CN216171377U

CN216171377U - One-use one-standby dry desulfurization grinding direct injection system

Info

Publication number: CN216171377U
Application number: CN202122716691.3U
Authority: CN
Inventors: 许亮; 韩文杰; 张金友; 曹瑞光; 季凤翔
Original assignee: Weifang Perman Powder Equipment Co ltd
Current assignee: Weifang Perman Powder Equipment Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-05
Anticipated expiration: 2031-11-08

Abstract

The utility model provides an one is used one and is equipped with dry process desulfurization and grind direct injection system, relates to grinding device technical field, including former feed bin, former feed bin bottom is provided with the discharge gate, is connected with first screw conveyer on the discharge gate, and first screw conveyer's import setting is at first screw conveyer's middle part, and first screw conveyer is provided with two exports, and two exports are located first screw conveyer's both ends respectively, connect a grinding device respectively in every export. According to the utility model, the spiral conveyor is arranged, the outlets are respectively arranged at the two ends of the spiral conveyor, the grinding equipment in the access system is switched at will through the forward rotation and the reverse rotation of the spiral conveyor by respectively arranging the grinding equipment on the outlets, and the equipment does not need to be stopped, so that the working efficiency is improved.

Description

One-use one-standby dry desulfurization grinding direct injection system

Technical Field

The utility model relates to the technical field of grinding equipment, in particular to an one-use one-standby dry desulphurization grinding direct injection system.

Background

With the stricter requirements of environmental protection regulations, sodium bicarbonate is used as an adsorbent, various pollutants contained in the flue gas are removed by dry adsorption, and the purification effect of the flue gas is remarkable compared with that of other known modes. If the spray adsorption method using lime milk as adsorbent is adopted, the dry method flue gas purification not only can be used for treating hazardous waste, a steel mill coke oven, thermal power generation, municipal refuse or alternative fuel incineration plant, but also can be widely used in industries such as non-metal ore, ceramic industry, glass manufacturing industry and the like. The dry method for purifying the flue gas can effectively remove the gas containing acidic substances, such as SO₂HCl and the like, and reaches the national standard of flue gas emission. The flue gas contains a large amount of acid gas, and through a large amount of data and experiments, the flue gas can react with acid components in the flue gas with the maximum efficiency only if the sodium bicarbonate is small to a certain degree. It removes acidic pollutant in the smoke through chemical adsorption, and simultaneously, it can also remove some inorganic and organic trace substances through physical adsorption.

At present, sodium bicarbonate grinds and generally adopts the grinding machine, and the grinding machine uses for a long time and need to overhaul and change the accessory, so need shut down, this is the follow-up work flow of serious influence, chinese patent CN 211886232U discloses a sodium-based dry desulfurization system who is applied to low sulfur flue gas operating mode, this system, high-efficient desulfurizer injection system, a grinding system is disclosed, adopt two grinding machines, one is used and is equipped with, through connecting two spiral weighing batchers on the discharge gate of sodium bicarbonate storage bin in parallel respectively, then set up a grinding machine on every spiral weighing batcher respectively, through the alternative use of two grinding machines, thereby reduced down time, improved work efficiency. However, when two grinding machines are switched, the switching is complex, the equipment investment is large, and the occupied area is large.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects, the utility model aims to provide an one-use one-standby dry desulphurization grinding direct injection system which has small equipment investment, can realize the quick switching of a grinding machine and greatly improves the working efficiency.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a one is used one and is equipped with dry process desulfurization and grind direct injection system, includes former feed bin, former feed bin bottom is provided with the discharge gate, be connected with first screw conveyer on the discharge gate, first screw conveyer's import setting is in first screw conveyer's middle part, first screw conveyer is provided with two exports, and two exports are located respectively first screw conveyer's both ends, every connect a grinding device in the export respectively.

Wherein, the grinding equipment comprises a second screw conveyer, a grinder and a grader which are connected in sequence.

The feeding hole of the second spiral conveyor is provided with a hopper, the hopper is connected with the outlet, and the bottom of the hopper is provided with a rotary material guide device.

The automatic grading machine is characterized in that a fan is connected to a discharge port of the grading machine, a material spraying pipe is arranged on an outlet of the fan, a sampling port is reserved on the material spraying pipe, and a sampling pipe is installed on the sampling port.

And the rotary material guide device is in transmission connection with a driving device of the second spiral conveyor.

Wherein, the grinding machine is provided with a dosing port which is connected with a metering pump.

Wherein, a gate valve is arranged on the discharge hole.

Wherein a silencer is mounted on the grinder.

Wherein, the first screw conveyer is connected with the hopper through a corrugated pipe.

Wherein the second screw conveyor is connected with the grinding mill through a corrugated pipe.

