CN204572091U - Formaldehyde cogeneration unit - Google Patents
Formaldehyde cogeneration unit Download PDFInfo
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- CN204572091U CN204572091U CN201520165233.7U CN201520165233U CN204572091U CN 204572091 U CN204572091 U CN 204572091U CN 201520165233 U CN201520165233 U CN 201520165233U CN 204572091 U CN204572091 U CN 204572091U
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- formaldehyde
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- formaldehyde liquid
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The utility model discloses a kind of formaldehyde cogeneration unit; Formaldehyde method for power generation by waste heat, comprises the following steps: the high temperature formaldehyde liquid of 75 ~ 85 DEG C is introduced the hot-side channel of vaporizer, to carry out heat exchange with the working medium flowing through cooling channel in vaporizer by (1); (2), after heat exchange, in vaporizer, hot-side channel outlet side exports the low temperature formaldehyde liquid of 60 ~ 70 DEG C to absorption tower, carries out circulation temperature lowering process, until reach technological requirement; In vaporizer, cooling channel outlet side then exports high-pressure working medium to the working medium passage of turbine engine and produces mechanical energy, and to drive electrical power generators, produces electric energy.Therefore: by 75 ~ 85 DEG C of formaldehyde liquid middle-low grade thermal power transfer are become electric energy, reach saving power, improve the object that residual heat resources maximize the low-carbon (LC) production recycling, realize formaldehyde.
Description
Technical field
The utility model relates to a kind of formaldehyde cogeneration unit, belongs to formaldehyde liquid cogeneration technology.
Background technique
At chemical field, silver-colored formaldehyde is produced and is widely used catalyst for electrolytic silver as methanol oxidation dehydrogenation chemical reaction generation formaldehyde, and entering the Diversity material before reactor has ternary gas and quaternary gas two kinds.Ternary gas is air, methyl alcohol, water vapor three kinds of gases; Quaternary gas is air, add partial tail gas again in methyl alcohol, water vapor becomes four kinds of gas componants, also claims circulation of tail gas method; Described silver-colored formaldehyde production technology comprises the steps: ternary gas or quaternary gas, oxidation reactor is entered after heating mixing, under the effect of high temperature 650 DEG C of catalyzer, methanol oxidation dehydrogenation chemical reaction generates formaldehyde gas, then to be added water Physical Absorption by absorption tower, repeatedly inhaled at absorption tower flyback water by pipeline mounted pump circulation temperature lowering, reach required liquid formaldehyde concentration 37-55%.Absorption tower arranges plural serial stage, and liquid is the formalin sucking higher temperature through recycle pump at the bottom of tower, is exported and is transported to tower top epimere again, spray from top to bottom by condenser cooling.Section at the bottom of tower is suitable for reading enters gas componant, flows from bottom to top, absorbs with the water close contact sprayed, and unabsorbed gases is exported by tower top and enters next stage absorption tower again.
Above-mentioned principle is utilized to produce the method for formaldehyde in the existing 58 years history of China.In production, must enter the first bottom, absorption tower from oxidation reactor gas out, after heat exchange cools, enter tower top again by sucking-off at the bottom of tower and spray and fall, so circulation is called as cyclic absorption technique.
It is exothermic reaction that methanol oxidation dehydrogenation chemical reaction generates formaldehyde, the formaldehyde gas temperature generated is at 110 ~ 190 DEG C, enter the first absorption tower to be recycled liquid and to have lowered the temperature a part, but also need the end temperature that could control a tower after being cooled further by heat exchange in 55 ~ 85 DEG C, this process for cooling principle is used till today always.
Known by above-mentioned analysis: traditional formaldehyde process for cooling Problems existing is, waste a large amount of low grade heat energies, again consume a large amount of electric energy be used for cooling.
