CN212404295U - Large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability - Google Patents
Large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability Download PDFInfo
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- CN212404295U CN212404295U CN202020446776.7U CN202020446776U CN212404295U CN 212404295 U CN212404295 U CN 212404295U CN 202020446776 U CN202020446776 U CN 202020446776U CN 212404295 U CN212404295 U CN 212404295U
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Abstract
The utility model relates to a large-scale electrolytic water hydrogen manufacturing system with wide power fluctuation adaptability, this system includes: the water electrolysis hydrogen production module comprises: a plurality of the sensors are arranged to form a parallel form; a system power split controller: the power distribution and control device is configured to be used for power distribution and control of the water electrolysis hydrogen production module in the water electrolysis hydrogen production system; each water electrolysis hydrogen production module comprises a plurality of water electrolysis hydrogen production modules with different power levels and a module power shunt controller, the module power shunt controller is configured to be used for power shunt control of the water electrolysis hydrogen production modules in the module, the module power shunt controller is connected to the system power shunt controller, and the water electrolysis hydrogen production modules in the water electrolysis hydrogen production modules share a module manager used for temperature, alkali liquor circulation and gas-liquid separation control and a hydrogen purification assembly used for hydrogen purification. Compared with the prior art, the utility model discloses can promote hydrogen manufacturing energy consumption efficiency and wide power fluctuation adaptability, reinforcing instantaneous response speed reduces power loading cost.
Description
Technical Field
The utility model relates to a hydrogen production system by water electrolysis, in particular to a large hydrogen production system by water electrolysis with wide power fluctuation adaptability.
Background
Under the complex backgrounds of deep adjustment of world energy pattern, acceleration of actions for global coping with climate change and continuous strengthening of resource and environment constraints, hydrogen energy is considered to be one of the major strategic directions of world energy and power transformation, and is concerned by countries in the world. The development of the hydrogen energy industry is accelerated, the five-in-one strategic layout is implemented, and the method is a strategic selection for China to deal with global climate change, practice the strategy of developing the Yangtze river economic zone, guarantee the national energy supply safety and realize sustainable development. The source of hydrogen is an important issue for the development of hydrogen energy at present, and hydrogen is still used as an industrial raw material gas at present, so that the hydrogen has rich application in chemical industry, and from the source, three mature technical routes are mainly provided; firstly, hydrogen is produced by reforming fossil energy; secondly, hydrogen is produced as a by-product in industry; thirdly, electrolyzing water to produce hydrogen. The raw materials for hydrogen production by reforming fossil energy are mainly coal, so that the cost is low, the technology is mature, but the large-scale green hydrogen production of the technology is limited by the unavoidable emission of carbon dioxide and the use of fossil energy. The industrial by-product hydrogen mainly comes from industries such as coke, chlor-alkali, synthetic ammonia, propane dehydrogenation and the like, and can provide a low-cost hydrogen source for the early development of the hydrogen energy industry. The hydrogen production by water electrolysis is green and environment-friendly, flexible in production and high in purity, and if the hydrogen production is matched with renewable energy sources for power generation and large-scale utilization of waste electricity, the cost can be remarkably reduced, and the method has extremely high commercialization potential and is the most promising method for preparing hydrogen energy. In the process of hydrogen production by water electrolysis, the most mature technical route at present is an alkaline water electrolysis technology.
Through the literature search of the prior art, the research of the current large-scale electrolytic water system mostly focuses on the development and optimization of the electrolytic water equipment so as to realize the purposes of integration of the electrolytic water equipment, cost reduction, purification of product gas and the like, such as:
chinese patent CN 104911626A: the device is simple in structure and convenient to install, greatly reduces the cost of the rubber mat by using the ethylene propylene diene rubber mat, can be used repeatedly, not only can directly convey high-pressure hydrogen and oxygen under a high-pressure state, reduces the link of gas pressurization, and further reduces the cost.
Chinese patent CN 1920100: the method for continuously purifying the water electrolysis hydrogen provides a method for continuously purifying the water electrolysis hydrogen by periodically and continuously drying by using a 3-drying tower, not only can continuously obtain high-purity product hydrogen, but also can realize no waste of the hydrogen, greatly improves the economic benefit and is beneficial to protecting the atmospheric environment.