After the technical scheme is adopted, the utility model has the beneficial effects that:

the dry desulfurization and grinding direct injection system comprises a raw material bin, wherein a discharge port is formed in the bottom of the raw material bin, a first spiral conveyor is connected onto the discharge port, an inlet of the first spiral conveyor is formed in the middle of the first spiral conveyor, the first spiral conveyor is provided with two outlets, the two outlets are respectively located at two ends of the first spiral conveyor, and each outlet is respectively connected with a grinding device. According to the utility model, the spiral conveyor is arranged, the outlets are respectively arranged at the two ends of the spiral conveyor, the grinding equipment in the access system is switched at will through the forward rotation and the reverse rotation of the spiral conveyor by respectively arranging the grinding equipment on the outlets, and the equipment does not need to be stopped, so that the working efficiency is improved.

Through being provided with rotatory guide device in the hopper bottom to prevent that the hopper from blockking up, can realize moreover that the raw materials ration is orderly leading-in to second screw conveyer, be connected through the drive arrangement transmission with rotatory guide device and second screw conveyer, thereby realize the synchronous operation, thereby can improve second screw conveyer's measurement accuracy.

Have the sample connection through reserving on spouting the material pipe, install the sampling tube on the sample connection to can regularly sample, carry out the granularity detection to sodium bicarbonate, thereby guarantee to grind the precision.

The grinding machine is provided with a dosing port which is connected with a metering pump, propylene glycol is added into the dosing port through the metering pump, sodium bicarbonate can be slowly decomposed at the temperature of more than 30 ℃ to generate sodium carbonate, water and carbon dioxide, the sodium bicarbonate can be rapidly decomposed at the temperature of more than 65 ℃ to generate multi-branch aggregated intermediate products, water molecules generated by decomposition can possibly form hydrogen bonds with oxygen atoms in bicarbonate radicals, and the factor is easy to generate caking. Propylene glycol, which is a synthetic liquid substance absorbing moisture, is added into the grinder, and the propylene glycol is mixed into the grinder to sufficiently absorb the decomposed moisture and prevent the caking phenomenon.

Through being connected through the bellows between first screw conveyer and the hopper, be connected through the bellows between second screw conveyer and the machine of grinding to prevent to grind process equipment vibration, cause the influence to other equipment, influence equipment life and pipeline leakproofness.

In conclusion, the dry desulfurization and grinding direct injection system with one use and one backup solves the technical problem that a grinding machine needs to be shut down and overhauled in the prior art, the equipment investment is low, the quick switching of the grinding machine can be realized, and the working efficiency is greatly improved.

Drawings

FIG. 1 is a schematic diagram of a one-use-one-backup dry desulfurization grinding direct injection system according to the present invention;

FIG. 2 is a side view of FIG. 1;

in the figure: 1. raw material bin, 11, raw material inlet, 12, discharge port, 13, oscillator, 14, gate valve, 2, electric block, 3, first screw conveyer, 31, inlet, 32, outlet, 4, grinding equipment, 41, second screw conveyer, 411, hopper, 42, grinding machine, 421, muffler, 43, grader, 44, rotatory guide device, 441, rotation axis, 442, blade, 5, fan, 51, spraying pipe, 521, sampling pipe, 6, metering pump.

Detailed Description

The utility model is further illustrated below with reference to the figures and examples.

All the orientations referred to in the present specification are based on the orientations shown in the drawings, and only represent relative positional relationships, not absolute positional relationships.

As shown in fig. 1 and fig. 2, the one-use one-standby dry desulfurization and grinding direct injection system comprises a raw material bin 1, wherein a raw material inlet 11 is formed in the raw material bin 1, an electric hoist 2 is arranged at the top of the raw material inlet 11, the electric hoist 2 is used for hoisting a ton bag, and a sodium bicarbonate raw material is filled in the ton bag. Former feed bin 1 bottom is the toper end, and the bottom is provided with discharge gate 12, is provided with oscillator 13 on the former feed bin 1 lateral wall of discharge gate 12 top for supplementary raw materials unloading prevents to block up. The discharge port 12 is provided with a gate valve 14. The bottom of the discharge port 12 is connected with a first screw conveyer 3, an inlet 31 of the first screw conveyer 3 is positioned in the middle of the first screw conveyer 3, the inlet 31 is fixedly connected with the discharge port 12, the first screw conveyer 3 is provided with two outlets 32, the two outlets 32 are respectively positioned at two ends of the first screw conveyer 3, and each outlet 32 is connected with a grinding device 4. The grinding apparatus 4 includes a second screw conveyor 41, a grinder 42, and a classifier 43 connected in this order. A hopper 411 is arranged on the feed inlet of the second screw conveyor 41, the hopper 411 is connected with the outlet 32, and the hopper 411 is connected with the outlet 32 of the first screw conveyor 3 through a corrugated pipe. The bottom of the hopper 411 is provided with a rotary material guiding device 44. The rotary material guide device 44 guides materials through rotation, so that blockage of the hopper is prevented, and raw materials can enter the second spiral conveyor 41 orderly. The rotary material guiding device 44 comprises a rotary shaft 441 rotatably mounted at the bottom of the hopper 411, blades 442 are fixedly arranged on the rotary shaft 441, a mechanical seal is arranged between the rotary shaft 441 and the hopper 411, a belt pulley is fixed at one end of the rotary shaft 441, which extends out of the hopper 411, a driving device of the second spiral conveyor 41 is in transmission connection with the rotary material guiding device 44, the transmission mode adopts belt transmission connection and is in transmission connection with the belt pulley through a belt, so that the synchronous operation of the second spiral conveyor 41 and the rotary material guiding device 44 is ensured, and the quantitative feeding purpose is realized.