Summary of the invention
The utility model is for the deficiencies in the prior art, a kind of formaldehyde method for power generation by waste heat and generator set thereof are provided, by 75 ~ 85 DEG C of formaldehyde liquid middle-low grade thermal power transfer are become electric energy, reach saving power, improve the object that residual heat resources maximize the low-carbon (LC) production recycling, realize formaldehyde.
For realizing above technical purpose, the utility model will take following technological scheme: a kind of formaldehyde cogeneration unit, comprises vaporizer, turbine engine, alternator and cooler; The hot-side channel entrance of described vaporizer is connected with the formaldehyde liquid input pipeline of 75 ~ 85 DEG C, and the hot-side channel outlet of vaporizer is then connected with corresponding absorption tower, and the temperature of the hot-side channel outlet port formaldehyde liquid of vaporizer is 60 ~ 70 DEG C; The hot-side channel of described vaporizer cold side channel and the working medium passage of turbine engine, cooler joins end to end successively, and the cold side channel of vaporizer cold side channel, cooler has refrigerant to flow through respectively, the pto＝power take-off of turbine engine is then connected with the power input shaft of alternator.
As further improvement of the utility model, described formaldehyde liquid input pipeline has two covers, inputs high temperature formaldehyde liquid A, high temperature formaldehyde liquid B respectively; Vaporizer is organic Rankine vaporizer; High temperature formaldehyde liquid A, high temperature formaldehyde liquid B, respectively by respective formaldehyde liquid input pipeline, access in the horizontal-type evaporator tubulation of organic Rankine vaporizer independently of each other.
As further improvement of the utility model, described formaldehyde liquid input pipeline has two covers, inputs high temperature formaldehyde liquid A, high temperature formaldehyde liquid B respectively; Vaporizer is that two plate-type exchanger combinations are formed; High temperature formaldehyde liquid A, high temperature formaldehyde liquid B, respectively by respective formaldehyde liquid input pipeline, enter the hot-side channel of corresponding plate-type exchanger, and are connected with the working medium feeder connection of turbine engine after the cold side channel of two plate-type exchangers outlet parallel connection.
According to above technological scheme, relative to prior art, the utility model has following advantage: the utility model utilizes the higher formaldehyde liquid of the temperature on the first absorption tower section first to carry out thermo-electric generation, and then send back to the first top, absorption tower, utilize formaldehyde cogeneration unit to sponge part formaldehyde heat energy instead of cooling equipment; The utility model is applied to Formaldehyde Production economize on electricity more than 60%, and the formaldehyde plants producing 50000 tons, two cover per year are equipped with the formaldehyde cogeneration unit of 310kw, year gross generation 2,116,800kwh.Tradition formaldehyde technique often produces 1 ton of 37% concentration formaldehyde, power consumption 26 ~ 30kwh/t.The generation technology that the utility model provides, often produce 1 ton of 37% concentration formaldehyde, can generate electricity 18 ~ 23kwh, amounts to CO
2reduce discharging 5.9 ~ 7.5kg (1kg marks coal and amounts to generating 3.06kwh), formaldehyde low-carbon (LC) can be realized and produce.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model patent is further illustrated.
Fig. 1 is the structural representation forming the utility model formaldehyde cogeneration unit.