Chinese patent CN 205442733U: the modular electrolysis device is provided with a base, an electrolysis device and an upper cover, and the water electrolysis device is modularized and can be suitable for different water treatment devices.
Chinese patent CN 106148989A: the electric energy storage system comprises a power supply system, a water electrolysis device and a gas storage device, and the method for generating hydrogen and oxygen is characterized in that residual electric energy is used for generating hydrogen and oxygen through the water electrolysis device, and storing the electric energy.
Chinese patent CN 1041130084A: the method for controlling the wind power-hydrogen production grid-connected power generation system provides a wind turbine generator model based on a double-fed induction generator, establishes an electrolyzed water hydrogen production equipment model and controls the grid-connected power generation system.
Although the existing related researches mention that a plurality of water electrolysis hydrogen production devices are used in the same system, the modular integration of a single water electrolysis device is not considered, the wide power fluctuation adaptability system framework of large-scale water electrolysis hydrogen production is lacked, and the optimization method of the wide power fluctuation adaptability of the large-scale water electrolysis hydrogen production system is lacked.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability.
The purpose of the utility model can be realized through the following technical scheme:
a large scale water electrolysis hydrogen production system with wide power fluctuation adaptability, the system comprising:
the water electrolysis hydrogen production module comprises: a plurality of the sensors are arranged to form a parallel form;
a system power split controller: the power distribution and control device is configured to be used for power distribution and control of the water electrolysis hydrogen production module in the water electrolysis hydrogen production system;
each water electrolysis hydrogen production module comprises a plurality of water electrolysis hydrogen production modules with different power grades and a module power shunt controller, the module power shunt controller is configured to be used for power shunt control of the water electrolysis hydrogen production modules in the module, the module power shunt controller is connected to the system power shunt controller, and the water electrolysis hydrogen production modules in the water electrolysis hydrogen production modules share a module manager for temperature, alkali liquor circulation and gas-liquid separation control and a hydrogen purification assembly for hydrogen purification.
The electrolytic water hydrogen production modules with different power levels in the electrolytic water hydrogen production module are respectively provided with a plurality of electrolytic tanks which operate independently, and the electrolytic tanks are connected to a module manager and a hydrogen purification assembly which are shared in the electrolytic water hydrogen production module.
The module manager comprises a rectifier transformer, an oxygen side gas diaphragm valve, an oxygen side gas-liquid separator, a hydrogen side gas diaphragm valve, a hydrogen side gas-liquid separator, an alkali liquid tank, an alkali supplement pump, an alkali liquid filter and an alkali supplement branch, wherein each electrolyzed water hydrogen production module in the same electrolyzed water hydrogen production module is respectively connected to a module power split controller through one rectifier transformer, oxygen output ports of each electrolyzed water hydrogen production module are mutually communicated and connected to the oxygen side gas-liquid separator, a gas output port of the oxygen side gas-liquid separator discharges oxygen through the oxygen side gas diaphragm valve, hydrogen output ports of each electrolyzed water hydrogen production module are mutually communicated and connected to the hydrogen side gas-liquid separator, a gas output port of the hydrogen side gas-liquid separator is connected to the hydrogen purification assembly through the hydrogen side gas diaphragm valve, and alkali liquid output ports of the oxygen side gas-liquid separator and the hydrogen side gas-liquid separator are communicated to one, the input end of the alkali liquor filter is also connected with the alkali liquor tank through the alkali supplementing pump, and the alkali liquor inlets of the electrolyzed water hydrogen production modules are respectively connected with the output end of the alkali liquor filter through an alkali supplementing branch.
The alkali supplementing branch comprises an alkali liquor circulating pump and an alkali liquor cooler which are connected in series, the input end of the alkali liquor circulating pump is connected with the output end of the alkali liquor filter, and the output end of the alkali liquor cooler is connected with the alkali liquor inlet of the corresponding water electrolysis hydrogen production module.
The gas output ends of the hydrogen purification components of all the water electrolysis hydrogen production modules of the system are communicated to form a hydrogen output port of the system.
The communication between the hydrogen output ports of the hydrogen purification assembly is in a form of comprising: bus, star, ring, tree, and mesh.
The system power shunt controller comprises a microprocessor chip.