The outlet of the second screw conveyor 41 is connected with a grinder 42 through a pipeline, the pipeline adopts a corrugated pipe, and the corrugated pipe is arranged, so that upstream equipment is prevented from shaking caused by grinding vibration of the grinder 42, and the sealing performance of the equipment is damaged. The grinder 42 is a negative pressure air grinder with a variable frequency speed regulating function, a grader 43 is installed at the upper part of the grinder, and the grader 43 replaces a traditional screen to regulate the fineness, so that the application range of the equipment is enlarged. The discharge port of the classifier 43 is connected with a fan 5, and the outlet of the fan 5 is provided with a material spraying pipe 51. The powder from the classifier 43 is sprayed into the flue gas pipeline from the spray pipe 51 by the fan 5 under the action of the fan 5.

A sampling opening is reserved on the spray pipe 51, a sampling pipe 521 is installed on the sampling opening, a valve is arranged on the sampling pipe 521, and the powder sodium bicarbonate in the spray pipe 51 is sampled at regular time by opening the valve so as to ensure that the sodium bicarbonate powder is qualified in grinding.

As shown in fig. 2, the grinder 42 is provided with a dosing port (not shown) to which the metering pump 6 is connected. The metering pump 6 is placed in the PVC barrel, the propylene glycol is stored in the PVC barrel, and the propylene glycol is added into the grinding machine 42 through the metering pump 6, so that the caking phenomenon of the sodium bicarbonate is prevented. A silencer 421 is further installed at the feed opening of the grinder 42 so that grinding noise can be reduced.

As shown in fig. 1 and fig. 2, the working flow of the one-use one-standby dry desulfurization grinding direct injection system of the present invention is as follows:

during operation, the frequency of the grinding machine 42 is adjusted according to the specification and the particle size of the actually required sodium bicarbonate, the electric hoist 2 hoists a ton bag to the raw material inlet 11, the ton bag is opened by a manual bag opening or a clamping device, the sodium bicarbonate raw material falls into the bottom of the raw material bin 1, then the sodium bicarbonate raw material enters one group of grinding equipment 4 through the first screw conveyor 3, sodium bicarbonate particles are crushed, and the crushed powder sodium bicarbonate is sprayed into a flue gas pipeline under the action of the fan 5.

The one-use one-standby dry desulphurization grinding direct injection system has small equipment investment, can realize the quick switching of the grinding machine and greatly improves the working efficiency.

The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.

Claims

1. The utility model provides an one is used one and is equipped with dry process desulfurization and grind direct injection system, includes former feed bin, its characterized in that, former feed bin bottom is provided with the discharge gate, be connected with first screw conveyer on the discharge gate, first screw conveyer's import sets up first screw conveyer's middle part, first screw conveyer is provided with two exports, and two exports are located respectively first screw conveyer's both ends, every connect a grinding device in the export respectively.

2. The one-use-one-standby dry desulfurization grinding direct injection system according to claim 1, wherein the grinding device comprises a second screw conveyor, a grinding machine and a classifier which are connected in sequence.

3. The one-use one-standby dry desulphurization grinding direct injection system according to claim 2, wherein a hopper is arranged on the feed inlet of the second screw conveyer, the hopper is connected with the outlet, and a rotary material guiding device is arranged at the bottom of the hopper.

4. The one-use one-standby dry desulphurization grinding direct injection system according to claim 2, wherein a fan is connected to the discharge port of the classifier, a material injection pipe is arranged on the outlet of the fan, a sampling port is reserved on the material injection pipe, and a sampling pipe is arranged on the sampling port.

5. The dry-standby desulfurization grinding direct injection system according to claim 3, wherein the rotary material guiding device is in transmission connection with the driving device of the second screw conveyor.

6. The one-use one-standby dry desulphurization grinding direct injection system according to claim 2, wherein the grinding machine is provided with a dosing port, and the dosing port is connected with a metering pump.

7. The one-use one-standby dry desulfurization grinding direct injection system according to claim 2, wherein the discharge port is provided with a gate valve.

8. The one-use-one-standby dry desulfurization grinding direct injection system according to claim 2, wherein the grinding machine is provided with a silencer.

9. The one-use-one-standby dry desulphurization grinding direct injection system according to claim 3, wherein the first screw conveyor is connected with the hopper through a bellows.

10. The one-use-one-standby dry desulphurization direct injection system according to claim 2, wherein the second screw conveyer is connected with the grinding machine through a bellows.