Improved device for gasified black water additive
By setting up flocculant and dispersant tanks in the gasification black water treatment system and using a static mixer and metering pump to precisely control the addition of chemicals, the problems of suspended solids and scaling ion deposition in black water are solved, achieving stable equipment operation and chemical savings.
Patent Information
- Application Number
- CN202520026393.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-07
AI Technical Summary
In the new coal gasification process for producing synthetic ammonia, the deposition of suspended solids and scaling ions in black water in equipment and pipelines leads to scaling, which is difficult to solve effectively with existing technologies, affecting the stable operation of the system and increasing reagent consumption.
A device for improving gasification black water additives is designed. By setting flocculant tanks and dispersant tanks in the settling tank and ash water tank respectively, and using a static mixer and metering pump to precisely control the addition of the agents, the effective removal of suspended solids and scaling ions can be achieved.
It effectively prevents scaling on equipment and pipelines, ensures long-term stable operation of the system, saves on chemical usage costs, and requires no additional equipment, resulting in low investment costs.
Smart Images
Figure CN223705426U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to novel coal gasification technical field, and specifically provide a kind of gasification black water additive improved device. BACKGROUND
[0002] In the process of preparing synthetic ammonia by novel coal gasification, coal and oxygen are reacted in the combustion chamber of gasifier to generate CO and H2 as the main crude synthetic gas, and the non-combustible ash in coal and part of the carbon particles that are not completely reacted form ash slag. In the process of quenching and cooling the crude synthetic gas and washing the crude synthetic gas, the ash slag mixed in the crude synthetic gas enters the quenching water and washing water to form black water. To save energy, the ash slag and other suspended solids mixed in the black water are flocculated and precipitated, and then the dissolved oxygen and other gases in the water removed by oxygen remover are returned to the system as quenching water and flushing water for recycling.
[0003] In the traditional process, the commonly used treatment process for black water is to add flocculants to the inlet pipe of the settling tank to remove most of the suspended solids in the water, and to add dispersants to the inlet pipe of the ash water tank to prevent scale-forming ions from scaling inside the equipment. However, if only the two traditional fixed dosing points are dosed, the dispersant will be continuously consumed during the transportation of ash water, and the pipes and equipment behind the ash water tank are also prone to scaling. SUMMARY
[0004] The utility model provides a kind of gasification black water additive improved device that design is reasonable, simple structure, safe in use, low in investment cost, to solve the technical problems of the above prior art.
[0005] The utility model solves the technical problems by adopting the following technical solutions:
[0006] A kind of gasification black water additive improved device, including settling tank and ash water tank, the inlet end of the settling tank is connected with settling tank inlet pipe, the settling tank inlet pipe is connected with static buffer mixer, the static mixer is connected with black water inlet pipe in one way, another way is connected with flocculant tank, the flocculant tank contains flocculant;
[0007] The settling tank is connected with ash water tank by ash water tank inlet pipe, the ash water tank is connected with oxygen remover by oxygen remover inlet pipe, the oxygen remover is connected with oxygen removal pump by oxygen removal pump inlet pipe, the outlet end of the oxygen removal pump is connected with oxygen removal pump outlet pipe, and the oxygen removal pump outlet pipe returns to gasification system as gasification quenching water and flushing water for recycling;
[0008] The ash water tank inlet pipe, oxygen remover inlet pipe and oxygen removal pump outlet pipe are jointly connected with dispersant tank, and the dispersant tank contains dispersant.
[0009] Further, the flocculant tank is connected with a flocculant feeding pipe at the inlet end and connected with a flocculant outlet pipe at the outlet end, the flocculant outlet pipe is connected with a flocculant pump, and the flocculant pump is connected with a static mixer through a flocculant pump outlet pipe.
[0010] Further, the outlet end of the grey water tank is connected with a grey water pump inlet pipe, the grey water pump inlet pipe is connected with a grey water pump, and the outlet end of the grey water pump is connected with a deaerator inlet pipe.
[0011] Further, the dispersant tank is connected with a dispersant feeding pipe at the inlet end and connected with a dispersant inlet pipe at the outlet end, the dispersant inlet pipe is connected with a dispersant pump, the dispersant pump is connected with a dispersant pump outlet pipe, one branch of the dispersant pump outlet pipe is connected with a grey water tank dispersant adding pipe, and the grey water tank dispersant adding pipe is connected with a grey water tank water inlet pipe.