The module power shunt controller comprises a microprocessor chip.
Compared with the prior art, the utility model has the advantages of as follows:
(1) the utility model discloses a nimble different power level electrolytic water hydrogen manufacturing module's of collocation system framework is favorable to making each electrolytic water hydrogen manufacturing equipment all be in near best operating point under the undulant condition of wide power, consequently can promote large-scale electrolytic water hydrogen manufacturing energy consumption efficiency under each input operating mode, promotes the undulant adaptability of wide power of electrolytic water hydrogen manufacturing system by a wide margin.
(2) The utility model discloses a system logic of launching arbitrary quantity electrolytic water hydrogen manufacturing module in a flexible way, it always has some electrolytic water hydrogen manufacturing equipment to be in operating condition in the assurance system, consequently can respond different power supply demands sooner, can increase fast or reduce hydrogen manufacturing power, has strengthened the adaptability and the response speed of system.
(3) The utility model discloses an independent brineelectrolysis hydrogen manufacturing module makes each module all be in the operating power interval at the during operation, consequently can guarantee each auxiliary assembly's normal work, makes negative and positive pole pressure balance, has promoted the purity of product hydrogen, oxygen, has promoted brineelectrolysis hydrogen manufacturing system's security.
(4) The utility model discloses a system's scheme of same electrolytic water hydrogen manufacturing module sharing module manager, different electrolytic water hydrogen manufacturing modules in guaranteeing same electrolytic water hydrogen manufacturing module are managed by same module manager, can maintain the temperature of all electrolytic water hydrogen manufacturing modules under same electrolytic water hydrogen manufacturing module near operating temperature, consequently guarantee that electrolytic module can quick loading, strengthened electrolytic hydrogen manufacturing system's instantaneous response speed and reduced the power loading cost.
(5) The utility model discloses a gas purification subassembly arrangement mode in the module to gas purification subassembly between each module can adopt connection topological structure such as bus type, star type, loop type, tree type, netted, consequently has improved the purity of output hydrogen under the wide power fluctuation condition, the security of operation and the utilization ratio of system, provides the online authigenic ability of rate purification module simultaneously, has avoided the shut down that regeneration process brought.
(6) The utility model discloses a modularization electrolytic water system arranges, consequently is favorable to electrolysis water hydrogen manufacturing equipment serialization production, is favorable to reduction in production cost, and the maintenance degree of difficulty when can reducing the system trouble simultaneously reduces electrolysis water hydrogen manufacturing equipment trouble cost of maintenance.
Drawings
FIG. 1 is a schematic structural diagram of a large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability of the utility model;
FIG. 2 is a schematic topology diagram of a large scale electrolytic water hydrogen production system with wide power fluctuation adaptability of the present invention;
FIG. 3 is a schematic structural diagram of a module manager in a large-scale electrolytic water hydrogen production system with wide power fluctuation adaptability;
FIG. 4 is a flow chart of the operation of the large-scale electrolytic water hydrogen production system with wide power fluctuation adaptability of the present invention;
fig. 5 is a distribution power fluctuation diagram according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the temperature change after the hydrogen production module by water electrolysis stops working according to the embodiment of the present invention;
FIG. 7 shows the working power of the hydrogen production module by electrolyzing water and the power modules in the embodiment of the present invention in the 1 st embodiment;
FIG. 8 is a graph showing the operating power of the electrolytic water hydrogen production module 2 and the power level modules in the power fluctuation according to the embodiment of the present invention;
FIG. 9 shows the operation power of the 3 rd hydrogen production module by water electrolysis and the power level modules in the embodiment of the present invention during power fluctuation;
FIG. 10 shows the operating power of the 4 th hydrogen production module by water electrolysis and the power level modules therein in power fluctuation according to the embodiment of the present invention;
fig. 11 is a diagram illustrating the operation power of the 5 th hydrogen production module by electrolyzing water and the power level modules therein in power fluctuation according to the embodiment of the present invention.