In figure: 1. organic Rankine vaporizer, 2. turbine engine, 3. alternator, 4. cooler, 5. formaldehyde liquid pipeline mounted pump A, 6. formaldehyde liquid pipeline mounted pump B, 7. refrigerant medium pump, 8. cooling waterpump.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further.Following embodiment should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model.It should be noted that, these accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Embodiment 1
As shown in Figure 1, it discloses a kind of specific embodiment of formaldehyde cogeneration unit described in the utility model.Known according to figure: the formaldehyde cogeneration unit described in the present embodiment, comprises two cover formaldehyde liquid input pipelines, two formaldehyde liquid pipeline mounted pumps, a vaporizer, a turbine engine, a generator, cooler, a working medium pump;
Two cover formaldehyde liquid input pipelines, are respectively used to the formaldehyde liquid A of conveying 75 ~ 85 DEG C, formaldehyde liquid B;
Two formaldehyde liquid pipeline mounted pumps, are arranged on aforesaid two cover formaldehyde liquid input pipelines, for formaldehyde liquid A, the formaldehyde liquid B of pumping 75 ~ 85 DEG C respectively;
Vaporizer, the present embodiment adopts organic Rankine vaporizer; In organic Rankine vaporizer, the walking of high temperature formalin is in horizontal-type evaporator tubulation, independently can access the formalin of two cover formaldehyde production devices.Working substance steam walking after exchange is outside horizontal-type evaporator tubulation.The input output end socket of horizontal-type evaporator is built-in with seal isolation plate, ensures that the formalin medium of two cover formaldehyde production devices is independent of each other;
Turbine engine, inputs the working substance steam outside organic Rankine vaporizer horizontal-type evaporator tubulation in working medium passage; Pto＝power take-off is then connected with the power input shaft of generator;
Cooler, flows through refrigerant in cold side channel, and in the present embodiment, refrigerant is cooling water, and in hot-side channel, entrance is connected with the working medium channel outlet of turbine engine, and outlet is then connected with the cold side channel of vaporizer by working medium pump; Thus, recycling of working medium is completed.
Working principle:
High temperature 75 ~ 85 DEG C of formaldehyde liquid A and B from the two cover formaldehyde plants in workshop enter organic Rankine vaporizer 1 entry end through formaldehyde pipeline pump 5 and 6 respectively, and organic Rankine evaporator outlet end low temperature 60 ~ 70 DEG C of formaldehyde liquid cause corresponding top, absorption tower respectively.Organic Rankine vaporizer tubulation outer working medium expanded by heating generation high pressure steam enters twin-screw turbine engine 2 and does work, working medium after pressure release is sent back to vaporizer by working medium pump 7, beginning cycling hot dilation again expanded by heating reciprocally enters turbine engine, and the generator that the live axle of turbine engine 2 connects produces high-speed rotary then output power.
Improve the inlet port pressure difference of twin-screw turbine engine 2, equal to improve turbine engine working efficiency.In accompanying drawing after the outlet working medium of turbine engine have passed through cooler 4, then be transmitted back in vaporizer 1 by working medium pump 7 pressurization.
In accompanying drawing, in empty frame, flow process is formaldehyde cogeneration unit of the present utility model, and cooling waterpump 8, formaldehyde pipeline pump 5,6 are original standard manufacturing equipment in workshop.
The utility model is applied to Formaldehyde Production economize on electricity more than 60%, and the formaldehyde plants producing 50000 tons, two cover per year are equipped with the formaldehyde cogeneration unit of 310kw, year gross generation 2,116,800kwh.Tradition formaldehyde technique often produces 1 ton of 37% concentration formaldehyde, power consumption 26 ~ 30kwh/t.The generation technology that the utility model provides, often produce 1 ton of 37% concentration formaldehyde, can generate electricity 18 ~ 23kwh, amounts to CO2 and reduce discharging 5.9 ~ 7.5kg (1kg marks coal and amounts to generating 3.06kwh), can realize formaldehyde low-carbon (LC) and produce.
Implement 2
The present embodiment is substantially identical with the technological scheme of embodiment 1, just in this enforcement, have employed the vaporizer of different structure form, that is: vaporizer is that two plate-type exchanger combinations are formed; High temperature formaldehyde liquid A, high temperature formaldehyde liquid B, respectively by respective formaldehyde liquid input pipeline, enter the hot-side channel of corresponding plate-type exchanger, and are connected with the working medium feeder connection of turbine engine after the cold side channel of two plate-type exchangers outlet parallel connection.
In addition, in the utility model, the formaldehyde liquid of 75 ~ 85 DEG C of introducing is not limited to two covers, and select two covers, mainly consider that its heat is tow taste heat, single channel formaldehyde liquid may not meet the work requirements of turbine engine; And increase by a road again, and whole vaporizer volume will be caused to increase, comparatively heavy.
