, it is ensured that waste heat heat is all by secondary net backwater and a cooling tower 215 take away, thus ensure the safety of copper work production technology.It addition, for preventing freeze in winter, cooling tower top waterpipe valve Door 214 remains certain aperture, it is ensured that have a small amount of hot water by and do not produce frost.
In above-described embodiment 1, converter body waste-heat recovery device 22 is similar with stove furnace wall difficult to understand waste-heat recovery device 21, Difference is: the waste heat thermal source in converter body waste-heat recovery device 22 is converter body, and second strand of one secondary net is returned Water absorbs the waste heat of converter body in converter body waste-heat recovery device 22.
In above-described embodiment 1, as shown in Figure 4, drying tower waste-heat recovery device 23 and stove furnace wall difficult to understand waste-heat recovery device 21 are similar to, including inlet adjustment valve 211, water-water heat exchanger 212, outlet regulating valve 213, cooling tower top waterpipe Valve 214, cooling tower 215, pond of cooling tower pipeline valve 216 and cooling water circulating pump 217;Difference is: Drying tower waste-heat recovery device 23 also includes acid-water-to-water heat exchanger 231, drying tower 232 and acid pump 233.Inlet adjustment valve 211 the first arrival ends being arranged on water-water heat exchanger 212, outlet regulating valve 213 is arranged on water-water heat exchanger 212 First port of export.Second port of export of water-water heat exchanger 212 passes through pipeline and cooling tower top waterpipe valve 214 Access in cooling tower 215, and be connected with the pond of cooling tower 215 by pipeline and pond of cooling tower pipeline valve 216, The pond of cooling tower 215 is connected with the first arrival end of acid-water-to-water heat exchanger 231 by pipeline and cooling water circulating pump 217, First port of export of acid-water-to-water heat exchanger 231 is connected with the second arrival end of water-water heat exchanger 212, acid-water-to-water heat exchanger Second port of export of 231 is connected with the arrival end of drying tower 232, the port of export of drying tower 232 by acid pump 233 with Second arrival end of acid-water-to-water heat exchanger 231 connects.
During reclaiming acid-making process low grade residual heat, a secondary net backwater and cooling water are by water-water heat exchanger 212 Realizing two-layer heat exchange with acid-water-to-water heat exchanger 231, its concrete heat transfer process is: one in the 3rd strand of one secondary net backwater leads to Piping and inlet adjustment valve 211 flow into water-water heat exchanger 212, and cooling water circulating pump 217 is by cooling tower 215 pond In cooling water be delivered to acid-water-to-water heat exchanger 231, cool down water absorption dehydration tower 232 in acid-water-to-water heat exchanger 231 Waste heat flows into the cooling water after water-water heat exchanger 212, a secondary net backwater and absorption waste heat heat up and changes at water-water after heating up Carrying out heat exchange in hot device 212, a secondary net backwater is flowed by pipeline and outlet regulating valve 213 after absorbing the heat cooling down water Go out drying tower waste-heat recovery device 23;Cooling water after cooling returns cooling tower 215.If cooling water heat water- Water-to-water heat exchanger 212 is all absorbed by a secondary net backwater, then closes cooling tower top waterpipe valve 214, open cooling Tower pond pipeline valve 216, cooling water needs not move through cooling tower 215 and cools down and flow directly into the water of cooling tower 215 Pond;If the heat of cooling water is the most all absorbed by a secondary net backwater in water-water heat exchanger 212, then open cold while But overhead water pipeline valve 214 and pond of cooling tower pipeline valve 216, and regulate cooling tower top waterpipe valve 214 Aperture with pond of cooling tower pipeline valve 216 so that part cooling water enters in cooling tower 215 and cools down, portion Divide cooling water to cool down without cooling tower 215 and be directly entered the pond of cooling tower 215, adjust through cooling tower 215 The water yield of cooling, it is ensured that waste heat heat is all taken away by a secondary net backwater and cooling tower 215, thus ensures that copper work produces The safety of technique.