In the figure, 1 is a system power split controller, 2 is an electrolyzed water hydrogen production module, 3 is a module manager, 4 is a module power split controller, 5 is an I-type electrolyzed water hydrogen production module, 6 is a j-type electrolyzed water hydrogen production module, 7 is a hydrogen purification assembly, 31 is an oxygen side gas diaphragm valve, 32 is a hydrogen side gas diaphragm valve, 33 is an oxygen side gas-liquid separator, 34 is a hydrogen side gas-liquid separator, 35 is an electrolyzed water hydrogen production module, 36 is a rectifier transformer, 37 is an alkali liquor cooler, 38 is an alkali liquor tank, 39 is an alkali supplement pump, 310 is an alkali liquor filter, and 311 is an alkali liquor circulating pump.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Note that the following description of the embodiments is merely an example of the nature, and the present invention is not intended to limit the application or the use thereof, and the present invention is not limited to the following embodiments.
Examples
As shown in fig. 1 and fig. 2, a large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability comprises:
and (3) electrolyzing water to prepare the hydrogen module 2: a plurality of the sensors are arranged to form a parallel form;
system power split controller 1: the power distribution and control device is configured to be used for the power distribution and control of the water electrolysis hydrogen production module 2 in the water electrolysis hydrogen production system;
each water electrolysis hydrogen production module 2 comprises a plurality of water electrolysis hydrogen production modules with different power levels and a module power shunt controller 4, the module power shunt controller 4 is configured to be used for power shunt control of the water electrolysis hydrogen production modules in the module, the module power shunt controller 4 is connected to the system power shunt controller 1, and the water electrolysis hydrogen production modules in each water electrolysis hydrogen production module 2 share a module manager 3 for temperature, alkali liquor circulation and gas-liquid separation control and a hydrogen purification assembly 7 for hydrogen purification. In the embodiment, n water electrolysis hydrogen production modules 2 are arranged, and the ith water electrolysis hydrogen production module 2 comprises m water electrolysis hydrogen production equipment modules with power levels, wherein the rated power is PMi1The I type electrolyzed water hydrogen production module 5 of MW is provided with Xi1Rated power of PMi2Model X of MW II type water electrolysis hydrogen production equipmenti2In this way, the rated power is PMijThe MW j-type water electrolysis hydrogen production equipment module 6 is provided with XijAnd (4) respectively. Obviously to the utility model discloses well electrolysis water hydrogen manufacturing system for its rated power is P, and the unit is MW, has:
for any ith power level electrolytic water hydrogen production module in the above-mentioned ith electrolytic water hydrogen production module 2, due to technical limitation, the lowest power of operation is PMij_minAnd therefore its power p at any instant, in MW, i.e.:
PMij_min≤p≤PMij，
for any water electrolysis hydrogen production equipment, the working temperature of the equipment should be at the minimum working temperature tLFrom DEG C to a maximum temperature tHBetween the temperature and the temperature, when the temperature is too low or too high, the water electrolysis hydrogen production equipment cannot work normally, so the temperature t of any water electrolysis hydrogen production equipment is measured in units of ℃, when the water electrolysis hydrogen production equipment works or needs to enter a working state, the following should be provided:
tL≤t≤tH，
and when the input power of the water electrolysis hydrogen production equipment which normally works is reduced to zero, the cooling system in the auxiliary equipment stops working, the temperature starts to slowly reduce, referring to fig. 5, after cooling lasts for a certain time, the temperature of the hydrogen production equipment is lower than the lowest working temperature, at the moment, the input power is increased, and the water electrolysis hydrogen production module cannot normally work. Therefore, in order to ensure the wide power fluctuation adaptability of the water electrolysis hydrogen production system, each water electrolysis hydrogen production module in each module needs to be kept within the working temperature range through intermittent work and module internal thermal management.
Assuming that the single water electrolysis hydrogen production equipment with the same or similar technical level has the rated power of P MW and the minimum working power of Psingle_minMW, because its technical level with the utility model provides an arbitrary brineelectrolysis hydrogen manufacturing equipment module is equivalent, and rated power is far greater than single brineelectrolysis hydrogen manufacturing equipment module, therefore its minimum power must be greater than arbitrary single brineelectrolysis hydrogen manufacturing equipment module's minimum power PMij_minMW, i.e.:
PMij_min＜Psingle_min，
therefore, compared with the working power interval [ P ] of a system formed by adopting single water electrolysis hydrogen production equipmentsingle_min,P]The large-scale water electrolysis hydrogen production system can start any number of water electrolysis modules and any number of water electrolysis modules in the modules, wherein the minimum working power is MIN (P)Mij_min) MW, working range [ MIN (P) ]Mij_min),P]Therefore, the minimum working power of the large-scale water electrolysis hydrogen production system in the utility model is smaller, namely:
MIN(PMij_min)＜PMij_min，
therefore, the large-scale water electrolysis hydrogen production system of the utility model can obviously improve the wide power fluctuation adaptability.