[0012] The second branch of the dispersant pump outlet pipe is connected with a deaerator dispersant adding pipe, and the deaerator dispersant adding pipe is connected with the deaerator inlet pipe.
[0013] The third branch of the dispersant pump outlet pipe is connected with a deaerator dispersant adding pipe, and the deaerator dispersant adding pipe is connected with a deaerator water pump outlet pipe.
[0014] Further, the grey water tank dispersant adding pipe is provided with a valve I, the deaerator dispersant adding pipe is provided with a valve II, and the deaerator water dispersant adding pipe is provided with a valve III.
[0015] Preferably, the flocculant pump and the dispersant pump are metering pumps.
[0016] Compared with the prior art, the improved device for adding gasification black water additives has the following outstanding advantages:
[0017] The flocculant tank and the static mixer can effectively remove the suspended solids in the black water and the fouling ions in the grey water, avoid the occurrence of structural phenomena such as equipment and pipelines in the grey water recycling, and ensure long-period and stable operation of the device.
[0018] The dispersant tank is provided to precisely control the addition amount of each medicament at three branches, to ensure the stability of the system and save the medicament use cost. ACCURATE DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.
[0020] Figure Figure 1 is a structural schematic diagram of a gasification black water additive improvement device.
[0021] The marks in the drawings represent respectively:
[0022] 1, flocculant tank, 2, flocculant pump, 3, static mixer, 4, settling tank, 5, grey water tank, 6, grey water pump, 7, deaerator, 8, deaerated water pump, 9, dispersant tank, 10, dispersant pump, 11, flocculant feeding pipe, 12, flocculant outlet pipe, 13, flocculant pump outlet pipe, 14. black water inlet pipe 15. settling tank inlet pipe 16. grey water tank inlet pipe 17. grey water pump inlet pipe 18. deaerator inlet pipe 19. deaerated water pump inlet pipe 20. deaerated water pump outlet pipe 21. dispersant feeding pipe 22. dispersant pump inlet pipe 23. dispersant pump outlet pipe 24. grey water tank dispersant addition pipe 25. deaerated water dispersant addition pipe 26. deaerator dispersant addition pipe 27. valve I 28. valve II 29. valve III. DETAILED DESCRIPTION
[0023] The utility model will be further described below in combination with the drawings and specific embodiments, but not as the limitation of the utility model.
[0024] In the utility model, if there is no contrary description, the orientation words such as "up, down, left, right" usually refer to the up, down, left, right shown in the drawings; "inner, outer" refers to the inner, outer relative to the contour of each component itself.
[0025] The following gives an optimal embodiment:
[0026] As Figure 1 shown, the gasification black water additive improvement device in the embodiment includes a settling tank 4 and a grey water tank 5, the inlet end of the settling tank 4 is connected with a settling tank inlet pipe 15, the settling tank inlet pipe 15 is connected with a static buffer mixer 3, the static buffer mixer 3 is connected with a black water inlet pipe 14 in one way, and is connected with a flocculant tank 1 in another way, the flocculant tank 1 contains flocculants.
[0027] The settling tank 4 is connected with the grey water tank 5 through a grey water tank inlet pipe 16, the grey water tank 5 is connected with a deaerator 7 through a deaerator inlet pipe 18, the deaerator 7 is connected with a deaerated water pump 8 through a deaerated water pump inlet pipe 19, the outlet end of the deaerated water pump 8 is connected with a deaerated water pump outlet pipe 20, and the deaerated water pump outlet pipe 20 returns to the gasification system and is used circularly as gasification quenching water and flushing water.
[0028] The grey water tank inlet pipe 16, the deaerator inlet pipe 18 and the deaerated water pump outlet pipe 20 are jointly connected with a dispersant tank 9, and the dispersant tank 9 contains dispersants.
[0029] The black water is settled and separated in the settling tank 4 by gravity, and the clear water in the upper part of the settling tank 4 overflows and is transported to the ash water tank 5 through the ash water tank inlet pipe 16 after the suspended solids in the black water are removed.
[0030] The flocculant tank 1 is connected with a flocculant feeding pipe 11 at the inlet end and a flocculant outlet pipe 12 at the outlet end, the flocculant outlet pipe 12 is connected with the flocculant pump 2, and the flocculant pump 2 is connected with the static mixer 3 through a flocculant pump outlet pipe 13.