In above-described embodiment 1, absorption tower waste-heat recovery device 24 is similar with drying tower waste-heat recovery device 23, different Part is: the waste heat thermal source of absorption tower waste-heat recovery device 24 is absorption tower, and absorption tower waste-heat recovery device 24 is used In the waste heat reclaiming absorption tower.
Embodiment 2: one secondary net return water temperature is higher i.e. more than 30 DEG C, when particularly about 45 DEG C, as in figure 2 it is shown, Carry out " step heating " principle.First, the secondary net backwater entering copper work flows into absorption tower waste-heat recovery device 24 In, after relatively high-grade waste heat heats up in absorption absorption tower, it is divided into first strand~a 3rd strand secondary net backwater in parallel;Its Secondary, three strand of one secondary net backwater separately flows into stove furnace wall difficult to understand waste-heat recovery device 21, converter body waste-heat recovery device 22 With in drying tower waste-heat recovery device 23, absorb what stove furnace wall 218 difficult to understand, converter body and drying tower 232 produced respectively Relatively low grade residual heat also heats up;Again, three strand of one secondary net water after absorbing relatively low grade residual heat and heating up converges into a plume Entering in slag pond waste-heat recovery device 25, in absorption furnace pulp water pond waste-heat recovery device 25, slag pond produces relatively High-grade waste heat;Finally, the secondary net water flowed out from slag pond waste-heat recovery device 25 passes through steam waste heat in copper work Retracting device 26 absorbs the heat of more than 0.5MPa mesohigh steam in copper work, and the shape supplied water with a secondary net further Formula is supplied to user.
In above-described embodiment 2, as shown in Figure 5, Figure 6, due to stove furnace wall 218 difficult to understand, converter body and drying tower 232 Waste heat grade relatively low, it is therefore desirable in stove furnace wall difficult to understand waste-heat recovery device shown in Fig. 3 21, converter body waste heat recovery One secondary net backwater side of the water-water heat exchanger 212 of drying tower waste-heat recovery device 23 shown in device 22 and Fig. 4 is all connected with One absorption heat pump 219.Wherein, absorption heat pump 219 includes absorption heat pump absorber 2191, absorption heat pump Condenser 2192, absorption heat pump vaporizer 2193 and absorption heat pump generator 2194.In stove furnace wall difficult to understand, waste heat returns In receiving apparatus 21, converter body waste-heat recovery device 22 and drying tower waste-heat recovery device 23, absorption heat pump 219 Connected mode identical, it is particularly as follows: inlet adjustment valve 211 is arranged on the arrival end of absorption heat pump absorber 2191, The port of export of absorption heat pump absorber 2191 connects the arrival end of absorption heat pump condenser 2192, absorption heat pump The port of export connection outlet regulation valve 213 of condenser 2192.First port of export of water-water heat exchanger 212 connects absorption The arrival end of formula evaporator with heat pump 2193, the port of export of absorption heat pump vaporizer 2193 passes through a demineralized water circulation pump 220 It is connected with the first arrival end of water-water heat exchanger 212, steam entering by absorption heat pump generator 2194 in copper work Mouthful end enters in absorption heat pump 219, and after heat release cooling with the form of solidifying water from absorption heat pump generator 2194 The port of export flow out.
In the various embodiments described above, as it is shown in fig. 7, slag pond waste-heat recovery device 25 include inlet adjustment valve 211, Slag water-water heat exchanger 251, outlet regulating valve 213, cooling water circulating pump 217 and slag pond 252.Entrance regulates Valve 211 is arranged on the first arrival end of slag water-water heat exchanger 251, and outlet regulating valve 213 is arranged on pulp water-water heat exchange First port of export of device 251.Second port of export of slag water-water heat exchanger 251 passes through cooling water circulating pump 217 and slag The arrival end in pond 252 connects, and the port of export in slag pond 252 connects with the second arrival end of slag water-water heat exchanger 251 Connect.