The electrolyzed water hydrogen production modules with different power levels in the electrolyzed water hydrogen production module 2 are respectively provided with a plurality of electrolytic tanks which run independently, and the electrolytic tanks are connected to a module manager 3 and a hydrogen purification component 7 which are shared in the electrolyzed water hydrogen production module 2.
As shown in fig. 3, a module manager rectifier transformer 36, an oxygen side gas diaphragm valve 31, an oxygen side gas-liquid separator 33, a hydrogen side gas diaphragm valve 32, a hydrogen side gas-liquid separator 34, an alkaline liquid tank 38, an alkaline make-up pump 39, an alkaline liquid filter 310 and an alkaline make-up branch, wherein each electrolyzed water hydrogen production module 35 in the same electrolyzed water hydrogen production module is respectively connected to the module power split controller 4 through a rectifier transformer 36, oxygen output ports of each electrolyzed water hydrogen production module 35 are mutually communicated and connected to the oxygen side gas-liquid separator 33, a gas output port of the oxygen side gas-liquid separator 33 discharges oxygen through the oxygen side gas diaphragm valve 32, hydrogen output ports of each electrolyzed water hydrogen production module 35 are mutually communicated and connected to the hydrogen side gas-liquid separator 34, a gas output port of the hydrogen side gas-liquid separator 34 is connected to the hydrogen purification assembly 7 through the hydrogen side gas diaphragm valve 32, the alkali liquor outlets of the oxygen side gas-liquid separator 33 and the hydrogen side gas-liquid separator 34 are communicated to an alkali liquor filter 310, the input end of the alkali liquor filter 310 is also connected with an alkali liquor tank 38 through an alkali supplementing pump 39, and the alkali liquor inlets of the electrolyzed water hydrogen production modules 35 are respectively connected with the output end of the alkali liquor filter 310 through an alkali supplementing branch. The alkali supplementing branch comprises an alkali liquor circulating pump 311 and an alkali liquor cooler 37 which are connected in series, the input end of the alkali liquor circulating pump 311 is connected with the output end of the alkali liquor filter 310, and the output end of the alkali liquor cooler 37 is connected with the corresponding alkali liquor inlet of the water electrolysis hydrogen production module 35.
During the working process, the alkali liquor respectively flows out from the outlets of the hydrogen side and the oxygen side of the water electrolysis hydrogen production module 35 with various power levels, respectively enters the hydrogen side gas-liquid separator 34 and the oxygen side gas-liquid separator 33, gas and the alkali liquor are separated in the hydrogen side gas-liquid separator 34 and the oxygen side gas-liquid separator 33, and the pressure is adjusted by the hydrogen side gas diaphragm valve 32 and the oxygen side gas diaphragm valve 31. The alkali liquor flows out from the hydrogen side gas-liquid separator 34 and the oxygen side gas-liquid separator 33, enters the alkali liquor filter 310, is filtered to remove impurities which may appear, enters each alkali liquor cooler 37 to be cooled under the action of the alkali liquor circulating pump 311 of each power grade electrolyzed water hydrogen production module, and finally enters each power grade electrolyzed water hydrogen production module 35, and the alkali liquor flow of each module is controlled by the alkali liquor circulating pump 311. The thermal management of the electrolyzed water hydrogen production module 35 with each power level is mainly realized by a gas-liquid separator and an alkali liquor cooler 37, wherein the alkali liquor cooler 37 can accurately control the temperature of the alkali liquor at the outlet of the alkali liquor cooler 37. In vapour and liquid separator, the normal atmospheric temperature deionized water that alkali lye constantly received in the ware sprays to take off the gas that contains, the temperature reduces simultaneously, consequently needs subassembly such as deionized water tank, deionized water pump the utility model discloses in contain in vapour and liquid separator. Alkali lye carries out the heat exchange with the coolant liquid in alkali lye cooler 37 before getting into electrolysis water hydrogen manufacturing module 35 to reduce temperature needs collocation cooling tower, coolant pump to control coolant liquid temperature flow the utility model discloses in contain in alkali lye cooler 37.