[0031] The flocculant is transported to the flocculant pump 2 through the flocculant outlet pipe 12, is pressurized, and is then transported to the static mixer 3 through the flocculant pump outlet pipe 13.
[0032] The outlet end of the ash water tank 5 is connected with an ash water pump inlet pipe 17, the ash water pump inlet pipe 17 is connected with the ash water pump 6, and the outlet end of the ash water pump 6 is connected with a deaerator inlet pipe 18.
[0033] The black water becomes ash water after the suspended solids are removed by flocculation and sedimentation, is transported to the ash water tank 5 through the ash water tank inlet pipe 16, is stored in the ash water tank 5, is then transported to the ash water pump 6 through the ash water pump inlet pipe 17, is pressurized and metered, and is then transported to the deaerator 7 through the deaerator inlet pipe 18.
[0034] The dissolved oxygen and other gases in the ash water during the circulation are removed in the deaerator 7 by using the principle of thermal deaeration, so as to avoid the corrosion of oxygen atoms in the ash water to the equipment and pipelines. Then, the deaerated water is transported to the deaerated water pump 8 through a deaerated water pump inlet pipe 19, is pressurized, and is then returned to the gasification system through a deaerated water pump outlet pipe 20 to be used as gasification quenching water and flushing water.
[0035] The dispersant tank 9 is connected with a dispersant feeding pipe 21 at the inlet end and a dispersant inlet pipe 22 at the outlet end, the dispersant inlet pipe 22 is connected with the dispersant pump 10, and the dispersant pump 10 is connected with a dispersant pump outlet pipe 23.
[0036] The dispersant is transported to the dispersant pump 10 through the dispersant pump inlet pipe 22, is pressurized, and is then transported to the dispersant addition points through the dispersant pump outlet pipe 23.
[0037] One branch of the dispersant pump outlet pipe 23 is connected with an ash water tank dispersant addition pipe 24, and the ash water tank dispersant addition pipe 24 is connected with the ash water tank inlet pipe 16;
[0038] The second branch of the dispersant pump outlet pipe 23 is connected with a deaerator dispersant addition pipe 26, and the deaerator dispersant addition pipe 26 is connected with the deaerator inlet pipe 18;
[0039] The third branch of the dispersing pump outlet pipe 23 is connected with the deaerator dispersant adding pipe 25, and the deaerator dispersant adding pipe 26 is connected with the deaerator water pump outlet pipe 20.
[0040] The dispersant can be delivered to different dispersant dosing points through the three-way pipe, which effectively prevents the scaling ions in the grey water from scaling in the equipment and pipe.
[0041] The valve I 27 is arranged on the grey water tank dispersant adding pipe 24, the valve II 28 is arranged on the deaerator dispersant adding pipe 25, and the valve III 29 is arranged on the deaerator dispersant adding pipe 26. The addition amount of the dispersant is adjusted according to the scaling conditions of different pipes and equipment in the system.
[0042] The flocculant pump 2 in the embodiment is a metering pump, which accurately controls the addition amount of the flocculant; and the dispersant pump 10 is also a metering pump, which accurately controls the addition amount of the dispersant.
[0043] The flocculant in the embodiment is purchased, then delivered to the flocculant tank 1 through the flocculant feeding pipe 11, dissolved to the required concentration in the flocculant tank 1, stored in the flocculant tank 1, and then delivered to the flocculant pump 2 through the flocculant outlet pipe 12 for pressure boosting and metering.
[0044] The flocculant is delivered to the static mixer 3 through the flocculant pump outlet pipe 13, and the gasified black water is delivered to the static mixer 3 through the black water inlet pipe 14. After the flocculant and the black water are fully mixed in the static mixer 3, they are delivered to the settling tank 4 through the settling tank inlet pipe 15.
[0045] The dispersant is purchased, then delivered to the dispersant tank 8 through the dispersant feeding pipe 21, dissolved to the required concentration in the dispersant tank 8, stored in the dispersant tank 8, and then delivered to the dispersant pump 10 through the dispersant pump inlet pipe 22 for pressure boosting and metering.