The secondary net backwater flowed out from absorption tower waste-heat recovery device 24 flows into slag by pipeline and inlet adjustment valve 211 In water-water heat exchanger 251, the slag water in slag water-water heat exchanger 251 flows into slag by cooling water circulating pump 217 Pond 252, the waste heat in slag water absorption furnace pulp water pond 252 flows into slag water-water heat exchanger 251 after heating up, and a secondary net is returned Slag water after water and absorption waste heat heat up carries out heat exchange in slag water-water heat exchanger 251, and a secondary net backwater absorbs slag Slag pond waste-heat recovery device 25 is flowed out by pipeline and outlet regulating valve 213 after the heat of water.
In the various embodiments described above, as shown in Figure 8, in copper work steam afterheat recovery device 26 include inlet adjustment valve 211, Vapour water-water heat exchanger 261, outlet regulating valve 213.Inlet adjustment valve 211 is arranged on entering of vapour water-water heat exchanger 261 Mouth end, outlet regulating valve 213 is arranged on the port of export of vapour water-water heat exchanger 261.From slag pond waste-heat recovery device The 25 secondary net backwater flowed out flow in vapour water-water heat exchanger 261 by pipeline and inlet adjustment valve 211, soda pop- Absorbing in water-to-water heat exchanger 261 flows out in copper work more than steam by pipeline and outlet regulating valve 213 after steam heats up in copper work Heat reclamation device 26.With the form outflow vapour water-water heat exchanger 261 of solidifying water after steam heat release cooling in copper work.
In the various embodiments described above, as shown in Fig. 3~Fig. 8, in arrival end and the outlet regulating of each inlet adjustment valve 211 It is arranged in parallel bypass pipe 27 at the port of export of valve 213, and on bypass pipe 27, is provided for the valve 28 of waterway switching, So can ensure that when the significantly underproduction occurs in copper work production, the water of a secondary net backwater of minimizing and each waste heat thermal source heat exchange Amount, it is ensured that the temperature of each waste heat thermal source is unaffected;And when stop production to overhaul occurs in copper work, a secondary net backwater can not Through each waste heat thermal source, thus avoid occurring to cause each waste heat thermal source to take away a secondary net owing to each waste heat heat source temperature is too low The situation of backwater heat.
The various embodiments described above are merely to illustrate the present invention, and the structure of the most each parts and connected mode etc. are all can be Change, every equivalents carried out on the basis of technical solution of the present invention and improvement, the most should not get rid of at this Outside bright protection domain.

Claims (8)

1. the copper work low grade residual heat recovery system for concentrated supply of heating in the city, it is characterised in that: it includes once Waste-heat recovery device in net circulating pump and copper work;From a secondary net backwater of a pipe network by a described secondary net circulating pump Flowing into waste-heat recovery device in described copper work, in described copper work, waste-heat recovery device collects copper work, waste heat is for heating one Secondary net backwater, the form that the secondary net backwater after heat absorption intensification supplies water with a secondary net is supplied to user;
In described copper work waste-heat recovery device include stove furnace wall difficult to understand waste-heat recovery device, converter body waste-heat recovery device, In drying tower waste-heat recovery device, absorption tower waste-heat recovery device, slag pond waste-heat recovery device and copper work more than steam Heat reclamation device;Described stove furnace wall difficult to understand waste-heat recovery device, converter body waste-heat recovery device and drying tower waste heat recovery After device parallel connection the most successively with steam in described absorption tower waste-heat recovery device, slag pond waste-heat recovery device and copper work Waste-heat recovery device is connected;
Described stove furnace wall difficult to understand waste-heat recovery device includes inlet adjustment valve, water-water heat exchanger, outlet regulating valve, cooling tower Top waterpipe valve, cooling tower, pond of cooling tower pipeline valve, cooling water circulating pump and stove furnace wall difficult to understand;Described entrance Regulation valve is arranged on the first arrival end of described water-water heat exchanger, and described outlet regulating valve is arranged on described water-water heat exchange First port of export of device;Second port of export of described water-water heat exchanger passes through pipeline and described cooling tower top waterpipe valve Access in described cooling tower, and be connected with the pond of described cooling tower by pipeline and described pond of cooling tower pipeline valve, The pond of described cooling tower is connected with the arrival end of described stove furnace wall difficult to understand by pipeline and described cooling water circulating pump, described The port of export of stove furnace wall difficult to understand is connected with the second arrival end of described water-water heat exchanger.