The gas output ends of the hydrogen purification components 7 of all the water electrolysis hydrogen production modules 2 of the system are communicated to form a hydrogen output port of the system. The communication between the hydrogen outlets of the hydrogen purification assembly 7 is in the form of: bus, star, ring, tree, and mesh.
The system power-split controller 1 and the module power-split controller 4 include microprocessor chips.
As shown in fig. 4, the specific work flow of the large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability is as follows:
(S1) providing electric energy and current input electric energy according to the history of the power supply system, analyzing power impact possibly encountered by the system by combining the power distribution requirement of a power grid, and calculating the redundant power required at the current moment;
(S2) providing electric energy and current input electric energy according to the history of the power supply system, combining ideal power intervals of various types of water electrolysis hydrogen production equipment in the water electrolysis hydrogen production system, and considering the required redundant power, calculating the number of water electrolysis hydrogen production modules 2 required to be started currently, the distribution power of each module, and the number of water electrolysis hydrogen production equipment required to be started in each starting module;
(S3) the power supply condition of the power grid in the future Z hours is estimated, the future operation condition of the system is predicted, and the power distribution power is determined;
(S4) according to the temperature of each water electrolysis hydrogen production device in each working module, combining with the prediction of future working conditions, distributing power to each water electrolysis hydrogen production device in each starting module, and ensuring that the water electrolysis hydrogen production devices operate in an ideal region or a working region;
(S5) according to the accumulated working time of each water electrolysis hydrogen production device, the working time of the water electrolysis hydrogen production device is uniformly distributed, and the service life of each individual water electrolysis hydrogen production device is prevented from being consumed too fast;
(S6) intermittently starting each hydrogen production module according to the average service life requirement and the predicted working condition and short-time power distribution power fluctuation, and ensuring that all the modules are in the working temperature range; for longer distribution power fluctuation, after the standby module is cooled, the water electrolysis hydrogen production equipment needing to be started can be preheated in advance through the heat management system, and the response speed of the system is increased.
This embodiment sets up a large-scale electrolytic water hydrogen production system with wide power fluctuation adaptability, and the rated power of system is 100MW, and 5 electrolytic water hydrogen production modules 2 are established to the branch under the system, and the rated power of every module is 20MW, and every module is by 2 rated power for 2MW, 2 rated power for 3MW and 2 rated power for 5MW electrolytic water hydrogen production module component. For the water electrolysis hydrogen production module in each module, the working interval of the 2MW water electrolysis hydrogen production module is 0.8MW-2 MW; the working interval of the 3MW water electrolysis hydrogen production module is 1.2MW-3 MW; the working interval of the 5MW water electrolysis hydrogen production module is 2 MW-5M. The working temperature of each water electrolysis hydrogen production module is 60-95 ℃, when the temperature of the water electrolysis hydrogen production module is lower than 60 ℃, the water electrolysis hydrogen production module cannot work normally, and referring to fig. 6, after the water electrolysis hydrogen production module stops working for 4 hours, the temperature of the water electrolysis hydrogen production module is reduced to below 60 ℃, and the module cannot work normally.
For the single water electrolysis hydrogen production module with the same technical level, if the rated power of the single water electrolysis hydrogen production module is also 100MW, the working interval is 40-100MW, and the power fluctuation adaptive range is 40% -100% of the rated value; and to the utility model provides an electrolytic water hydrogen manufacturing system, its minimum operating power is 1MW, and the power fluctuation accommodation is 0.8% -100% of rated value, can see out the utility model discloses show the power fluctuation adaptability that has improved electrolytic water hydrogen manufacturing system.
Referring to fig. 5, before the time t is 0(h), the power supply power of the power grid to the water electrolysis hydrogen production system is stabilized at 100MW, the water electrolysis hydrogen production system and each hydrogen production module are in the rated working state, referring to fig. 7 to 11, each type of water electrolysis hydrogen production module is in the rated working state, and the temperature is maintained at 90 ℃.