[0046] The dispersant is delivered to the dispersant pump 10 through the dispersant pump inlet pipe 22 for pressure boosting, and then delivered to the dispersant dosing points through the dispersant pump outlet pipe 23.
[0047] The addition amount of the dispersant is adjusted according to the scaling conditions of different pipes and equipment in the system. If the scaling of the settling tank 4, the grey water tank 5, the equipment body and the pipe between the equipment has a tendency to aggravate, it means that the addition amount of the grey water tank inlet dosing point needs to be increased, at this time, the valve I 27 is opened, and the dispersant is added to the grey water tank 5 through the grey water tank dispersant adding pipe 24.
[0048] If the equipment and pipeline before the ash water tank 5 is not obviously scaled, but the deaerator 7 and the pipeline after the deaerator is seriously scaled, it is indicated that the amount of the adding agent at the deaerator inlet needs to be increased, at this time, the valve I 27 is closed and the valve III 29 is opened, so that the dispersing agent is added into the deaerator 7 through the deaerator dispersing agent adding pipe 26; if the pipeline and equipment structure after the deaerator 7 is seriously used by the ash water, it is indicated that the amount of the dispersing agent in the ash water after the deaerator 7 is insufficient, at this time, the valve II 28 is opened, and the dispersing agent is added into the ash water after the deaerator 7 for recycling through the deaerated water dispersing agent adding pipe 25.
[0049] The above-described embodiments are only one of the preferred specific embodiments of the present application, and the usual changes and replacements made by those skilled in the art within the technical scheme of the present application should be included in the protection scope of the present application.
Claims
1. A gasification black water additive improvement apparatus comprising a settling tank and a grey water tank, characterized by, The inlet end of the settling tank is connected with a settling tank water inlet pipe, the settling tank water inlet pipe is connected with a static mixer, the static mixer is connected with a black water inlet pipe in one way and a flocculant tank in another way, and the flocculant tank contains flocculants; The settling tank is connected with a grey water tank through a grey water tank water inlet pipe, the grey water tank is connected with a deaerator through a deaerator inlet pipe, the deaerator is connected with a deaerator pump through a deaerator pump inlet pipe, the outlet end of the deaerator pump is connected with a deaerator pump outlet pipe, and the deaerator pump outlet pipe is returned to the gasification system as gasification quenching water and flushing water for circulation. The grey water tank water inlet pipe, the deaerator inlet pipe and the deaerator pump outlet pipe are jointly connected with a dispersant tank, and the dispersant tank contains dispersants.
2. An improved apparatus for gasification of black water additive according to claim 1, wherein, The inlet end of the flocculant tank is connected with a flocculant feeding pipe, the outlet end is connected with a flocculant outlet pipe, the flocculant outlet pipe is connected with a flocculant pump, and the flocculant pump is connected with the static mixer through a flocculant pump outlet pipe.
3. An improved apparatus for gasification of black water additive according to claim 2, wherein, The outlet end of the grey water tank is connected with a grey water pump inlet pipe, the grey water pump inlet pipe is connected with a grey water pump, and the outlet end of the grey water pump is connected with the deaerator inlet pipe.
4. An improved apparatus for gasification of black water additive according to claim 3, wherein, The inlet end of the dispersant tank is connected with a dispersant feeding pipe, the outlet end is connected with a dispersant inlet pipe, the dispersant inlet pipe is connected with a dispersant pump, the dispersant pump is connected with a dispersant pump outlet pipe, the dispersant pump outlet pipe is connected with a grey water tank dispersant adding pipe in one way and is connected with the grey water tank water inlet pipe through the grey water tank dispersant adding pipe; The dispersant pump outlet pipe is connected with a deaerator dispersant adding pipe in the second way and is connected with the deaerator inlet pipe through the deaerator dispersant adding pipe; The dispersant pump outlet pipe is connected with a deaerator dispersant adding pipe in the third way and is connected with the deaerator water pump outlet pipe through the deaerator water dispersant adding pipe.
5. A gasification black water additive improvement device according to claim 4, characterized in that, Valve I is arranged on the grey water tank dispersant adding pipe, valve II is arranged on the deaerator dispersant adding pipe, and valve III is arranged on the deaerator water dispersant adding pipe.
6. An improved apparatus for gasification of black water additive according to claim 5, wherein, The flocculant pump and the dispersant pump are selected from metering pumps.