A kind of copper work low grade residual heat recovery system for concentrated supply of heating in the city, it is special Levy and be: described drying tower waste-heat recovery device includes inlet adjustment valve, water-water heat exchanger, outlet regulating valve, cooling Overhead water pipeline valve, cooling tower, pond of cooling tower pipeline valve, cooling water circulating pump, acid-water-to-water heat exchanger, be dried Tower and acid pump;Described inlet adjustment valve is arranged on the first arrival end of described water-water heat exchanger, and described outlet regulating valve sets Put first port of export at described water-water heat exchanger;Second port of export of described water-water heat exchanger is by pipeline and described Cooling tower top waterpipe valve accesses in described cooling tower, and by pipeline and described pond of cooling tower pipeline valve and institute The pond stating cooling tower connects, and the pond of described cooling tower is changed with described acid-water by pipeline and described cooling water circulating pump First arrival end of hot device connects, and first port of export of described acid-water-to-water heat exchanger enters with the second of described water-water heat exchanger Mouth end connects, and second port of export of described acid-water-to-water heat exchanger is connected with the arrival end of described drying tower, described drying tower The port of export is connected with the second arrival end of acid-water-to-water heat exchanger by described acid pump.
A kind of copper work low grade residual heat recovery system for concentrated supply of heating in the city, it is special Levy and be: described absorption tower waste-heat recovery device includes inlet adjustment valve, water-water heat exchanger, outlet regulating valve, cooling Overhead water pipeline valve, cooling tower, pond of cooling tower pipeline valve, cooling water circulating pump, acid-water-to-water heat exchanger, absorption Tower and acid pump;Described inlet adjustment valve is arranged on the first arrival end of described water-water heat exchanger, and described outlet regulating valve sets Put first port of export at described water-water heat exchanger;Second port of export of described water-water heat exchanger is by pipeline and described Cooling tower top waterpipe valve accesses in described cooling tower, and by pipeline and described pond of cooling tower pipeline valve and institute The pond stating cooling tower connects, and the pond of described cooling tower is changed with described acid-water by pipeline and described cooling water circulating pump First arrival end of hot device connects, and first port of export of described acid-water-to-water heat exchanger enters with the second of described water-water heat exchanger Mouth end connects, and second port of export of described acid-water-to-water heat exchanger is connected with the arrival end on described absorption tower, described absorption tower The port of export is connected with the second arrival end of acid-water-to-water heat exchanger by described acid pump.
4. a kind of copper work low grade residual heat for concentrated supply of heating in the city as described in claim 1 or 2 or 3 reclaims system System, it is characterised in that: described slag pond waste-heat recovery device includes inlet adjustment valve, slag water-water heat exchanger, outlet Regulation valve, cooling water circulating pump and slag pond;Described inlet adjustment valve is arranged on the first of described slag water-water heat exchanger Arrival end, described outlet regulating valve is arranged on first port of export of described slag water-water heat exchanger;Described pulp water-water heat exchange Second port of export of device is connected with the arrival end in slag pond by described cooling water circulating pump, going out of described slag pond Mouth end is connected with the second arrival end of described slag water-water heat exchanger.
5. a kind of copper work low grade residual heat for concentrated supply of heating in the city as described in claim 1 or 2 or 3 reclaims system System, it is characterised in that: in described copper work, steam afterheat recovery device includes inlet adjustment valve, vapour water-water heat exchanger, goes out Mouth regulation valve;Described inlet adjustment valve is arranged on the arrival end of described vapour water-water heat exchanger, and described outlet regulating valve is arranged The port of export at described vapour water-water heat exchanger;The secondary net backwater flowed out from described slag pond waste-heat recovery device passes through Pipeline and described inlet adjustment valve flow in described vapour water-water heat exchanger, absorb copper work in described vapour water-water heat exchanger Interior steam passes through pipeline after heating up and described outlet regulating valve flows out steam afterheat recovery device in described copper work;In copper work After steam heat release cooling, the form with solidifying water flows out described vapour water-water heat exchanger.