Referring to fig. 5, starting at time t-0 (h), the power supply of the power grid fluctuates, and the distribution power of the system for producing hydrogen by electrolyzing water is reduced to 20MW and is kept for 12 hours. At this time, if a single water electrolysis hydrogen production module with the same technical level is adopted, the water electrolysis hydrogen production module cannot work normally under the input power of 20 MW. To the utility model provides an electrolytic water hydrogen manufacturing system, adjustable each electrolytic water hydrogen manufacturing module intermittent type nature work when making each work electrolytic water hydrogen manufacturing module distribution power all be in the work interval, guarantees that the temperature of each module, module does not drop to below operating temperature, guarantees that the further power supply that can the quick response electric wire netting is undulant.
Referring to fig. 7 to 11, in the water electrolysis hydrogen production system, 10MW of power may be intermittently allocated to each hydrogen production module, the allocated power of the standby hydrogen production module is 0MW, and the cooling module is in an off state. And the hydrogen production modules are subjected to power distribution regulation and control, so that the standby time of each module is not more than 4 hours. Meanwhile, in the work of each module, 2.5MW power is distributed to the 5MW electrolyzed water hydrogen production module in the module, 1.5MW power is distributed to the 3MW electrolyzed water hydrogen production module, and 1MW power is distributed to the 2MW electrolyzed water hydrogen production module.
Referring to table 1 and fig. 7 to 11, when t is 1(h), the hydrogen production modules 1 and 3 are respectively in an operating state, the power is 10MW, and the hydrogen production modules 2, 4 and 5 are in a standby state; when t is 2(h), keeping 1 and 4 hydrogen production modules in a working state, and keeping 2, 3 and 5 hydrogen production modules in a standby state; when t is 3(h), the hydrogen production modules 1, 3 and 4 are in a standby state, and the hydrogen production modules 2 and 5 are adjusted to be in a working state; when t is 4(h), adjusting the hydrogen production modules 2 and 3 to 10MW, and adjusting the hydrogen production modules 1, 4 and 5 to a standby state; when t is 5(h), the hydrogen production modules 1, 2 and 3 are in a standby state, the hydrogen production modules 4 and 5 are in a working state, and the power is 10 MW; when t is 6(h), the hydrogen production modules 1 and 2 are adjusted to be in a working state, and the hydrogen production modules 3, 4 and 5 enter a standby state; when t is 7(h), the 1 and 3 hydrogen production modules are in a 10MW working state, and the 2, 4 and 5 hydrogen production modules are in a standby state; when t is 8(h), 2, 4 and 5 hydrogen production modules are in a working state, and 1, 3 and 5 hydrogen production modules are in a standby state; when t is 9(h), the hydrogen production modules 1, 2 and 4 are in a standby state, and the hydrogen production modules 3 and 5 are in a working state; when t is 10(h), the input power of the 2, 4 hydrogen production modules is 10MWW, and the 1, 3, 5 hydrogen production modules are in a standby state; when t is 11(h), the hydrogen production modules 1 and 3 are in a working state, and the hydrogen production modules 2, 4 and 5 are in a standby state; when t is 12(h), the hydrogen production modules 1 and 2 are in an operating state, and the hydrogen production modules 3, 4 and 5 are in a standby state.
When t 13(h), the electric wire netting distribution resumes to 100MW, and the hydrogen manufacturing module that electrolytic water hydrogen manufacturing system started because can adjust in a flexible way, the temperature of each hydrogen manufacturing module all is in operating temperature in each module, and the distribution that can quick corresponding electric wire netting increases, can work to rated state rapidly.
TABLE 1 Power distribution Power fluctuation of the grid and Power distribution of the Water-Electrolysis Hydrogen production modules
Through above-mentioned adjustment, can make the hydrogen manufacturing system of brineelectrolysis can be at very wide within range response power fluctuation, guarantee each hydrogen manufacturing module work of brineelectrolysis simultaneously and promote whole efficiency in the ideal work interval, it is visible the utility model discloses a large-scale hydrogen manufacturing system of brineelectrolysis adaptability can effectively improve the response speed and the overall work efficiency of hydrogen manufacturing system of brineelectrolysis.
The above embodiments are merely examples and do not limit the scope of the present invention. These embodiments may be implemented in other various manners, and various omissions, substitutions, and changes may be made without departing from the technical spirit of the present invention.