Tow taste heat in the formaldehyde liquid of 75 ~ 85 DEG C, relative to prior art, can be used by the utility model, produces electric energy, to reach the object of energy saving by generating; Avoiding in prior art, for cooling the formaldehyde liquid of 75 ~ 85 DEG C, and needing to use extra energy; Namely the utility model all reaches energy-conservation object from two aspects.Mainly utilize the temperature difference to absorb heat to generate electricity, effectively utilize the low grade heat energy of 75 ~ 85 DEG C of formaldehyde liquid, saving power, raising residual heat resources maximize recycling, realize the production of the low-carbon (LC) of formaldehyde.Formaldehyde cogeneration unit of the present utility model can be applied in simultaneously in a workshop two cover formaldehyde production devices, floor space is little, space availability ratio and Utilization ratio high, the turnover is short.The utility model is applied to formaldehyde production cogeneration, often produces one ton of formaldehyde liquid and can to generate electricity 18 ~ 23kwh.
Technological means disclosed in the utility model scheme is not limited only to the technological means disclosed in above-mentioned technological means, also comprises the technological scheme be made up of above technical characteristics combination in any.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (3)
1. a formaldehyde cogeneration unit, is characterized in that, comprises vaporizer, turbine engine, alternator and cooler; The hot-side channel entrance of described vaporizer is connected with the formaldehyde liquid input pipeline of 75 ~ 85 DEG C, and the hot-side channel outlet of vaporizer is then connected with corresponding absorption tower, and the temperature of the hot-side channel outlet port formaldehyde liquid of vaporizer is 60 ~ 70 DEG C; The hot-side channel of described vaporizer cold side channel and the working medium passage of turbine engine, cooler joins end to end successively, and the cold side channel of vaporizer cold side channel, cooler has refrigerant to flow through respectively, the pto＝power take-off of turbine engine is then connected with the power input shaft of alternator.
2. formaldehyde cogeneration unit according to claim 1, is characterized in that, described formaldehyde liquid input pipeline has two covers, inputs high temperature formaldehyde liquid A, high temperature formaldehyde liquid B respectively; Vaporizer is organic Rankine vaporizer; High temperature formaldehyde liquid A, high temperature formaldehyde liquid B, respectively by respective formaldehyde liquid input pipeline, access in the horizontal-type evaporator tubulation of organic Rankine vaporizer independently of each other.
3. formaldehyde cogeneration unit according to claim 1, is characterized in that, described formaldehyde liquid input pipeline has two covers, inputs high temperature formaldehyde liquid A, high temperature formaldehyde liquid B respectively; Vaporizer is that two plate-type exchanger combinations are formed; High temperature formaldehyde liquid A, high temperature formaldehyde liquid B, respectively by respective formaldehyde liquid input pipeline, enter the hot-side channel of corresponding plate-type exchanger, and are connected with the working medium feeder connection of turbine engine after the cold side channel of two plate-type exchangers outlet parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520165233.7U CN204572091U (en) | 2015-03-24 | 2015-03-24 | Formaldehyde cogeneration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520165233.7U CN204572091U (en) | 2015-03-24 | 2015-03-24 | Formaldehyde cogeneration unit |
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| Publication Number | Publication Date |
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| CN204572091U true CN204572091U (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520165233.7U Expired - Fee Related CN204572091U (en) | 2015-03-24 | 2015-03-24 | Formaldehyde cogeneration unit |
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| Country | Link |
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| CN (1) | CN204572091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135702A (en) * | 2015-09-18 | 2015-12-09 | 中石化南京工程有限公司 | Oxidation liquid heat recycling device and method |
-
2015
- 2015-03-24 CN CN201520165233.7U patent/CN204572091U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135702A (en) * | 2015-09-18 | 2015-12-09 | 中石化南京工程有限公司 | Oxidation liquid heat recycling device and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20180324 |