6. the copper work low grade residual heat recovery system for concentrated supply of heating in the city, it is characterised in that: it includes once Waste-heat recovery device in net circulating pump and copper work;From a secondary net backwater of a pipe network by a described secondary net circulating pump Flowing into waste-heat recovery device in described copper work, in described copper work, waste-heat recovery device collects copper work, waste heat is for heating one Secondary net backwater, the form that the secondary net backwater after heat absorption intensification supplies water with a secondary net is supplied to user;
In described copper work waste-heat recovery device include stove furnace wall difficult to understand waste-heat recovery device, converter body waste-heat recovery device, In drying tower waste-heat recovery device, absorption tower waste-heat recovery device, slag pond waste-heat recovery device and copper work more than steam Heat reclamation device;Described absorption tower waste-heat recovery device and described stove furnace wall difficult to understand waste-heat recovery device, converter body waste heat Retracting device and drying tower waste-heat recovery device parallel-connection structure series connection after, more successively with described slag pond waste heat recovery Steam afterheat recovery device series connection in device and copper work;
Described stove furnace wall difficult to understand waste-heat recovery device includes inlet adjustment valve, water-water heat exchanger, outlet regulating valve, cooling tower Top waterpipe valve, cooling tower, pond of cooling tower pipeline valve, cooling water circulating pump and stove furnace wall difficult to understand;Described entrance Regulation valve is arranged on the first arrival end of described water-water heat exchanger, and described outlet regulating valve is arranged on described water-water heat exchange First port of export of device;Second port of export of described water-water heat exchanger passes through pipeline and described cooling tower top waterpipe valve Access in described cooling tower, and be connected with the pond of described cooling tower by pipeline and described pond of cooling tower pipeline valve, The pond of described cooling tower is connected with the arrival end of described stove furnace wall difficult to understand by pipeline and described cooling water circulating pump, described The port of export of stove furnace wall difficult to understand is connected with the second arrival end of described water-water heat exchanger.
A kind of copper work low grade residual heat recovery system for concentrated supply of heating in the city, it is special Levy and be: described stove furnace wall difficult to understand waste-heat recovery device, converter body waste-heat recovery device and drying tower waste-heat recovery device A secondary net backwater side of water-water heat exchanger be all connected with an absorption heat pump;Described absorption heat pump includes absorption heat pump Absorber, absorption heat pump condenser, absorption heat pump vaporizer and absorption heat pump generator;At described stove stove difficult to understand In wall waste-heat recovery device, converter body waste-heat recovery device and drying tower waste-heat recovery device, described absorption heat pump Connected mode identical, it is particularly as follows: described inlet adjustment valve is arranged on the arrival end of described absorption heat pump absorber, The port of export of described absorption heat pump absorber connects the arrival end of described absorption heat pump condenser, described absorption type heat The port of export of pump condenser connects described outlet regulating valve;First port of export of described water-water heat exchanger connects described absorption The arrival end of formula evaporator with heat pump, the port of export of described absorption heat pump vaporizer by a demineralized water circulation pump and described water- First arrival end of water-to-water heat exchanger connects, and in copper work, steam enters institute by the arrival end of described absorption heat pump generator State in absorption heat pump, and flow out from the port of export of described absorption heat pump generator with the form of solidifying water after heat release cooling.
8. a kind of copper work low grade residual heat recovery system for concentrated supply of heating in the city as described in claim 1 or 7, It is characterized in that: at the arrival end of each described inlet adjustment valve with the port of export of described outlet regulating valve, be arranged in parallel side Siphunculus, and on described bypass pipe, it is provided for the valve of waterway switching.
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