Claims (8)
1. A large scale water electrolysis hydrogen production system with wide power fluctuation adaptability is characterized in that the system comprises:
electrolytic water hydrogen production module (2): a plurality of the sensors are arranged to form a parallel form;
system power split controller (1): is configured to be used for power distribution and control of the water electrolysis hydrogen production module (2) in the water electrolysis hydrogen production system;
each water electrolysis hydrogen production module (2) comprises a plurality of water electrolysis hydrogen production modules (35) with different power levels and a module power distribution controller (4), the module power distribution controller (4) is configured to be used for power distribution control of the water electrolysis hydrogen production modules (35) in the module, the module power distribution controller (4) is connected to the system power distribution controller (1), and the water electrolysis hydrogen production modules (35) in each water electrolysis hydrogen production module (2) share a module manager (3) for temperature, alkali liquor circulation and gas-liquid separation control and a hydrogen purification assembly (7) for hydrogen purification.
2. The large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability according to claim 1, characterized in that the water electrolysis hydrogen production modules (35) with different power levels in the water electrolysis hydrogen production module (2) are respectively provided with a plurality of electrolytic tanks which are operated independently, and the electrolytic tanks are connected to the module manager (3) and the hydrogen purification assembly (7) shared in the water electrolysis hydrogen production module (2).
3. The large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability according to claim 1, characterized in that the module manager (3) comprises a rectifier transformer (36), an oxygen side gas diaphragm valve (31), an oxygen side gas-liquid separator (33), a hydrogen side gas diaphragm valve (32), a hydrogen side gas-liquid separator (34), an alkali liquid tank (38), an alkali supplement pump (39), an alkali liquid filter (310) and an alkali supplement branch, each water electrolysis hydrogen production module (35) in the same water electrolysis hydrogen production module (2) is respectively connected to the module power split controller (4) through one rectifier transformer (36), oxygen output ports of each water electrolysis hydrogen production module (35) are mutually communicated and connected to the oxygen side gas-liquid separator (33), and a gas output port of the oxygen side gas-liquid separator (33) discharges oxygen through the oxygen side gas diaphragm valve (31), the hydrogen outlets of the electrolyzed water hydrogen production modules (35) are communicated with each other and connected to a hydrogen side gas-liquid separator (34), the gas outlet of the hydrogen side gas-liquid separator (34) is connected to a hydrogen purification component (7) through a hydrogen side gas diaphragm valve (32), the alkali liquor outlets of the oxygen side gas-liquid separator (33) and the hydrogen side gas-liquid separator (34) are communicated to an alkali liquor filter (310), the input end of the alkali liquor filter (310) is also connected with the alkali liquor tank (38) through an alkali supplementing pump (39), and the alkali liquor inlets of the electrolyzed water hydrogen production modules (35) are respectively connected with the output end of the alkali liquor filter (310) through an alkali supplementing branch.
4. The large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability according to claim 3, wherein the alkali supplement branch comprises an alkali liquor circulating pump (311) and an alkali liquor cooler (37) which are connected in series, the input end of the alkali liquor circulating pump (311) is connected with the output end of the alkali liquor filter (310), and the output end of the alkali liquor cooler (37) is connected with the alkali liquor inlet of the corresponding water electrolysis hydrogen production module (35).
5. The large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability according to claim 1, characterized in that the gas output ends of the hydrogen purification components (7) of all the water electrolysis hydrogen production modules (2) of the system are communicated to form a hydrogen output port of the system.
6. A large scale electrolytic water hydrogen production system with wide power fluctuation adaptability according to claim 5, characterized in that the communication between the hydrogen output ports of the hydrogen purification component (7) is in the form of: bus, star, ring, tree, and mesh.
7. A large scale water electrolysis hydrogen production system with wide power fluctuation adaptability according to claim 1, characterized in that the system power-split controller (1) comprises a microprocessor chip.
8. The large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability according to claim 1, wherein the module power division controller (4) comprises a microprocessor chip.
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| CN111826669A (en) * | 2020-03-31 | 2020-10-27 | 同济大学 | Large-scale water electrolysis hydrogen production system with wide power fluctuation adaptability and control method |
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